weixin_44048054

mkfs.xfs: cannot open /dev/sdb1: Device or resource busy 设备或资源忙

今天在centos下用xfs格式化磁盘出现如下错误

时出现：

重启服务器后再格式化也一样，也就是重启服务器没什么用。

用lsof查看是谁在占用，也没什么效果。

解决方法：

dmsetup ls

dmsetup ls
datavg1-data1 (253:0)

然后我们移除这个占用

dmsetup remove datavg1-data1

再次dmsetup ls
No devices found 已经显示没有绑定的设备了

然后就可以开始格式化了

mkfs.xfs -f /dev/sdb1

分析原因：

之前的硬盘是我们在安装系统的时候分区并挂载的

根据官方解释，dmsetup是 low level logical volume management 。我理解的意思是，这是一个更加底层的逻辑卷管理工具

dmsetup常用命令参数：

显示当前devicemapper 的信息

demsetup ls #列出所有逻辑设备

demsetup status # 列出所有逻辑设备的状态信息

desetup remove # 移除逻辑设备

显示设备依赖关系

dmsetup deps

[root@node103 ~]# fdisk -l
Disk /dev/sdd: 278.9 GiB, 299439751168 bytes, 584843264 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xe6ac2d12

Device     Boot   Start       End   Sectors   Size Id Type
/dev/sdd1  *       2048   2099199   2097152     1G 83 Linux
/dev/sdd2       2099200 584843263 582744064 277.9G 8e Linux LVM


Disk /dev/sda: 558.9 GiB, 600127266816 bytes, 1172123568 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sdb: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 9136C384-ECA5-44E1-B3D8-735EFA99934A

Device     Start        End    Sectors   Size Type
/dev/sdb1   2048       6143       4096     2M VMware Virtual SAN
/dev/sdb2   6144 1758174734 1758168591 838.4G VMware Virsto


Disk /dev/sdc: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4B1B1BDC-46FB-46BA-80FA-DBA8FB4D3BD2

Device     Start        End    Sectors   Size Type
/dev/sdc1   2048 1758173183 1758171136 838.4G Linux filesystem




Disk /dev/mapper/onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1: 169 GiB, 181466562560 bytes, 354426880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-swap: 15.7 GiB, 16840130560 bytes, 32890880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/350014ee7aaad2514: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 9136C384-ECA5-44E1-B3D8-735EFA99934A

Device                          Start        End    Sectors   Size Type
/dev/mapper/350014ee7aaad2514p1  2048       6143       4096     2M VMware Virtua
/dev/mapper/350014ee7aaad2514p2  6144 1758174734 1758168591 838.4G VMware Virsto


Disk /dev/mapper/350014ee7000283fc: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4B1B1BDC-46FB-46BA-80FA-DBA8FB4D3BD2

Device                         Start        End    Sectors   Size Type
/dev/mapper/350014ee7000283fc1  2048 1758173183 1758171136 838.4G Linux filesyst


Disk /dev/mapper/onn-var_log_audit: 2 GiB, 2147483648 bytes, 4194304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_log: 8 GiB, 8589934592 bytes, 16777216 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_crash: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-tmp: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-home: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/gluster_vg_sda-gluster_lv_engine: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/gluster_vg_sda-gluster_lv_data: 480 GiB, 515396075520 bytes, 1006632960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
[root@node103 ~]# parted /dev/sdb
GNU Parted 3.2
Using /dev/sdb
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) help
  align-check TYPE N                        check partition N for TYPE(min|opt)
        alignment
  help [COMMAND]                           print general help, or help on
        COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition
        table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table,
        available devices, free space, all found partitions, or a particular
        partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START
        and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected
        device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition
        NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and
        copyright information of GNU Parted
(parted) mklable
  align-check TYPE N                        check partition N for TYPE(min|opt)
        alignment
  help [COMMAND]                           print general help, or help on
        COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition
        table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table,
        available devices, free space, all found partitions, or a particular
        partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START
        and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected
        device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition
        NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and
        copyright information of GNU Parted
(parted) p
Model: WD WD9001BKHG (scsi)
Disk /dev/sdb: 900GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  3146kB  2097kB
 2      3146kB  900GB   900GB

(parted) rm 2
(parted) rm1
  align-check TYPE N                        check partition N for TYPE(min|opt)
        alignment
  help [COMMAND]                           print general help, or help on
        COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition
        table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table,
        available devices, free space, all found partitions, or a particular
        partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START
        and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected
        device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition
        NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and
        copyright information of GNU Parted
(parted) p
Model: WD WD9001BKHG (scsi)
Disk /dev/sdb: 900GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system  Name  Flags
 1      1049kB  3146kB  2097kB

(parted) rm
Partition number? 1
(parted) p
Model: WD WD9001BKHG (scsi)
Disk /dev/sdb: 900GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start  End  Size  File system  Name  Flags

(parted) help
  align-check TYPE N                        check partition N for TYPE(min|opt)
        alignment
  help [COMMAND]                           print general help, or help on
        COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition
        table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table,
        available devices, free space, all found partitions, or a particular
        partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START
        and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected
        device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition
        NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and
        copyright information of GNU Parted
(parted) mkpart
Partition name?  []? disk1
File system type?  [ext2]? xfs
Start? 0%
End? 100%
(parted) p
Model: WD WD9001BKHG (scsi)
Disk /dev/sdb: 900GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start   End    Size   File system  Name   Flags
 1      1049kB  900GB  900GB  xfs          disk1

(parted) w
  align-check TYPE N                        check partition N for TYPE(min|opt)
        alignment
  help [COMMAND]                           print general help, or help on
        COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition
        table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table,
        available devices, free space, all found partitions, or a particular
        partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START
        and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected
        device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition
        NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and
        copyright information of GNU Parted
(parted) q
Information: You may need to update /etc/fstab.

[root@node103 ~]# fdisk -l
Disk /dev/sdd: 278.9 GiB, 299439751168 bytes, 584843264 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xe6ac2d12

Device     Boot   Start       End   Sectors   Size Id Type
/dev/sdd1  *       2048   2099199   2097152     1G 83 Linux
/dev/sdd2       2099200 584843263 582744064 277.9G 8e Linux LVM


Disk /dev/sda: 558.9 GiB, 600127266816 bytes, 1172123568 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sdb: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 9136C384-ECA5-44E1-B3D8-735EFA99934A

Device     Start        End    Sectors   Size Type
/dev/sdb1   2048 1758173183 1758171136 838.4G Linux filesystem


Disk /dev/sdc: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4B1B1BDC-46FB-46BA-80FA-DBA8FB4D3BD2

Device     Start        End    Sectors   Size Type
/dev/sdc1   2048 1758173183 1758171136 838.4G Linux filesystem




Disk /dev/mapper/onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1: 169 GiB, 181466562560 bytes, 354426880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-swap: 15.7 GiB, 16840130560 bytes, 32890880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/350014ee7aaad2514: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 9136C384-ECA5-44E1-B3D8-735EFA99934A

Device                          Start        End    Sectors   Size Type
/dev/mapper/350014ee7aaad2514p1  2048       6143       4096     2M VMware Virtua
/dev/mapper/350014ee7aaad2514p2  6144 1758174734 1758168591 838.4G VMware Virsto


Disk /dev/mapper/350014ee7000283fc: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4B1B1BDC-46FB-46BA-80FA-DBA8FB4D3BD2

Device                         Start        End    Sectors   Size Type
/dev/mapper/350014ee7000283fc1  2048 1758173183 1758171136 838.4G Linux filesyst


Disk /dev/mapper/onn-var_log_audit: 2 GiB, 2147483648 bytes, 4194304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_log: 8 GiB, 8589934592 bytes, 16777216 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_crash: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-tmp: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-home: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/gluster_vg_sda-gluster_lv_engine: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/gluster_vg_sda-gluster_lv_data: 480 GiB, 515396075520 bytes, 1006632960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
[root@node103 ~]# dmsetup ls
350014ee7000283fc       (253:6)
350014ee7000283fc1      (253:9)
350014ee7aaad2514       (253:5)
350014ee7aaad2514p1     (253:7)
350014ee7aaad2514p2     (253:8)
gluster_vg_sda-gluster_lv_data  (253:22)
gluster_vg_sda-gluster_lv_engine        (253:17)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda  (253:21)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda-tpool    (253:20)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda_tdata    (253:19)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda_tmeta    (253:18)
onn-home        (253:16)
onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1   (253:3)
onn-pool00      (253:10)
onn-pool00-tpool        (253:2)
onn-pool00_tdata        (253:1)
onn-pool00_tmeta        (253:0)
onn-swap        (253:4)
onn-tmp (253:15)
onn-var (253:14)
onn-var_crash   (253:13)
onn-var_log     (253:12)
onn-var_log_audit       (253:11)
[root@node103 ~]# dmsetup remove 350014ee7aaad2514
device-mapper: remove ioctl on 350014ee7aaad2514  failed: Device or resource busy
Command failed.
[root@node103 ~]# dmsetup remove 350014ee7aaad2514p1
[root@node103 ~]# dmsetup remove 350014ee7aaad2514p2
[root@node103 ~]# dmsetup remove 350014ee7aaad2514
[root@node103 ~]# dmsetup ls
350014ee7000283fc       (253:6)
350014ee7000283fc1      (253:9)
gluster_vg_sda-gluster_lv_data  (253:22)
gluster_vg_sda-gluster_lv_engine        (253:17)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda  (253:21)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda-tpool    (253:20)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda_tdata    (253:19)
gluster_vg_sda-gluster_thinpool_gluster_vg_sda_tmeta    (253:18)
onn-home        (253:16)
onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1   (253:3)
onn-pool00      (253:10)
onn-pool00-tpool        (253:2)
onn-pool00_tdata        (253:1)
onn-pool00_tmeta        (253:0)
onn-swap        (253:4)
onn-tmp (253:15)
onn-var (253:14)
onn-var_crash   (253:13)
onn-var_log     (253:12)
onn-var_log_audit       (253:11)
[root@node103 ~]# mkfs.xfs -f /dev/sdb
meta-data=/dev/sdb               isize=512    agcount=4, agsize=54942962 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=0 inobtcount=0
data     =                       bsize=4096   blocks=219771846, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=107310, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@node103 ~]# blkid
/dev/mapper/onn-var_crash: UUID="00050fc2-5319-46da-b6c2-b0557f602845" BLOCK_SIZE="512" TYPE="xfs"
/dev/sdd2: UUID="DWXIm1-1QSa-qU1q-0urm-1sRl-BEiz-NaemIW" TYPE="LVM2_member" PARTUUID="e6ac2d12-02"
/dev/sdd1: UUID="840d0f88-c5f0-4a98-a7dd-73ebf347a85b" BLOCK_SIZE="512" TYPE="xfs" PARTUUID="e6ac2d12-01"
/dev/sda: UUID="kMvSz0-GoE5-Q0vf-qrjM-3H5m-NCLg-fSTZb8" TYPE="LVM2_member"
/dev/mapper/onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1: UUID="8bef5e42-0fd1-4595-8b3c-079127a2c237" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-swap: UUID="18284c2e-3596-4596-b0e8-59924944c417" TYPE="swap"
/dev/mapper/onn-var_log_audit: UUID="928237b1-7c78-42d0-afca-dfd362225740" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-var_log: UUID="cb6aafa3-9a97-4dc5-81f6-d2da3b0fdcd9" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-var: UUID="47b2e20c-f623-404d-9a12-3b6a31b71096" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-tmp: UUID="599eda13-d184-4a59-958c-93e37bc6fdaa" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-home: UUID="ef67a11a-c786-42d9-89d0-ee518b50fce5" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/gluster_vg_sda-gluster_lv_engine: UUID="3b99a374-baa4-4783-8da8-8ecbfdb227a4" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/gluster_vg_sda-gluster_lv_data: UUID="eb5ef30a-cb48-4491-99c6-3e6c6bfe3f69" BLOCK_SIZE="512" TYPE="xfs"
/dev/sdb: UUID="7606748a-9cc4-4508-b15e-5c92a33c30a0" BLOCK_SIZE="512" TYPE="xfs"
/dev/sdc: PTUUID="4b1b1bdc-46fb-46ba-80fa-dba8fb4d3bd2" PTTYPE="gpt"
/dev/mapper/350014ee7000283fc: PTUUID="4b1b1bdc-46fb-46ba-80fa-dba8fb4d3bd2" PTTYPE="gpt"
/dev/mapper/350014ee7000283fc1: PARTLABEL="disk1" PARTUUID="925b0d54-3aa4-4e3d-8a96-db329553c5c6"
[root@node103 ~]# mkfs.xfs -f /dev/sdb

mkfs.vfat: unable to open /dev/sdb: Device or resource busy操作记录

Disk /dev/mapper/onn-tmp: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-home: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/gluster_vg_sdc-gluster_lv_engine: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/gluster_vg_sdc-gluster_lv_data: 480 GiB, 515396075520 bytes, 1006632960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
[root@node101 gluster_bricks]# clear
[root@node101 gluster_bricks]# fdisk -l
Disk /dev/sdd: 278.9 GiB, 299439751168 bytes, 584843264 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x233fb4db

Device     Boot   Start       End   Sectors   Size Id Type
/dev/sdd1  *       2048   2099199   2097152     1G 83 Linux
/dev/sdd2       2099200 584843263 582744064 277.9G 8e Linux LVM


Disk /dev/sdc: 558.9 GiB, 600127266816 bytes, 1172123568 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sdb: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes




Disk /dev/mapper/onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1: 169 GiB, 181466562560 bytes, 354426880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-swap: 15.7 GiB, 16840130560 bytes, 32890880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/350014ee7aaacc108: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/onn-var_log_audit: 2 GiB, 2147483648 bytes, 4194304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_log: 8 GiB, 8589934592 bytes, 16777216 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_crash: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-tmp: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-home: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/gluster_vg_sdc-gluster_lv_engine: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/gluster_vg_sdc-gluster_lv_data: 480 GiB, 515396075520 bytes, 1006632960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
[root@node101 gluster_bricks]# dmsetup ls
350014ee7aaacc108       (253:6)
gluster_vg_sdc-gluster_lv_data  (253:19)
gluster_vg_sdc-gluster_lv_engine        (253:14)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc  (253:18)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc-tpool    (253:17)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc_tdata    (253:16)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc_tmeta    (253:15)
onn-home        (253:13)
onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1   (253:3)
onn-pool00      (253:7)
onn-pool00-tpool        (253:2)
onn-pool00_tdata        (253:1)
onn-pool00_tmeta        (253:0)
onn-swap        (253:4)
onn-tmp (253:12)
onn-var (253:11)
onn-var_crash   (253:10)
onn-var_log     (253:9)
onn-var_log_audit       (253:8)
[root@node101 gluster_bricks]# 350014ee7aaacc108^C
[root@node101 gluster_bricks]# dmsetup remove 350014ee7aaacc108
[root@node101 gluster_bricks]# dmsetup ls
gluster_vg_sdc-gluster_lv_data  (253:19)
gluster_vg_sdc-gluster_lv_engine        (253:14)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc  (253:18)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc-tpool    (253:17)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc_tdata    (253:16)
gluster_vg_sdc-gluster_thinpool_gluster_vg_sdc_tmeta    (253:15)
onn-home        (253:13)
onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1   (253:3)
onn-pool00      (253:7)
onn-pool00-tpool        (253:2)
onn-pool00_tdata        (253:1)
onn-pool00_tmeta        (253:0)
onn-swap        (253:4)
onn-tmp (253:12)
onn-var (253:11)
onn-var_crash   (253:10)
onn-var_log     (253:9)
onn-var_log_audit       (253:8)
[root@node101 gluster_bricks]# mkfs.xfs /dev/sdb
meta-data=/dev/sdb               isize=512    agcount=4, agsize=54942962 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=0 inobtcount=0
data     =                       bsize=4096   blocks=219771846, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=107310, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@node101 gluster_bricks]#
[root@node103 ~]# fdisk -l
Disk /dev/sdd: 278.9 GiB, 299439751168 bytes, 584843264 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0xe6ac2d12

Device     Boot   Start       End   Sectors   Size Id Type
/dev/sdd1  *       2048   2099199   2097152     1G 83 Linux
/dev/sdd2       2099200 584843263 582744064 277.9G 8e Linux LVM


Disk /dev/sda: 558.9 GiB, 600127266816 bytes, 1172123568 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sdb: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sdc: 838.4 GiB, 900185481216 bytes, 1758174768 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 4B1B1BDC-46FB-46BA-80FA-DBA8FB4D3BD2

Device     Start        End    Sectors   Size Type
/dev/sdc1   2048 1758173183 1758171136 838.4G Linux filesystem




Disk /dev/mapper/onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1: 169 GiB, 181466562560 bytes, 354426880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-swap: 15.7 GiB, 16840130560 bytes, 32890880 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/onn-var_log_audit: 2 GiB, 2147483648 bytes, 4194304 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_log: 8 GiB, 8589934592 bytes, 16777216 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var_crash: 10 GiB, 10737418240 bytes, 20971520 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-var: 15 GiB, 16106127360 bytes, 31457280 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-tmp: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/onn-home: 1 GiB, 1073741824 bytes, 2097152 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 65536 bytes / 65536 bytes


Disk /dev/mapper/gluster_vg_sda-gluster_lv_engine: 100 GiB, 107374182400 bytes, 209715200 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/mapper/gluster_vg_sda-gluster_lv_data: 480 GiB, 515396075520 bytes, 1006632960 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 131072 bytes / 262144 bytes
[root@node103 ~]#
[root@node103 ~]# parted /dev/sdc
GNU Parted 3.2
Using /dev/sdc
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) help
  align-check TYPE N                        check partition N for TYPE(min|opt)
        alignment
  help [COMMAND]                           print general help, or help on
        COMMAND
  mklabel,mktable LABEL-TYPE               create a new disklabel (partition
        table)
  mkpart PART-TYPE [FS-TYPE] START END     make a partition
  name NUMBER NAME                         name partition NUMBER as NAME
  print [devices|free|list,all|NUMBER]     display the partition table,
        available devices, free space, all found partitions, or a particular
        partition
  quit                                     exit program
  rescue START END                         rescue a lost partition near START
        and END
  resizepart NUMBER END                    resize partition NUMBER
  rm NUMBER                                delete partition NUMBER
  select DEVICE                            choose the device to edit
  disk_set FLAG STATE                      change the FLAG on selected device
  disk_toggle [FLAG]                       toggle the state of FLAG on selected
        device
  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER
  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition
        NUMBER
  unit UNIT                                set the default unit to UNIT
  version                                  display the version number and
        copyright information of GNU Parted
(parted) mkpart
Partition name?  []? ^C
File system type?  [ext2]? ^C
Error: Expecting a file system type.
(parted) rm
Partition number? 1
(parted) p
Model: WD WD9001BKHG (scsi)
Disk /dev/sdc: 900GB
Sector size (logical/physical): 512B/512B
Partition Table: gpt
Disk Flags:

Number  Start  End  Size  File system  Name  Flags

(parted) q
Information: You may need to update /etc/fstab.

[root@node103 ~]# mkfs.xfs /dev/sdc
mkfs.xfs: /dev/sdc appears to contain a partition table (gpt).
mkfs.xfs: Use the -f option to force overwrite.
[root@node103 ~]# mkfs.xfs -f /dev/sdc
meta-data=/dev/sdc               isize=512    agcount=4, agsize=54942962 blks
         =                       sectsz=512   attr=2, projid32bit=1
         =                       crc=1        finobt=1, sparse=1, rmapbt=0
         =                       reflink=1    bigtime=0 inobtcount=0
data     =                       bsize=4096   blocks=219771846, imaxpct=25
         =                       sunit=0      swidth=0 blks
naming   =version 2              bsize=4096   ascii-ci=0, ftype=1
log      =internal log           bsize=4096   blocks=107310, version=2
         =                       sectsz=512   sunit=0 blks, lazy-count=1
realtime =none                   extsz=4096   blocks=0, rtextents=0
[root@node103 ~]#
[root@node103 ~]# blkid
/dev/mapper/onn-var_crash: UUID="00050fc2-5319-46da-b6c2-b0557f602845" BLOCK_SIZE="512" TYPE="xfs"
/dev/sdd2: UUID="DWXIm1-1QSa-qU1q-0urm-1sRl-BEiz-NaemIW" TYPE="LVM2_member" PARTUUID="e6ac2d12-02"
/dev/sdd1: UUID="840d0f88-c5f0-4a98-a7dd-73ebf347a85b" BLOCK_SIZE="512" TYPE="xfs" PARTUUID="e6ac2d12-01"
/dev/sda: UUID="kMvSz0-GoE5-Q0vf-qrjM-3H5m-NCLg-fSTZb8" TYPE="LVM2_member"
/dev/mapper/onn-ovirt--node--ng--4.4.10.2--0.20220303.0+1: UUID="8bef5e42-0fd1-4595-8b3c-079127a2c237" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-swap: UUID="18284c2e-3596-4596-b0e8-59924944c417" TYPE="swap"
/dev/mapper/onn-var_log_audit: UUID="928237b1-7c78-42d0-afca-dfd362225740" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-var_log: UUID="cb6aafa3-9a97-4dc5-81f6-d2da3b0fdcd9" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-var: UUID="47b2e20c-f623-404d-9a12-3b6a31b71096" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-tmp: UUID="599eda13-d184-4a59-958c-93e37bc6fdaa" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/onn-home: UUID="ef67a11a-c786-42d9-89d0-ee518b50fce5" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/gluster_vg_sda-gluster_lv_engine: UUID="3b99a374-baa4-4783-8da8-8ecbfdb227a4" BLOCK_SIZE="512" TYPE="xfs"
/dev/mapper/gluster_vg_sda-gluster_lv_data: UUID="eb5ef30a-cb48-4491-99c6-3e6c6bfe3f69" BLOCK_SIZE="512" TYPE="xfs"
/dev/sdb: UUID="7606748a-9cc4-4508-b15e-5c92a33c30a0" BLOCK_SIZE="512" TYPE="xfs"
/dev/sdc: UUID="bc42aac4-14ab-4a62-94c7-7634953b25a6" BLOCK_SIZE="512" TYPE="xfs"

你可能感兴趣的:(linux,centos,服务器)

android系统selinux中添加新属性property 辉色投像
1.定位/android/system/sepolicy/private/property_contexts声明属性开头：persist.charge声明属性类型：u:object_r:system_prop:s0图12.定位到android/system/sepolicy/public/domain.te删除neverallow{domain-init}default_prop:property
理解Gunicorn：Python WSGI服务器的基石范范0825 ipython linux 运维
理解Gunicorn：PythonWSGI服务器的基石介绍Gunicorn，全称GreenUnicorn，是一个为PythonWSGI（WebServerGatewayInterface）应用设计的高效、轻量级HTTP服务器。作为PythonWeb应用部署的常用工具，Gunicorn以其高性能和易用性著称。本文将介绍Gunicorn的基本概念、安装和配置，帮助初学者快速上手。1.什么是Gunico
swagger访问路径 igotyback swagger
Swagger2.x版本访问地址：http://{ip}:{port}/{context-path}/swagger-ui.html{ip}是你的服务器IP地址。{port}是你的应用服务端口，通常为8080。{context-path}是你的应用上下文路径，如果应用部署在根路径下，则为空。Swagger3.x版本对于Swagger3.x版本（也称为OpenAPI3）访问地址：http://{ip
Linux下QT开发的动态库界面弹出操作（SDL2） 13jjyao QT类 qt 开发语言 sdl2 linux
需求：操作系统为linux，开发框架为qt，做成需带界面的qt动态库，调用方为java等非qt程序难点：调用方为java等非qt程序，也就是说调用方肯定不带QApplication::exec()，缺少了这个，QTimer等事件和QT创建的窗口将不能弹出(包括opencv也是不能弹出)；这与qt调用本身qt库是有本质的区别的思路：1.调用方缺QApplication::exec()，那么我们在接口
高级编程--XML+socket练习题 masa010 java 开发语言
1.北京华北2114.8万人上海华东2,500万人广州华南1292.68万人成都华西1417万人（1）使用dom4j将信息存入xml中（2）读取信息，并打印控制台（3）添加一个city节点与子节点（4）使用socketTCP协议编写服务端与客户端，客户端输入城市ID，服务器响应相应城市信息（5）使用socketTCP协议编写服务端与客户端，客户端要求用户输入city对象，服务端接收并使用dom4j
linux sdl windows.h,Windows下的SDL安装奔跑吧linux内核 linux sdl windows.h
首先你要下载并安装SDL开发包。如果装在C盘下，路径为C:\SDL1.2.5如果在WINDOWS下。你可以按以下步骤：1.打开VC++，点击"Tools",Options2,点击directories选项3.选择"Includefiles"增加一个新的路径。"C:\SDL1.2.5\include"4，现在选择"Libaryfiles“增加"C:\SDL1.2.5\lib"现在你可以开始编写你的第
linux中sdl的使用教程,sdl使用入门 Melissa Corvinus linux中sdl的使用教程
本文通过一个简单示例讲解SDL的基本使用流程。示例中展示一个窗口，窗口里面有个随机颜色快随机移动。当我们鼠标点击关闭按钮时间窗口关闭。基本步骤如下：1.初始化SDL并创建一个窗口。SDL_Init()初始化SDL_CreateWindow()创建窗口2.纹理渲染存储RGB和存储纹理的区别：比如一个从左到右由红色渐变到蓝色的矩形，用存储RGB的话就需要把矩形中每个点的具体颜色值存储下来；而纹理只是一
PHP环境搭建详细教程好看资源平台前端 php
PHP是一个流行的服务器端脚本语言，广泛用于Web开发。为了使PHP能够在本地或服务器上运行，我们需要搭建一个合适的PHP环境。本教程将结合最新资料，介绍在不同操作系统上搭建PHP开发环境的多种方法，包括Windows、macOS和Linux系统的安装步骤，以及本地和Docker环境的配置。1.PHP环境搭建概述PHP环境的搭建主要分为以下几类：集成开发环境：例如XAMPP、WAMP、MAMP，这
使用 FinalShell 进行远程连接（ssh 远程连接 Linux 服务器）编程经验分享开发工具服务器 ssh linux
目录前言基本使用教程新建远程连接连接主机自定义命令路由追踪前言后端开发，必然需要和服务器打交道，部署应用，排查问题，查看运行日志等等。一般服务器都是集中部署在机房中，也有一些直接是云服务器，总而言之，程序员不可能直接和服务器直接操作，一般都是通过ssh连接来登录服务器。刚接触远程连接时，使用的是XSHELL来远程连接服务器，连接上就能够操作远程服务器了，但是仅用XSHELL并没有上传下载文件的功能
git - Webhook让部署自动化大猪大猪
我们现在有一个需求，将项目打包上传到gitlab或者github后，程序能自动部署，不用手动地去服务器中进行项目更新并运行，如何做到？这里我们可以使用gitlab与github的挂钩，挂钩的原理就是，每当我们有请求到gitlab与github服务器时，这时他俩会根据我们配置的挂钩地扯进行访问，webhook挂钩程序会一直监听着某个端口请求，一但收到他们发过来的请求，这时就知道用户有请求提交了，这时
libyuv之linux编译 jaronho Linux linux 运维服务器
文章目录一、下载源码二、编译源码三、注意事项1、银河麒麟系统（aarch64）（1）解决armv8-a+dotprod+i8mm指令集支持问题（2）解决armv9-a+sve2指令集支持问题一、下载源码到GitHub网站下载https://github.com/lemenkov/libyuv源码，或者用直接用git克隆到本地，如：gitclonehttps://github.com/lemenko
第六集如何安装CentOS7.0，3分钟学会centos7安装教程 date分享
从光盘引导系统按回车键继续进入引导程序安装界面，选择语言这里选择简体中文版点击继续选择桌面安装下面给系统分区选择磁盘，点击完成选择基本分区，点击加号swap分区,大小填内存的两倍在选择根分区，使用所有可用的磁盘空间选择文件系统ext4点击完成，点击开始安装设置root密码，点击完成设置普通用户和密码，点击完成整个过程持续八分钟左右根据个人配置不同，时间长短不同好，现在点击重启系统进入重启状态点击本
ARM驱动学习之5 LEDS驱动 JT灬新一嵌入式 C 底层 arm开发学习单片机
ARM驱动学习之5LEDS驱动知识点：•linuxGPIO申请函数和赋值函数–gpio_request–gpio_set_value•三星平台配置GPIO函数–s3c_gpio_cfgpin•GPIO配置输出模式的宏变量–S3C_GPIO_OUTPUT注意点：DRIVER_NAME和DEVICE_NAME匹配。实现步骤：1.加入需要的头文件：//Linux平台的gpio头文件#include//三
【华为OD技术面试真题精选 - 非技术题】 -HR面，综合面_华为od hr面一个射手座的程序媛程序员华为od 面试职场和发展
最后的话最近很多小伙伴找我要Linux学习资料，于是我翻箱倒柜，整理了一些优质资源，涵盖视频、电子书、PPT等共享给大家！资料预览给大家整理的视频资料：给大家整理的电子书资料：如果本文对你有帮助，欢迎点赞、收藏、转发给朋友，让我有持续创作的动力！网上学习资料一大堆，但如果学到的知识不成体系，遇到问题时只是浅尝辄止，不再深入研究，那么很难做到真正的技术提升。需要这份系统化的资料的朋友，可以点击这里获
简介Shell、zsh、bash zhaosuningsn Shell zsh bash shell linux bash
Shell是Linux和Unix的外壳，类似衣服，负责外界与Linux和Unix内核的交互联系。例如接收终端用户及各种应用程序的命令，把接收的命令翻译成内核能理解的语言，传递给内核，并把内核处理接收的命令的结果返回给外界，即Shell是外界和内核沟通的桥梁或大门。Linux和Unix提供了多种Shell，其中有种bash，当然还有其他好多种。Mac电脑中不但有bash，还有一个zsh，预装的，据说
Linux MariaDB使用OpenSSL安装SSL证书 Meta39 MySQL Oracle MariaDB Linux Windows ssl linux mariadb
进入到证书存放目录，批量删除.pem证书警告：确保已经进入到证书存放目录find.-typef-iname\*.pem-delete查看是否安装OpenSSLopensslversion没有则安装yuminstallopensslopenssl-devel开启SSL编辑/etc/my.cnf文件（没有的话就创建，但是要注意，在/etc/my.cnf.d/server.cnf配置了datadir的，
1分钟解决 -bash: mvn: command not found，在Centos 7中安装Maven Energet!c 开发语言
1分钟解决-bash:mvn:commandnotfound，在Centos7中安装Maven检查Java环境1下载Maven2解压Maven3配置环境变量4验证安装5常见问题与注意事项6总结检查Java环境Maven依赖Java环境，请确保系统已经安装了Java并配置了环境变量。可以通过以下命令检查：java-version如果未安装，请先安装Java。1下载Maven从官网下载：前往Apach
CentOS的根目录下，/bin 和 /sbin 用途和权限 Energet!c Linux日常 centos linux 运维
CentOS的根目录下，/bin和/sbin用途和权限一、/bin(Binary)二、/sbin(SystemBinary)三、总结在CentOS的根目录下，/bin和/sbin目录有不同的用途和权限一、/bin(Binary)用途:存放系统的基本命令，这些命令对所有用户都是可用的。例如：ls、cp、mv、rm等。权限:普通用户和系统管理员都可以使用这些命令。二、/sbin(SystemBinar
【从浅识到熟知Linux】Linux发展史 Jammingpro 从浅学到熟知Linux linux 运维服务器
归属专栏：从浅学到熟知Linux个人主页：Jammingpro每日努力一点点，技术变化看得见文章前言：本篇文章记录Linux发展的历史，因在介绍Linux过程中涉及的其他操作系统及人物，本文对相关内容也有所介绍。文章目录Unix发展史Linux发展史开源Linux官网企业应用情况发行版本在学习Linux前，我们可能都会问Linux从哪里来？它是如何发展的。但在介绍Linux之前，需要先介绍一下Un
linux 发展史种树的猴子内核 java 操作系统 linux 大数据
linux发展史说明此前对linux认识模糊一知半解，近期通过学习将自己对于linux的发展总结一下方便大家日后的学习。那Linux是目前一款非常火热的开源操作系统，可是linux是什么时候出现的，又是因为什么样的原因被开发出来的呢。以下将对linux的发展历程进行详细的讲解。目录一、Linux发展背景二、UINIX的诞生三、UNIX的重要分支-BSD的诞生四、Minix的诞生五、GNU与Free
Linux sh命令 fengyehongWorld Linux linux
目录一.基本语法二.选项2.1-c字符串中读取内容，并执行2.1.1基本用法2.1.2获取当前目录下失效的超链接2.2-x每个命令执行之前，将其打印出来2.3结合Here文档使用一.基本语法⏹Linux和Unix系统中用于执行shell脚本或运行命令的命令。sh[选项][脚本文件][参数...]⏹选项-c：从字符串中读取内容，并执行。-x：在每个命令执行之前，将其打印出来。-s：从标准流中读取内容
Linux vi常用命令 fengyehongWorld Linux linux
参考资料viコマンド（vimコマンド）リファレンス目录一.保存系命令二.删除系命令三.移动系命令四.复制粘贴系命令一.保存系命令⏹保存并退出:wq⏹强制保存并退出:wq!⏹退出(文件未编辑):q⏹强制退出(忽略已编辑内容):q!⏹另存为:w新文件名二.删除系命令⏹删除当前行dd⏹清空整个文档gg：移动到文档顶部dG：删除到最后一行ggdG三.移动系命令⏹移动到文档顶部gg⏹移动到文档底部#方式1G
CentOS 7官方源停服，配置本机光盘yum源码哝小鱼 linux运维 centos linux 运维
1、挂载系统光盘mkdir/mnt/isomount-oloop/tools/CentOS-7-x86_64-DVD-1810.iso/mnt/isocd/mnt/iso/Packages/rpm-ivh/mnt/iso/Packages/yum-utils-1.1.31-50.el7.noarch.rpm(图形界面安装，默契已安装）如安装yum-utils依赖错误，按提示安装依赖包rpm-ivh
第1步win10宿主机与虚拟机通过NAT共享上网互通学习3人组大数据大数据
VM的CentOS采用NAT共用宿主机网卡宿主机器无法连接到虚拟CentOS要实现宿主机与虚拟机通信，原理就是给宿主机的网卡配置一个与虚拟机网关相同网段的IP地址，实现可以互通。1、查看虚拟机的IP地址2、编辑虚拟机的虚拟网络的NAT和DHCP的配置，设置虚拟机的网卡选择NAT共享模式3、宿主机的IP配置，确保vnet8的IPV4属性与虚拟机在同一网段4、ping测试连通性[root@localh
Linux查看服务器日志 TPBoreas 运维 linux 运维
一、tail这个是我最常用的一种查看方式用法如下：tail-n10test.log查询日志尾部最后10行的日志;tail-n+10test.log查询10行之后的所有日志;tail-fn10test.log循环实时查看最后1000行记录(最常用的)一般还会配合着grep用，(实时抓包)例如:tail-fn1000test.log|grep'关键字'（动态抓包）tail-fn1000test.log
Python多线程实现大规模数据集高效转移 sand&wich 网络 python 服务器
背景在处理大规模数据集时，通常需要在不同存储设备、不同服务器或文件夹之间高效地传输数据。如果采用单线程传输方式，当数据量非常大时，整个过程会非常耗时。因此，通过多线程并行处理可以大幅提升数据传输效率。本文将分享一个基于Python多线程实现的高效数据传输工具，通过遍历源文件夹中的所有文件，将它们移动到目标文件夹。工具和库这个数据集转移工具主要依赖于以下Python标准库：os：用于文件系统操作，如
笋丁网页自动回复机器人V3.0.0免授权版源码希希分享软希网58soho_cn 源码资源笋丁网页自动回复机器人
笋丁网页机器人一款可设置自动回复，默认消息，调用自定义api接口的网页机器人。此程序后端语言使用Golang，内存占用最高不超过30MB，1H1G服务器流畅运行。仅支持Linux服务器部署，不支持虚拟主机，请悉知！使用自定义api功能需要有一定的建站基础。源码下载：https://download.csdn.net/download/m0_66047725/89754250更多资源下载：关注我。安
深入浅出 -- 系统架构之负载均衡Nginx的性能优化 xiaoli8748_软件开发系统架构系统架构负载均衡 nginx
一、Nginx性能优化到这里文章的篇幅较长了，最后再来聊一下关于Nginx的性能优化，主要就简单说说收益最高的几个优化项，在这块就不再展开叙述了，毕竟影响性能都有多方面原因导致的，比如网络、服务器硬件、操作系统、后端服务、程序自身、数据库服务等，对于性能调优比较感兴趣的可以参考之前《JVM性能调优》中的调优思想。优化一：打开长连接配置通常Nginx作为代理服务，负责分发客户端的请求，那么建议开启H
最简单将静态网页挂载到服务器上(不用nginx) 全能全知者服务器 nginx 运维前端 html 笔记
最简单将静态网页挂载到服务器上(不用nginx)如果随便弄个静态网页挂在服务器都要用nignx就太麻烦了，所以直接使用Apache来搭建一些简单前端静态网页会相对方便很多检查Web服务器服务状态：sudosystemctlstatushttpd#ApacheWeb服务器如果发现没有安装web服务器：安装Apache：sudoyuminstallhttpd启动Apache：sudosystemctl
阿里云服务器4核8G配置购买及价格类文章汇总（10篇）阿里云最新优惠和活动汇总
阿里云服务器4核8G配置如何购买？价格是多少？4核8G配置的阿里云服务器可以通过云服务器产品页购买也可以通过阿里云活动去下单购买，一般通过活动购买的用户比较多，但是不同实例规格的阿里云服务器价格不一样，带宽不同价格也不一样，本文为大家汇总了10篇关于阿里云服务器4核8G配置购买教程文章和价格类文章，分为购买类文章和价格类文章，以供大家参考如何购买阿里云服务器4核8G配置和最新优惠价格是多少。阿里云
PHP，安卓，UI，java，linux视频教程合集 cocos2d-x小菜 java UI linux PHP android
╔-----------------------------------╗┆
zookeeper admin 笔记 braveCS zookeeper
Required Software 1) JDK>=1.6 2)推荐使用ensemble的ZooKeeper(至少3台)，并run on separate machines 3)在Yahoo!，zk配置在特定的RHEL boxes里，2个cpu，2G内存，80G硬盘数据和日志目录 1)数据目录里的文件是zk节点的持久化备份，包括快照和事务日
Spring配置多个连接池 easterfly spring
项目中需要同时连接多个数据库的时候，如何才能在需要用到哪个数据库就连接哪个数据库呢？ Spring中有关于dataSource的配置： <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" &nb
Mysql 171815164 mysql
例如，你想myuser使用mypassword从任何主机连接到mysql服务器的话。 GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%'IDENTIFIED BY 'mypassword' WI TH GRANT OPTION; 如果你想允许用户myuser从ip为192.168.1.6的主机连接到mysql服务器，并使用mypassword作
CommonDAO（公共/基础DAO） g21121 DAO
好久没有更新博客了，最近一段时间工作比较忙，所以请见谅，无论你是爱看呢还是爱看呢还是爱看呢，总之或许对你有些帮助。 DAO(Data Access Object)是一个数据访问（顾名思义就是与数据库打交道）接口，DAO一般在业
直言有讳永夜-极光感悟随笔
1.转载地址:http://blog.csdn.net/jasonblog/article/details/10813313 精华: “直言有讳”是阿里巴巴提倡的一种观念，而我在此之前并没有很深刻的认识。为什么呢？就好比是读书时候做阅读理解，我喜欢我自己的解读，并不喜欢老师给的意思。在这里也是。我自己坚持的原则是互相尊重，我觉得阿里巴巴很多价值观其实是基本的做人
安装CentOS 7 和Win 7后，Win7 引导丢失随便小屋 centos
一般安装双系统的顺序是先装Win7，然后在安装CentOS，这样CentOS可以引导WIN 7启动。但安装CentOS7后，却找不到Win7 的引导，稍微修改一点东西即可。一、首先具有root 的权限。即进入Terminal后输入命令su，然后输入密码即可二、利用vim编辑器打开/boot/grub2/grub.cfg文件进行修改 v
Oracle备份与恢复案例 aijuans oracle
Oracle备份与恢复案例一. 理解什么是数据库恢复当我们使用一个数据库时，总希望数据库的内容是可靠的、正确的，但由于计算机系统的故障（硬件故障、软件故障、网络故障、进程故障和系统故障）影响数据库系统的操作，影响数据库中数据的正确性，甚至破坏数据库，使数据库中全部或部分数据丢失。因此当发生上述故障后，希望能重构这个完整的数据库，该处理称为数据库恢复。恢复过程大致可以分为复原(Restore)与
JavaEE开源快速开发平台G4Studio v5.0发布無為子
我非常高兴地宣布,今天我们最新的JavaEE开源快速开发平台G4Studio_V5.0版本已经正式发布。访问G4Studio网站 http://www.g4it.org 2013-04-06 发布G4Studio_V5.0版本功能新增 (1). 新增了调用Oracle存储过程返回游标，并将游标映射为Java List集合对象的标
Oracle显示根据高考分数模拟录取百合不是茶 PL/SQL编程 oracle例子模拟高考录取学习交流
题目要求: 1,创建student表和result表 2,pl/sql对学生的成绩数据进行处理 3,处理的逻辑是根据每门专业课的最低分线和总分的最低分数线自动的将录取和落选 1,创建student表,和result表学生信息表; create table student( student_id number primary key,--学生id
优秀的领导与差劲的领导 bijian1013 领导管理团队
责任优秀的领导：优秀的领导总是对他所负责的项目担负起责任。如果项目不幸失败了，那么他知道该受责备的人是他自己，并且敢于承认错误。差劲的领导：差劲的领导觉得这不是他的问题，因此他会想方设法证明是他的团队不行，或是将责任归咎于团队中他不喜欢的那几个成员身上。努力工作优秀的领导：团队领导应该是团队成员的榜样。至少，他应该与团队中的其他成员一样努力工作。这仅仅因为他
js函数在浏览器下的兼容 Bill_chen jquery 浏览器 IE DWR ext
做前端开发的工程师，少不了要用FF进行测试，纯js函数在不同浏览器下，名称也可能不同。对于IE6和FF，取得下一结点的函数就不尽相同： IE6：node.nextSibling,对于FF是不能识别的； FF：node.nextElementSibling,对于IE是不能识别的；兼容解决方式：var Div = node.nextSibl
【JVM四】老年代垃圾回收：吞吐量垃圾收集器(Throughput GC) bit1129 垃圾回收
吞吐量与用户线程暂停时间衡量垃圾回收算法优劣的指标有两个：吞吐量越高，则算法越好暂停时间越短，则算法越好首先说明吞吐量和暂停时间的含义。垃圾回收时，JVM会启动几个特定的GC线程来完成垃圾回收的任务，这些GC线程与应用的用户线程产生竞争关系，共同竞争处理器资源以及CPU的执行时间。GC线程不会对用户带来的任何价值，因此，好的GC应该占
J2EE监听器和过滤器基础白糖_ J2EE
Servlet程序由Servlet，Filter和Listener组成，其中监听器用来监听Servlet容器上下文。监听器通常分三类：基于Servlet上下文的ServletContex监听，基于会话的HttpSession监听和基于请求的ServletRequest监听。 ServletContex监听器 ServletContex又叫application
博弈AngularJS讲义(16) - 提供者 boyitech js AngularJS api Angular Provider
Angular框架提供了强大的依赖注入机制，这一切都是有注入器(injector)完成. 注入器会自动实例化服务组件和符合Angular API规则的特殊对象，例如控制器，指令，过滤器动画等。那注入器怎么知道如何去创建这些特殊的对象呢？ Angular提供了5种方式让注入器创建对象，其中最基础的方式就是提供者(provider), 其余四种方式(Value, Fac
java-写一函数f(a,b)，它带有两个字符串参数并返回一串字符，该字符串只包含在两个串中都有的并按照在a中的顺序。 bylijinnan java
public class CommonSubSequence { /** * 题目：写一函数f(a,b)，它带有两个字符串参数并返回一串字符，该字符串只包含在两个串中都有的并按照在a中的顺序。 * 写一个版本算法复杂度O(N^2)和一个O(N) 。 * * O(N^2)：对于a中的每个字符，遍历b中的每个字符，如果相同，则拷贝到新字符串中。 * O(
sqlserver 2000 无法验证产品密钥 Chen.H sql windows SQL Server Microsoft
在 Service Pack 4 (SP 4), 是运行 Microsoft Windows Server 2003、 Microsoft Windows Storage Server 2003 或 Microsoft Windows 2000 服务器上您尝试安装 Microsoft SQL Server 2000 通过卷许可协议 (VLA) 媒体。这样做, 收到以下错误信息CD KEY的 SQ
[新概念武器]气象战争 comsci
气象战争的发动者必须是拥有发射深空航天器能力的国家或者组织.... 原因如下: 地球上的气候变化和大气层中的云层涡旋场有密切的关系,而维持一个在大气层某个层次
oracle 中 rollup、cube、grouping 使用详解 daizj oracle grouping rollup cube
oracle 中 rollup、cube、grouping 使用详解 -- 使用oracle 样例表演示转自namesliu -- 使用oracle 的样列库，演示 rollup, cube, grouping 的用法与使用场景 --- ROLLUP ，为了理解分组的成员数量，我增加了分组的计数 COUNT(SAL)
技术资料汇总分享 Dead_knight 技术资料汇总分享
本人汇总的技术资料，分享出来，希望对大家有用。 http://pan.baidu.com/s/1jGr56uE 资料主要包含： Workflow->工作流相关理论、框架(OSWorkflow、JBPM、Activiti、fireflow...) Security->java安全相关资料(SSL、SSO、SpringSecurity、Shiro、JAAS...) Ser
初一下学期难记忆单词背诵第一课 dcj3sjt126com english word
could 能够 minute 分钟 Tuesday 星期二 February 二月 eighteenth 第十八 listen 听 careful 小心的，仔细的 short 短的 heavy 重的 empty 空的 certainly 当然 carry 携带；搬运 tape 磁带 basket 蓝子 bottle 瓶 juice 汁，果汁 head 头；头部
截取视图的图片, 然后分享出去 dcj3sjt126com OS Objective-C
OS 7 has a new method that allows you to draw a view hierarchy into the current graphics context. This can be used to get an UIImage very fast. I implemented a category method on UIView to get the vi
MySql重置密码 fanxiaolong MySql重置密码
方法一: 在my.ini的[mysqld]字段加入： skip-grant-tables 重启mysql服务，这时的mysql不需要密码即可登录数据库然后进入mysql mysql>use mysql; mysql>更新 user set password=password('新密码') WHERE User='root'; mysq
Ehcache（03）——Ehcache中储存缓存的方式 234390216 ehcache MemoryStore DiskStore 存储驱除策略
Ehcache中储存缓存的方式目录 1 堆内存（MemoryStore） 1.1 指定可用内存 1.2 驱除策略 1.3 元素过期 2 &nbs
spring mvc中的@propertysource jackyrong spring mvc
在spring mvc中，在配置文件中的东西，可以在java代码中通过注解进行读取了： @PropertySource 在spring 3.1中开始引入比如有配置文件 config.properties mongodb.url=1.2.3.4 mongodb.db=hello 则代码中 @PropertySource(&
重学单例模式 lanqiu17 单例 Singleton 模式
最近在重新学习设计模式，感觉对模式理解更加深刻。觉得有必要记下来。第一个学的就是单例模式，单例模式估计是最好理解的模式了。它的作用就是防止外部创建实例，保证只有一个实例。单例模式的常用实现方式有两种，就人们熟知的饱汉式与饥汉式，具体就不多说了。这里说下其他的实现方式静态内部类方式: package test.pattern.singleton.statics; publ
.NET开源核心运行时，且行且珍惜 netcome java .net 开源
背景 2014年11月12日，ASP.NET之父、微软云计算与企业级产品工程部执行副总裁Scott Guthrie，在Connect全球开发者在线会议上宣布，微软将开源全部.NET核心运行时，并将.NET 扩展为可在 Linux 和 Mac OS 平台上运行。.NET核心运行时将基于MIT开源许可协议发布，其中将包括执行.NET代码所需的一切项目——CLR、JIT编译器、垃圾收集器（GC）和核心
使用oscahe缓存技术减少与数据库的频繁交互 Everyday都不同 Web 高并发 oscahe缓存
此前一直不知道缓存的具体实现，只知道是把数据存储在内存中，以便下次直接从内存中读取。对于缓存的使用也没有概念，觉得缓存技术是一个比较”神秘陌生“的领域。但最近要用到缓存技术，发现还是很有必要一探究竟的。缓存技术使用背景：一般来说，对于web项目，如果我们要什么数据直接jdbc查库好了，但是在遇到高并发的情形下，不可能每一次都是去查数据库，因为这样在高并发的情形下显得不太合理——
Spring+Mybatis 手动控制事务 toknowme mybatis
@Override public boolean testDelete(String jobCode) throws Exception { boolean flag = false; &nbs
菜鸟级的android程序员面试时候需要掌握的知识点 xp9802 android
熟悉Android开发架构和API调用掌握APP适应不同型号手机屏幕开发技巧熟悉Android下的数据存储熟练Android Debug Bridge Tool 熟练Eclipse/ADT及相关工具熟悉Android框架原理及Activity生命周期熟练进行Android UI布局熟练使用SQLite数据库；熟悉Android下网络通信机制，S