From: Johnson, Chad (CJohnson4@tiaa-cref.org)
Date: Tue Feb 28 2006 - 08:18:20 EST
I have a system which crashed and upon reboot / requires fsck. At the
end of this message is a transcript of that session. Also, df -h
provides the following (-h used here for readability):
# issuing df -h
drsmpapp02# df -h
Filesystem size used avail capacity Mounted on
/dev/dsk/c1t0d0s0 59G 16384E 7.0T 30068789918983% /
/proc 0K 0K 0K 0% /proc
mnttab 0K 0K 0K 0% /etc/mnttab
swap 35G 16K 35G 1% /tmp
/dev/dsk/c1t0d0s3 39G 601M 38G 2% /app
Interestingly enough 'fstyp -v /dev/dsk/c1t0d0s0' returns the following
(look at the nbfree line). The first output of 'fstyp -v
/dev/dsk/<blah>' is from the problem system, the second from an
alternate 'good' system of identical configuration.
drsmpapp02# fstyp -v /dev/dsk/c1t0d0s0 | more
ufs
magic 11954 format dynamic time Tue Feb 28 07:39:36 2006
sblkno 16 cblkno 24 iblkno 32 dblkno 784
sbsize 3072 cgsize 8192 cgoffset 424 cgmask 0xffffffe0
ncg 1237 size 62918208 blocks 61968156
bsize 8192 shift 13 mask 0xffffe000
fsize 1024 shift 10 mask 0xfffffc00
frag 8 shift 3 fsbtodb 1
minfree 1% maxbpg 2048 optim time
maxcontig 128 rotdelay 0ms rps 167
csaddr 784 cssize 20480 shift 9 mask 0xfffffe00
ntrak 24 nsect 848 spc 20352 ncyl 6183
cpg 5 bpg 6360 fpg 50880 ipg 6016
nindir 2048 inopb 64 nspf 2
nbfree 920576992 ndir -1064004991 nifree 1643964794
nffree 157424300
cgrotor 1083 fmod 0 ronly 0 logbno 203488
version 0
fs_reclaim is not set
file system state is valid, fsclean is -3
blocks available in each rotational position
cylinder number 0:
drsmpapp01# fstyp -v /dev/dsk/c1t0d0s0 | more
ufs
magic 11954 format dynamic time Tue Feb 28 07:54:34 2006
sblkno 16 cblkno 24 iblkno 32 dblkno 784
sbsize 3072 cgsize 8192 cgoffset 424 cgmask 0xffffffe0
ncg 1237 size 62918208 blocks 61968156
bsize 8192 shift 13 mask 0xffffe000
fsize 1024 shift 10 mask 0xfffffc00
frag 8 shift 3 fsbtodb 1
minfree 1% maxbpg 2048 optim time
maxcontig 128 rotdelay 0ms rps 167
csaddr 784 cssize 20480 shift 9 mask 0xfffffe00
ntrak 24 nsect 848 spc 20352 ncyl 6183
cpg 5 bpg 6360 fpg 50880 ipg 6016
nindir 2048 inopb 64 nspf 2
nbfree 7232630 ndir 8988 nifree 7355672 nffree 83706
cgrotor 174 fmod 0 ronly 0 logbno 1648
version 0
fs_reclaim FS_RECLAIM
file system state is valid, fsclean is -3
blocks available in each rotational position
cylinder number 0:
# Issuing initial fsck
drsmpapp02# fsck /dev/rdsk/c1t0d0s0
** /dev/rdsk/c1t0d0s0
BAD SUPER BLOCK: NUMBER OF DIRECTORIES OUT OF RANGE
USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION;
eg. fsck [-F ufs] -o b=# [special ...]
where # is the alternate super block. SEE fsck_ufs(1M).
# locating alternate superblocks
drsmpapp02# newfs -N /dev/rdsk/c1t0d0s0
/dev/rdsk/c1t0d0s0: 125836416 sectors in 6183 cylinders of 24
tracks, 848 sectors
61443.6MB in 1237 cyl groups (5 c/g, 49.69MB/g, 6016 i/g)
super-block backups (for fsck -F ufs -o b=#) at:
32, 102640, 205248, 307856, 410464, 513072, 615680, 718288, 820896,
923504,
Initializing cylinder groups:
........................
super-block backups for last 10 cylinder groups at:
124868880, 124971488, 125074096, 125176704, 125279312, 125381920,
125484528,
125587136, 125689744, 125792352,
# Attempting fsck with alternate superblock. NOTE: The same result is
achieved regardless of the alternate superblock supplied.
drsmpapp02# fsck -F ufs -o b=32 /dev/rdsk/c1t0d0s0
Alternate super block location: 32.
** /dev/rdsk/c1t0d0s0
BAD SUPER BLOCK: NUMBER OF DIRECTORIES OUT OF RANGE
USE AN ALTERNATE SUPER-BLOCK TO SUPPLY NEEDED INFORMATION;
eg. fsck [-F ufs] -o b=# [special ...]
where # is the alternate super block. SEE fsck_ufs(1M).
drsmpapp02#
Does anyone have a solution for this problem short of re-installing the
system (no root backups of course, not my system).
====================================
Chad Johnson
Extension 24565
Direct Dial 704.988.4565
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