On 27.09.09 19:35, Erik Ableson wrote:
Good link - thanks. I'm looking at the details for that one and learning a
little zdb at the same time. I've got a situation perhaps a little different in
that I _do_ have a current copy of the slog in a file with what appears to be
current data.
However, I don't see how to attach the slog file to an offline zpool - I have
both a dd backup of the ramdisk slog from midnight as well as the current file
based slog :
Have you tried to make symbolic link from e.g. /dev/dsk/slog to /root/slog.tmp
and check what 'zpool import' says?
zdb -l /root/slog.tmp
version=14
name='siovale'
state=1
txg=4499446
pool_guid=13808783103733022257
hostid=4834000
hostname='shemhazai'
top_guid=6374488381605474740
guid=6374488381605474740
is_log=1
vdev_tree
type='file'
id=1
guid=6374488381605474740
path='/root/slog.tmp'
metaslab_array=230
metaslab_shift=21
ashift=9
asize=938999808
is_log=1
DTL=51
Is there any way that I can attach this slog to the zpool while it's offline?
Erik
On 27 sept. 2009, at 02:23, David Turnbull <dsturnb...@gmail.com> wrote:
I believe this is relevant: http://github.com/pjjw/logfix
Saved my array last year, looks maintained.
On 27/09/2009, at 4:49 AM, Erik Ableson wrote:
Hmmm - this is an annoying one.
I'm currently running an OpenSolaris install (2008.11 upgraded to
2009.06) :
SunOS shemhazai 5.11 snv_111b i86pc i386 i86pc Solaris
with a zpool made up of one radiz vdev and a small ramdisk based
zil. I usually swap out the zil for a file-based copy when I need
to reboot (zpool replace /dev/ramdisk/slog /root/slog.tmp) but this
time I had a brain fart and forgot to.
The server came back up and I could sort of work on the zpool but
it was complaining so I did my replace command and it happily
resilvered. Then I restarted one more time in order to test
bringing everything up cleanly and this time it can't find the file
based zil.
I try importing and it comes back with:
zpool import
pool: siovale
id: 13808783103733022257
state: UNAVAIL
status: One or more devices are missing from the system.
action: The pool cannot be imported. Attach the missing
devices and try again.
see: http://www.sun.com/msg/ZFS-8000-6X
config:
siovale UNAVAIL missing device
raidz1 ONLINE
c8d0 ONLINE
c9d0 ONLINE
c10d0 ONLINE
c11d0 ONLINE
Additional devices are known to be part of this pool, though
their
exact configuration cannot be determined.
Now the file still exists so I don't know why it can't seem to find
it and I thought the missing zil issue was corrected in this
version (or did I miss something?).
I've looked around for solutions to bring it back online and ran
across this method: <http://www.mail-archive.com/zfs-discuss@opensolaris.org/msg16545.html
but before I jump in on this one I was hoping there was a newer,
cleaner approach that I missed somehow.
Ideas appreciated...
Erik
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