If you have to run an fsck at boot could you maybe run iostat -xm after
it finishes? I have heard of quite a few people that say it takes hours
to do an fsck on a large volume. Mine used to take about 10 minutes but
now its up to about 12-13 minutes now that its grown larger. It took a
while before the fsck started and I didn't run iostat/uptime until a bit
after it finished which is why I estimate around 12-13 minutes:
fsck.jfs version 1.1.14, 06-Apr-2009
processing started: 4/30/2010 11.46.42
The current device is: /dev/sdc3
Block size in bytes: 4096
Filesystem size in blocks: 4360350561
**Phase 0 - Replay Journal Log
logredo failed (rc=-231). fsck continuing.
**Phase 1 - Check Blocks, Files/Directories, and Directory Entries
**Phase 2 - Count links
**Phase 3 - Duplicate Block Rescan and Directory Connectedness
**Phase 4 - Report Problems
**Phase 5 - Check Connectivity
**Phase 6 - Perform Approved Corrections
**Phase 7 - Rebuild File/Directory Allocation Maps
**Phase 8 - Rebuild Disk Allocation Maps
**Phase 9 - Reformat File System Log
17441402244 kilobytes total disk space.
2116585 kilobytes in 576387 directories.
13554546353 kilobytes in 5759875 user files.
12 kilobytes in extended attributes
7042768 kilobytes reserved for system use.
3881929696 kilobytes are available for use.
Filesystem is clean.
12:03:03 up 16 min, 1 user, load average: 0.70, 0.91, 0.66
Linux 2.6.32 (sabayonx86-64) 04/30/2010
avg-cpu: %user %nice %system %iowait %steal %idle
1.19 0.00 0.69 10.84 0.00 87.28
Device: rrqm/s wrqm/s r/s w/s rMB/s wMB/s
avgrq-sz avgqu-sz await svctm %util
sda 0.95 0.00 0.10 0.00 0.00 0.00
19.79 0.00 3.71 2.23 0.02
sda1 0.92 0.00 0.09 0.00 0.00 0.00
19.15 0.00 3.78 2.01 0.02
sdc 19104.51 6056.59 762.69 322.66 9.77 3.12
24.33 3.09 2.85 0.82 89.19
sdc1 1.06 0.00 0.07 0.00 0.00 0.00
21.59 0.00 2.37 1.25 0.01
sdc2 1.12 1.04 5.69 0.82 0.08 0.01
26.33 0.04 5.77 2.76 1.79
sdc3 19102.32 6055.55 756.91 321.84 9.70 3.11
24.32 3.05 2.83 0.81 87.70
sdb 0.64 0.00 0.08 0.00 0.00 0.00
23.20 0.00 3.79 2.81 0.02
sdb1 0.61 0.00 0.06 0.00 0.00 0.00
23.23 0.00 4.23 3.00 0.02
I was curious if the time difference is stirctly I/O speed related or
its not reading as much on mine? This was the fsck time for my 18 Tb
file-system (14 TB used) on 20x1 TB drives in raid6.
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