I am in some difficulty here over a 100TB filesystem that
Is now unusable after a xfs_growfs command.
Is there someone that might help assist?
#mount: /dev/logfs-sessions/sessions: can't read superblock
Filesystem "dm-61": Disabling barriers, not
supported with external log device
attempt to access beyond end of device
dm-61: rw=0, want=238995038208, limit=215943192576
I/O error in filesystem ("dm-61") meta-data dev
dm-61 block 0x37a536dfff
("xfs_read_buf") error 5 buf count 512
XFS: size check 2 failed
Filesystem "dm-61": Disabling barriers, not
supported with external log device
attempt to access beyond end of device
xfs_repair –n <device> basically looks for
superblocks (phase 1 I guess ) for a long time. I’m letting it run, but
not much hope.
I’m hesitant to run xfs_repair –L or without
the –n flag for fear of making it worse.
I’ve run the following command to try to inspect
please let me know if there’s anything else that might
help determine if there’s anything I can do to recover…
-bash-3.1# xfs_check -l /dev/logfs-sessions/logdev
/dev/logfs-sessions/sessions
ERROR: The filesystem has valuable metadata changes in a log
which needs to
be replayed. Mount the filesystem to replay the log,
and unmount it before
re-running xfs_check. If you are unable to mount the
filesystem, then use
the xfs_repair -L option to destroy the log and attempt a
repair.
Note that destroying the log may cause corruption -- please
attempt a mount
of the filesystem before doing this.
-bash-3.1# xfs_db -r -c 'sb 0' -c p
/dev/logfs-sessions/sessions
magicnum = 0x58465342
blocksize = 4096
dblocks = 29874379776
rblocks = 0
rextents = 0
uuid = fc8bdf76-d962-43c1-ae60-b85f378978a6
logstart = 0
rootino = 2048
rbmino = 2049
rsumino = 2050
rextsize = 384
agblocks = 268435328
agcount = 112
rbmblocks = 0
logblocks = 32000
versionnum = 0x3184
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 = 28
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 7291520
ifree = 8514
fdblocks = 6623185597
frextents = 0
uquotino = 0
gquotino = 0
qflags = 0
flags = 0
shared_vn = 0
inoalignmt = 2
unit = 128
width = 384
dirblklog = 0
logsectlog = 0
logsectsize = 0
logsunit = 0
features2 = 0
-bash-3.1# xfs_db -r -c 'sb 2' -c p
/dev/logfs-sessions/sessions
magicnum = 0x58465342
blocksize = 4096
dblocks = 24111418368
rblocks = 0
rextents = 0
uuid = fc8bdf76-d962-43c1-ae60-b85f378978a6
logstart = 0
rootino = 2048
rbmino = 2049
rsumino = 2050
rextsize = 384
agblocks = 268435328
agcount = 90
rbmblocks = 0
logblocks = 32000
versionnum = 0x3184
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 = 28
rextslog = 0
inprogress = 0
imax_pct = 25
icount = 7291008
ifree = 8765
fdblocks = 862328436
frextents = 0
uquotino = 0
gquotino = 0
qflags = 0
flags = 0
shared_vn = 0
inoalignmt = 2
unit = 128
width = 384
dirblklog = 0
logsectlog = 0
logsectsize = 0
logsunit = 0
features2 = 0