[OTRS 4.0.3 Appliance] Need help with ISO backup failure

[Eric26]

Hi,

I'm using OTRS appliance 4.0.3 since few month. I performed regularly manual ISO backup of the applicance and all was working fine since these lasta days. I got this error in backup log file:

99.27% done, estimate finish Fri Jun 26 14:56:45 2015
99.48% done, estimate finish Fri Jun 26 14:56:46 2015
99.68% done, estimate finish Fri Jun 26 14:56:45 2015
99.88% done, estimate finish Fri Jun 26 14:56:46 2015
Total translation table size: 0
Total rockridge attributes bytes: 677755
Total directory bytes: 2583506
Path table size(bytes): 13442
Max brk space used 69f000
2477994 extents written (4839 MB)
2015/06/26 14:56:48 main DEBUG> [<] output: --------------------
2015/06/26 14:56:48 main INFO> Executing: genisoimage -f -L -d -l -allow-lowercase -allow-multidot -o /BACKUP/appliance.iso -b isolinux.bin -c boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table /BACKUP/root
2015/06/26 14:56:48 main DEBUG> [>] output: --------------------
Warning: creating filesystem that does not conform to ISO-9660.
Warning: -follow-links does not always work correctly; be careful.
I: -input-charset not specified, using utf-8 (detected in locale settings)
File /BACKUP/root/share.iso is larger than 4GiB-1.
-allow-limited-size was not specified. There is no way do represent this file size. Aborting.
2015/06/26 14:56:48 main DEBUG> [<] output: --------------------
2015/06/26 14:56:48 main ERROR> Returned error: 256
2015/06/26 14:56:48 main FATAL> UNKNOWN ERROR
2015/06/26 14:56:48 main INFO> Executing: umount /mnt/NODE_SNAP
2015/06/26 14:56:48 main INFO> Executing: umount /mnt/SHARE_SNAP
2015/06/26 14:56:49 main INFO> Executing: lvremove -f /dev/vg/NODE_SNAP
2015/06/26 14:56:51 main DEBUG> [>] output: --------------------
Logical volume "NODE_SNAP" successfully removed
2015/06/26 14:56:51 main DEBUG> [<] output: --------------------
2015/06/26 14:56:51 main INFO> Executing: lvremove -f /dev/vg/SHARE_SNAP
2015/06/26 14:56:52 main DEBUG> [>] output: --------------------
Logical volume "SHARE_SNAP" successfully removed
2015/06/26 14:56:52 main DEBUG> [<] output: --------------------
2015/06/26 14:57:01 main ERROR> CANCLE EXIT: unknown_error 255

Could someone help me to fix this issue?

Regards,
Eric

[crythias]

You are attempting to back up to a device that is not a DVD or CD or it's too big.

[Eric26]

Hi crythias and thanks for this quick reply.

I'm doing ISO backups localy in a ./BACKUP directory on OTRS appliance. Disk usage seems not to show any overload :

/dev/sda1 11%
/dev/vg/SHARE 40%
/dev/vg/BACKUP 24%
/dev/vg/NODE 4%
unionfs 1%
unionfs 4%
unionfs 40%

OTRS Appliance is running as a virtual machine (I'm using Ms HyperV on Windows 2008r2) and the virtual drive (vhd) is 30 Gb size. So, 68% used of 30Gb gives 9.6 Gb free space. One ISO backup file size is 4.3 Gb and should not overload the HD. Am I right ?

I'm not a Linux expert. Maybe I misunderstand the disk usage ?

[crythias]

If the backup exceeds the size of a DVD it will not be a good iso

[Eric26]

Are you telling me that OTRS appliance can't create an ISO backup if the size of ISO file exceeds 4.5 Gb ? What a strange limitation...
Database is growing and growing so that ISO backups will be bigger and bigger.

My goal was to perform an ISO backup before and after an OTRS core update. Any solution then ?

[crythias]

What a strange limitation...

File /BACKUP/root/share.iso is larger than 4GiB-1.

Is it truly a strange limitation that it won't allow you to make a disk image that won't fit on a disk?

Alternatively, look at what's necessary during Upgrading. Consider it to be roughly what you'd need for disaster recovery.