What solaris are u using?
Is zfs compression/ dedup enabled?
Maybe I could run some test for u. I had no problems with zfs so far
-----Ursprüngliche Nachricht-----
Von: Paul Greidanus [mailto:paul.greidanus AT gmail DOT com]
Gesendet: Dienstag, 29. Dezember 2009 21:52
An: bacula-users AT lists.sourceforge DOT net
Betreff: Re: [Bacula-users] Cannot restore VMmware/ZFS
On 2009-12-28, at 6:56 PM, Marc Schiffbauer wrote:
> * Paul Greidanus schrieb am 28.12.09 um 23:44 Uhr:
>> I'm trying to restore files I have backed up on the NFS server that I'm
>> using to back VMware, but I'm getting similar errors to this every time I
>> try to restore:
>>
>> 28-Dec 12:10 krikkit-dir JobId 1433: Start Restore Job
>> Restore.2009-12-28_12.10.28_54
>> 28-Dec 12:10 krikkit-dir JobId 1433: Using Device "TL2000-1"
>> 28-Dec 12:10 krikkit-sd JobId 1433: 3307 Issuing autochanger "unload slot
>> 11, drive 0" command.
>> 28-Dec 12:11 krikkit-sd JobId 1433: 3304 Issuing autochanger "load slot 3,
>> drive 0" command.
>> 28-Dec 12:12 krikkit-sd JobId 1433: 3305 Autochanger "load slot 3, drive 0",
>> status is OK.
>> 28-Dec 12:12 krikkit-sd JobId 1433: Ready to read from volume "000009L4" on
>> device "TL2000-1" (/dev/rmt/0n).
>> 28-Dec 12:12 krikkit-sd JobId 1433: Forward spacing Volume "000009L4" to
>> file:block 473:0.
>> 28-Dec 12:15 krikkit-sd JobId 1433: Error: block.c:1010 Read error on fd=4
>> at file:blk 475:0 on device "TL2000-1" (/dev/rmt/0n). ERR=I/O error.
>> 28-Dec 12:15 krikkit-sd JobId 1433: End of Volume at file 475 on device
>> "TL2000-1" (/dev/rmt/0n), Volume "000009L4"
>> 28-Dec 12:15 krikkit-sd JobId 1433: End of all volumes.
>> 28-Dec 12:15 krikkit-fd JobId 1433: Error: attribs.c:423 File size of
>> restored file
>> /backupspool/rpool/vm2/.zfs/snapshot/backup/InvidiCA/InvidiCA-flat.vmdk not
>> correct. Original 8589934592, restored 445841408.
>>
>> Files are backed up from a zfs snapshot which is created just before the
>> backup starts. Every other file I am attempting to restore works just
>> fine...
>>
>> Is anyone out there doing ZFS snapshots for VMware, or backing up NFS
>> servers that have .vmdk files on it?
>
> No, but I could imagine that this might have something to do with
> some sparse-file setting.
>
> Have you checked how much space of your 8GB flat vmdk is aktually being
> used? Maybe this was 445841408 Bytes at backup time?
>
> Does the same happen if you do not use pre-allocated vmdk-disks?
> (Which is better anyway most of the times if you use NFS instead of vmfs)
>
All I use is preallocated disks especially on NFS.. I don't think I can
actually use sparse disks on NFS.
As a test, I created a 100Gb file from /dev/zero, and tried backing that up and
restoring it, and I get this:
29-Dec 13:45 krikkit-sd JobId 1446: Error: block.c:1010 Read error on fd=4 at
file:blk 13:0 on device "TL2000-1" (/dev/rmt/0n). ERR=I/O error.
29-Dec 13:45 krikkit-sd JobId 1446: End of Volume at file 13 on device
"TL2000-1" (/dev/rmt/0n), Volume "000010L4"
29-Dec 13:45 krikkit-sd JobId 1446: End of all volumes.
29-Dec 13:46 filer2-fd JobId 1446: Error: attribs.c:423 File size of restored
file /scratch/rpool/vm2/.zfs/snapshot/backup/100GbTest not correct. Original
66365161472, restored 376340827.
So, this tells me that whatever's going on, it's not Vmware that's causing me
the troubles.. I'm wondering if I'm running into problems with ZFS snapshot
backups, or just something with large files and Bacula?
Paul
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