>>>>> On Tue, 29 Dec 2009 13:52:08 -0700, Paul Greidanus said:
>
> 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?
Looks like a tape drive or tape problem, since you get I/O error when reading.
Did you check the syslog on the SD machine?
Does bls give the same error for that volume?
__Martin
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