AIX 在硬盘rootvg上做操作系统备份mksysback方法

原文：http://blogold.chinaunix.net/u/32679/showart.php?id=2268613

 

AIX 在硬盘上做操作系统备份 mksysback ， 备份 rootvg

说明：操作系统 V6R1 ，系统中只有一个 VG rootvg

注意：smit 的log 在根目录下smit.log 可以查看该文件便于查询故障，硬盘系统备份无法引导系统，需要配置NAM 才能做恢复测试

 

 

先用 root 账户登录系统

l         步骤 1 ： lsvg   rootvg 检查评估 rootvg 大小，如下 USED PPS.

# lsvg rootvg VOLUME GROUP:       rootvg                   VG IDENTIFIER:  00c03c1400004c000000012949aa4906 VG STATE:           active                   PP SIZE:        256 megabyte(s) VG PERMISSION:      read/write               TOTAL PPs:      1092 (279552 megabytes) MAX LVs:            256                      FREE PPs:       1010 (258560 megabytes) LVs:                13                       USED PPs:       82 (20992 megabytes) OPEN LVs:           11                       QUORUM:         2 (Enabled) TOTAL PVs:          2                        VG DESCRIPTORS: 3 STALE PVs:          0                        STALE PPs:      0 ACTIVE PVs:         2                        AUTO ON:        yes MAX PPs per VG:     32512                                     MAX PPs per PV:     1016                     MAX PVs:        32 LTG size (Dynamic): 1024 kilobyte(s)         AUTO SYNC:      no HOT SPARE:          no                       BB POLICY:      relocatable

l         步骤二：检查系统文件系统那些还有足够空间存放备份文件 df –g 如下，若有必要扩空间

# df -g Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on /dev/hd4           0.50      0.32   36%    13031    15% / /dev/hd2           3.50      0.81   77%    45658    20% /usr /dev/hd9var        2.00      1.69   16%     9269     3% /var /dev/hd3           0.25      0.09   65%      112     1% /tmp /dev/hd1          10.00      6.95   31%       50     1% /home /dev/hd11admin      0.25      0.25    1%        5     1% /admin /proc                 -          -    -         -     -  /proc /dev/hd10opt       0.50      0.31   39%     8697    11% /opt /dev/livedump      0.25      0.25    1%        4     1% /var/adm/ras/livedump /dev/fslv00        1.00      0.75   25%        5     1% /wujtest

如下； /home 空间较多

若 /home 空间不足 参考如下如增加 /home 目录空间，

先 lsvg rootvg 确认 vg 中有足够可用 FREE PP

# lsvg rootvg VOLUME GROUP:       rootvg                   VG IDENTIFIER:  00c03c1400004c000000012949aa4906 VG STATE:           active                   PP SIZE:        256 megabyte(s) VG PERMISSION:      read/write               TOTAL PPs:      1092 (279552 megabytes) MAX LVs:            256                       FREE PP s:       1010 (258560 megabytes) LVs:                13                       USED PPs:       82 (20992 megabytes) OPEN LVs:           11                       QUORUM:         2 (Enabled) TOTAL PVs:          2                        VG DESCRIPTORS: 3 STALE PVs:          0                        STALE PPs:      0 ACTIVE PVs:         2                        AUTO ON:         yes MAX PPs per VG:     32512                                     MAX PPs per PV:     1016                     MAX PVs:        32 LTG size (Dynamic): 1024 kilobyte(s)         AUTO SYNC:      no HOT SPARE:          no                       BB POLICY:      relocatable

运行命令 smit chfs

选择 Change / Show Characteristics of an Enhanced Journaled File System

再选择你需要扩的 LV 的 mount point 比如我需要的 /home

 

 

 

先定位光标在 Unit Size 中按 F4 选择 Gigabytes 修改以 G 为单位

在 Number of units 输入要把 /home 扩到多大比如 11G 就输入 11

按执行键执行，等运行完成确认执行结果正常 Command: OK

COMMAND STATUS Command: OK             stdout: yes           stderr: no   Before command completion, additional instructions may appear below.   Filesystem size changed to 23068672

df –g 命令查看确认 /home 空间已经扩展成功为 11G

# df -g Filesystem    GB blocks      Free %Used    Iused %Iused Mounted on /dev/hd4           0.50      0.32   36%    13031    15% / /dev/hd2           3.50      0.81   77%    45658    20% /usr /dev/hd9var        2.00      1.69   16%     9266     3% /var /dev/hd3           0.25       0.09   65%      112     1% /tmp /dev/hd1           11.00       7.95   28%       50     1% /home /dev/hd11admin      0.25      0.25    1%        5     1% /admin /proc                 -         -    -         -     -  /proc /dev/hd10opt       0.50      0.31   39%     8697    11% /opt /dev/livedump      0.25      0.25    1%        4     1% /var/adm/ras/livedump /dev/fslv00        1.00      0.75   25%        5     1% /wujtest

l         用 touch 命令在 /home 目录下创建备份空文件

  cd /home 修改当前目录

  touch   sysbackup

注意：空文件一定要先建立否则 mksysb 无法备份成功，会有如下提示

 

报错信息 ：                                      COMMAND STATUS   Command: failed        stdout: yes           stderr: no   Before command completion, additional instructions may appear below.   Creating information file (/image.data) for rootvg.   Creating list of files to back up.   Backing up 78651 files backup: 0511-089 Cannot open /home/sysbackup: Cannot write to a directory.   0512-005 mksysb: Backup Completed.         The backup command completed with errors.         The messages displayed on Standard Error contained additional         information.

l         检查系统文件限制 /etc/security/limits 文件，修改 root 账户文件大小不限制

  运行命令 more /etc/security/limits

default:         fsize = 2097151         core = 2097151         cpu = -1         data = 262144         rss = 65536         stack = 65536         nofiles = 2000

调用 vi 命令在 /etc/security/limits 增加如下一行

root:

       fsize = -1    

default:         fsize = 2097151         core = 2097151         cpu = -1         data = 262144         rss = 65536         stack = 65536         nofiles = 2000   root:        fsize = -1

注意：若文件有限制 smit mksysb 会有如下提示

backup: 0511-432 A write error occurred: A file cannot be larger than the value set by ulimit. backup: 0511-079 The backup media may be damaged.  Use a different disk to run the backup.

l         发起备份   smit mksysb

在 Backup DEVICE or FILE 选项输入备份文件和路径例如 /home/sysbackup20100708

 

Backup DEVICE or FILE                              [/home/sysbackup20100708]

备份完成之后会有报表提示 OK 表示备份成功 , 如下，会有 /var/tmp 目录临时文件系统提示无法备份属于正常，备份之后smit 的log 在根目录下smit.log 可以查看该文件便于查询故障，硬盘系统备份无法引导系统，需要配置NAM 才能做恢复测试

COMMAND STATUS   Command: OK            stdout: yes           stderr: no   Before command completion, additional instructions may appear below.   Creating information file (/image.data) for rootvg.   Creating list of files to back up.   Backing up 78652 files.....backup: 0511-089 Cannot open ./var/tmp/slp_srvreg.lock: Cannot open or remove a file containing a running program. .....................   0512-003 mksysb may not have been able to archive some files. The messages displayed on the Standard Error contained additional information.

 

 

发表于： 2010-07-08，修改于： 2010-07-08 17:51，已浏览1315次，有评论2条 推荐 投诉