Hi
I have a client running FC6 with an HP StorageWorks DAT72 USB internal
tape drive which according to the documentation can do 36G native and up
to 72G compressed. We are trying to use Amanda to just back up the
server so it is configured as both server and client.
We ran amtapetype on it which suggested a tape size of around 32GB.
amcheck runs fine thus:
> su amandabackup -c "amcheck DailySet1"
> Amanda Tape Server Host Check
> -----------------------------
> Holding disk /dumps/amanda: 168963360 KB disk space available, using
158477600 KB
> read label `DailySet1-03', date `20080214'
> cannot overwrite active tape DailySet1-03
> (expecting a new tape)
> Server check took 3.853 seconds
>
> Amanda Backup Client Hosts Check
> --------------------------------
> Client check: 1 host checked in 0.255 seconds, 0 problems found
(This is obviously before the tape was changed today)
When we run amanda, it complained abot the size of the backup versus the
length of the tape.
Thinking that this was due to the tape length, I thought that I would
cheat and increased the tape size in amanda.conf to 72GB and told amanda
to use root-tar (i.e. no compression) allowing the tape drive to look
after the compression. This made no difference at all.
>
> Hostname: mail.xxxx.com.au
> Org : DailySet1
> Config : DailySet1
> Date : February 14, 2008
>
> These dumps were to tape DailySet1-03.
> The next tape Amanda expects to use is: a new tape.
> The next new tape already labelled is: DailySet1-04.
>
> FAILURE AND STRANGE DUMP SUMMARY:
> mail.xxxx.com.au mapper/VolGroup00-LogVol00 lev 0 FAILED [dump
larger than available tape space, 53330360 KB, but cannot incremental
dump new disk]
The disklist looks like this:
> mail.xxxx.com.au mapper/VolGroup00-LogVol00 high-tar
> mail.xxxx.com.au sda1 high-tar
and current disk usage is:
> Filesystem Size Used Avail Use% Mounted on
> /dev/mapper/VolGroup00-LogVol00
> 225G 52G 162G 25% /
> /dev/sda1 99M 11M 83M 12% /boot
> tmpfs 252M 0 252M 0% /dev/shm
I'm obviously missing something here - I understood that amanda would
take the compression into consideration. Should I be using software
compression or hardware? If software, how do I turn of compression on
the tape device?
Can anyone shed any light on this scenario for me please?
TIA
Rgds
Nigel.
