查看XFS文件系统超级块

查看XFS的超级块信息

xfs_admin -f  {device}

xfs_admin> sb
xfs_admin> print
magicnum = 0x58465342
blocksize = 4096
dblocks = 26214400
rblocks = 0
rextents = 0
uuid = dcdb51a2-5d24-4f63-95c2-217ff7459c06
logstart = 16777220
rootino = 128
rbmino = 129
rsumino = 130
rextsize = 1
agblocks = 1638400
agcount = 16
rbmblocks = 0
logblocks = 12800
versionnum = 0x30c4
sectsize = 512
inodesize = 256
inopblock = 16
fname = "\000\000\000\000\000\000\000\000\000\000\000\000"
blocklog = 12
sectlog = 9
inodelog = 8
inopblog = 4
agblklog = 21
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 1024
ifree = 708
fdblocks = 5332335
frextents = 0
uquotino = 131
gquotino = 132
qflags = 0x77
flags = 0
shared_vn = 0
inoalignmt = 2
unit = 0
width = 0
dirblklog = 0
logsectlog = 0
logsectsize = 0
logsunit = 0
features2 = 0
xfs_admin> quit