An amd64 running fbsd9-RC1 was shutdown overnight from the 'shutdown
-p now' command. It reported an unclean shutdown and I ran 'fsck
-y'. Still it will not boot and the message is "Journal timestamp
does not match fs mount time".
This is occurring for both /var and /usr.
Sporadic episodes of dd, mount, fsck and the like produced no results-
apparently if the journal is out of sync then FreeBSD offers no utility to
fix it.
With a new disk and install of FreeBSD9 then I could mount ufs /usr read-only
and copy files to the new installation and then with 'zfs list' created a
mount-point for the zfs disk and copied those files as well.
Seems like one of the disks was failing.
I decided to use a partition of the large disk; i.e., ada0p9:
# zpool attach bigD /dev/gpt/bigD0 /dev/ada0p9
**********************************************************
The first 74g disk is reporting errors:
(146) @ 16:10:30> zpool status bigD
pool: bigD
state: ONLINE
status: One or more devices is currently being resilvered. The
pool will continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
scan: resilver in progress since Sat Feb 11 15:59:48 2012
3.82G scanned out of 4.19G at 5.60M/s, 0h1m to go 3.82G resilvered,
91.02% done
config:
NAME STATE READ WRITE CKSUM
bigD ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
gpt/bigD0 ONLINE 0 0 1 (resilvering)
gpt/bigD1 ONLINE 0 0 0
ada0p9 ONLINE 0 0 0 (resilvering)
errors: No known data errors
**********************************************************
No data errors, now spread across three disks:
(149) @ 16:14:18> zpool status bigD
pool: bigD
state: ONLINE
status: One or more devices has experienced an unrecoverable error.
An attempt was made to correct the error. Applications are unaffected
action: Determine if the device needs to be replaced, and clear the
errors using 'zpool clear' or replace the device with 'zpool replace'.
scan: resilvered 4.20G in 0h14m with 0 errors on Sat Feb 11 16:14:22
config:
NAME STATE READ WRITE CKSUM
bigD ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
gpt/bigD0 ONLINE 0 0 1
gpt/bigD1 ONLINE 0 0 0
ada0p9 ONLINE 0 0 0
errors: No known data errors
**********************************************************
Just in case:
(31) @ 16:16:54> gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot \
-i 1 ada0 bootcode written to ada0
**********************************************************
Clear the error, so I can run 'zpool status' again:
(151) @ 16:20:21> zpool clear bigD /dev/gpt/bigD0
**********************************************************
(152) @ 16:21:00> zpool status bigD
pool: bigD
state: ONLINE scan: resilvered 4.20G in 0h14m with 0 errors
config:
NAME STATE READ WRITE CKSUM
bigD ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
gpt/bigD0 ONLINE 0 0 0
gpt/bigD1 ONLINE 0 0 0
ada0p9 ONLINE 0 0 0
errors: No known data errors
**********************************************************
# shutdown -r now
**********************************************************
(29) @ 16:26:10> zpool scrub bigD
**********************************************************
The disk is reporting more errors:
(30) @ 16:27:03> zpool status bigD
pool: bigD
state: ONLINE
status: One or more devices has experienced an unrecoverable error.
An attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the
errors using 'zpool clear' or replace the device with 'zpool replace'.
scan: scrub in progress since Sat Feb 11 16:26:51 2012
1.16G scanned out of 4.19G at 3.46M/s, 0h14m to go
120K repaired, 27.76% done
config:
NAME STATE READ WRITE CKSUM
bigD ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
gpt/bigD0 ONLINE 0 0 19 (repairing)
gpt/bigD1 ONLINE 0 0 0
ada0p9 ONLINE 0 0 0
errors: No known data errors
**********************************************************
If the disk fails, the data mirror should still be okay:
A mirror of two or more devices. Data is replicated in an
identical fashion across all components of a mirror.
A mirror with N disks of size X can hold X bytes
and can withstand (N-1) devices failing before
data integrity is compromised.
**********************************************************
(33) @ 16:41:14> zpool status bigD
pool: bigD
state: ONLINE
status: One or more devices has experienced an unrecoverable error.
An attempt was made to correct the error. Applications are unaffected.
action: Determine if the device needs to be replaced, and clear the
errors using 'zpool clear' or replace the device with 'zpool replace'.
scan: scrub repaired 638K in 0h14m with 0 errors on Sat Feb 11
16:41:29 2012
config:
NAME STATE READ WRITE CKSUM
bigD ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
gpt/bigD0 ONLINE 0 0 44
gpt/bigD1 ONLINE 0 0 0
ada0p9 ONLINE 0 0 0
errors: No known data errors
**********************************************************
Darrel
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