Re: [zfs-discuss] Can't access my data
I seem to remember hostid being added to the zpool to solve a bug for the poor man's storage cluster. Trying doing a zdb -v ( you should see 4 copies and note if hostid is a field and if it differs from the current one) you can also try a zpool import -f -a I've seen cases where zfs mount -v -a fail but a zpool import -f -a works. I don't yet know why but I know zpool import searches /dev/dsk/ trees and my hunch is that zfs mount looks for a hostid match. This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
[zfs-discuss] Can't access my data
Hi Folks.. I have/had a zpool containing one filesystem. I had to change my hostid and needed to import my pool, (I've done his OK in the past). After the import the mount of my filesystem failed. # zpool import homespool cannot mount 'homespool/homes': mountpoint or dataset is busy The data seems it might still exist, (correct amount of used space is reported), but /homespool doesn't provide me any obvious way to get to it any more. # zfs list NAME USED AVAIL REFER MOUNTPOINT homespool9.91G 124G18K /homespool homespool/homes 9.91G 124G 9.91G /homes ls -laR /homespool /homespool: total 5 drwxr-xr-x 2 root sys2 Jan 4 11:48 . drwxr-xr-x 48 root root1024 Jan 4 20:45 .. I'd dearly love to recover this pool, (no backup, yes I know :-(. It WAS a mirror, I scrubbed it and no errors were seen, I've since detached one device to try to see if anything changed. Can anyone point out how I might read the data ?? TIA -George begin:vcard fn:George Shepherd n:Shepherd;George org:SUN Microsystems;Solaris Revenue Product Engineering, Core team -Internet adr:Minley Road, Blackwater;;Guillemont Park;Camberley;Surrey;GU17 9QG;United Kingdom email;internet:[EMAIL PROTECTED] title:Sustaining Engineer x-mozilla-html:TRUE url:www.sun.com version:2.1 end:vcard ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Can't access my data
On Jan 4, 2008 2:42 PM, George Shepherd - Sun Microsystems Home system [EMAIL PROTECTED] wrote: Hi Folks.. I have/had a zpool containing one filesystem. I had to change my hostid and needed to import my pool, (I've done his OK in the past). After the import the mount of my filesystem failed. # zpool import homespool cannot mount 'homespool/homes': mountpoint or dataset is busy ^^ # zfs list NAME USED AVAIL REFER MOUNTPOINT homespool9.91G 124G18K /homespool homespool/homes 9.91G 124G 9.91G /homes ^^ Is something else already mounted at /homes? # df -k /homes Did you or someone else cd /homes before trying this, thus causing the mount point to be busy? # fuser /homes If you still can't resolve it # zfs set mountpoint=/somewhere_else homespool/homes # zfs mount -a (not sure this needed) # cd /somewhere_else -- Mike Gerdts http://mgerdts.blogspot.com/ ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
Re: [zfs-discuss] Can't access my data
Heya, I have/had a zpool containing one filesystem. Cool, simple scenario. I had to change my hostid and needed to import my pool, (I've done his OK in the past). After the import the mount of my filesystem failed. I take it you did the 'export' part with the other hostid? Wondering if something could have got 'kludged' prior to the host change. # zpool import homespool cannot mount 'homespool/homes': mountpoint or dataset is busy What is the path it's being mounted on? Does it exist, is there nothing on it etc? If all else fails you could try a forced unmount with zfs unmount -f homespool/homes . The ZFS developers on this list might cringe at that suggestion though. :) The data seems it might still exist, (correct amount of used space is reported), but /homespool doesn't provide me any obvious way to get to it any more. # zfs list NAME USED AVAIL REFER MOUNTPOINT homespool9.91G 124G18K /homespool homespool/homes 9.91G 124G 9.91G /homes ls -laR /homespool snip What about ls /homes ? That's the specified mount point and by the looks of the above message the mount hasn't succeeded. When a zfs filesystem has a specified mountpoint outside of the volumes base mount I believe (and there's people on this list who could probably confirm) it disappears from the volume mount. It may add a symlink too (I'm just not sure if that's automatic :)) but since the mount failed it doesn't make sense. I'd dearly love to recover this pool, (no backup, yes I know :-(. It WAS a mirror, I scrubbed it and no errors were seen, I've since detached one device to try to see if anything changed. Well, the good things is you've got the volume mounted. Assuming zpool status homespool returns a good result you should be in luck. Hope that helps, -- Stuart Low Systems Infrastructure Manager iseek Communications Pty Ltd Excellence in business data solutions ph 1300 661 668 fax 1300 661 540 www.iseek.com.au ___ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
