Hi all,
Thanks very much for the replies. It didn't occur to me to check
hardware compression.
One comment to make, though - I am using a holding disk, and currently
it's free space is greater than the amount of data being backed up, so
does this log look like something's going screwy there too?
Many thanks,
Mark Lidstone
IT and Network Support Administrator
BMT SeaTech Ltd
Grove House, Meridians Cross, 7 Ocean Way
Ocean Village, Southampton. SO14 3TJ. UK
Tel: +44 (0)23 8063 5122
Fax: +44 (0)23 8063 5144
E-Mail: mailto:mark.lidstone AT bmtseatech.co DOT uk
Website: www.bmtseatech.co.uk
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-----Original Message-----
From: Paul Bijnens [mailto:paul.bijnens AT xplanation DOT com]
Sent: 14 March 2005 14:46
To: Mark Lidstone
Cc: amanda-users AT amanda DOT org
Subject: Re: 20Gb tape not full
Mark Lidstone wrote:
>
>>These dumps were to tape Haslar12.
>>*** A TAPE ERROR OCCURRED: [[writing file: No space left on device]].
[...]
>>
>>USAGE BY TAPE:
>> Label Time Size % Nb
>> Haslar12 1:10 5208.7 27.0 4
[...]
>>
>>NOTES:
>> taper: tape Haslar12 kb 16875296 fm 5 writing file: No space left on
>>device
...
>
> Now, if I'm reading this right, it's saying that it's hit the end of a
> 20Gb tape at around the 5Gb mark.
No, you're not reading this right. 5 Gbyte of dumps for 4 DLE's were
successfully written to tape. While writing the fifth DLE, amanda hit
EOT at 16875296 Kbyte (or about 16 Gbyte).
A few comments.
The report says:
> olympic /samba/company lev 0 FAILED [dump to tape failed]
That means that you were not using a holdingdisk for this DLE. Maybe
it's too small? It helps a lot in having a large holdingdisk. Unless
you have really fast hardware and network, the tapedrive must
constantly stop/rewind-a-little/restart again. Besides the fact that
this slows down the whole process enormously, this is also a fast and
proven way to wear the tapedrive in a few weeks!
> tapetype HP-DDS-4
>
> define tapetype HP-DDS-4 {
> comment "just produced by tapetype prog (hardware compression
on)"
> length 17021 mbytes
> filemark 403 kbytes
> speed 1578 kps
> }
You seem to be using hardware + software compression at the same time.
This is a waste of tapecapacity, and a wast of time, and a wast of cpu.
Put your tapedrive in hardware compression off, and you'll gain almost 4
Gbyte in capacity!
> I'm wondering about a faulty tape drive or tapes?
If you keep bypassing the holdingdisk, that answer
will be "yes" in a few weeks. But currently is it "no".
>>olympic /home 0 90793005319769 58.6 69:241277.4
69:251277.4
This reads much clearer if you add some whitespace between the columns.
Search the man page about "columnspec". I have this line in my
amanda.conf (all on one very long line):
columnspec
"HostName=0:9,Disk=1:18,Level=1:1,OrigKB=1:8,OutKB=1:7,Compress=1:5,Dump
Time=1:6,DumpRate=1:6,TapeTime=1:6,TapeRate=1:6"
--
Paul Bijnens, Xplanation Tel +32 16 397.511
Technologielaan 21 bus 2, B-3001 Leuven, BELGIUM Fax +32 16 397.512
http://www.xplanation.com/ email: Paul.Bijnens AT xplanation DOT com
***********************************************************************
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