I recently found out that I had a bad tape drive.
With the tape in the drive run the following and see if it says there
are errors:
smartctl -a /dev/nst0
If there are errors, it's wasting tape and hence less capacity.
Stephen
On 10/17/2012 11:14 AM, Sergio Belkin wrote:
> Hi folks
>
> I'm using LTO3 tapes and are filling up too fast. They have supposedly
> 800 GB. I know that never reach that capacity, but I am somewhat
> surprised that is full with only ~ 333 GB!! (lesser than a half)
>
>
> If I issue a "list media pool" command I get
>
> | MediaId | VolumeName | VolStatus | Enabled | VolBytes |
> VolFiles | VolRetention | Recycle | Slot | InChanger | MediaType |
> LastWritten |
> +---------+--------------+-----------+---------+-----------------+----------+--------------+---------+------+-----------+-----------+---------------------+
> | 100 | LUNOCT12LTO3 | Full | 1 | 421,590,177,792 |
> 431 | 31,536,000 | 0 | 0 | 0 | LTO3 |
> 2012-10-16 08:11:08 |
>
>
> Output of mt -f /dev/nst0 status
>
> SCSI 2 tape drive:
> File number=0, block number=0, partition=0.
> Tape block size 0 bytes. Density code 0x44 (no translation).
> Soft error count since last status=0
> General status bits on (41010000):
> BOT ONLINE IM_REP_EN
>
> The volume was recycled with 'mt -f /dev/nst0 rewind;mt -f /dev/nst0 weof'
>
> My storage daemon config is as follow
>
> Storage { # definition of myself
> Name = superbackup-sd
> SDPort = 9103 # Director's port
> WorkingDirectory = "/var/bacula/working"
> Pid Directory = "/var/run"
> Maximum Concurrent Jobs = 20
>
> }
> Director {
> Name = superbackup-dir
> Password = "ucuc"
> }
> Director {
> Name = superbackup-mon
> Password = "ucuc"
> Monitor = yes
> }
> Device {
> Name = LTO3
> Media Type = LTO3
> Archive Device = /dev/nst0 #modificar a "1" para usar el DAT4S
> AutomaticMount = yes; # when device opened, read it
> AlwaysOpen = yes;
> RemovableMedia = yes;
> Maximum Spool Size = 30g
> Maximum Job Spool Size = 20gb
> Spool Directory = /var/spool/bacula
> #Maximum Network Buffer Size = 10240
> #Hardware end of medium = No;
> Fast Forward Space File = yes
> #TWO EOF = yes
> }
>
> Messages {
> Name = Standard
> director = supernoc-dir = all
> }
> You have new mail in /var/spool/mail/root
>
>
> Could you suggest me something to improve it?
>
> Thanks in advance!
>
--
Stephen Thompson Berkeley Seismological Laboratory
step...@seismo.berkeley.edu 215 McCone Hall # 4760
404.538.7077 (phone) University of California, Berkeley
510.643.5811 (fax) Berkeley, CA 94720-4760
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