[Bacula-users] create large disk volumes for backup

2012-08-05 Thread d tbsky 
hi:
   I am new to bacula and I plan to use disk file to backup. the full
backup size is about 2TB。

I saw many warnings in the document about using large disk volumes to
backup, because
 with a single Volume, is that until version 2.0.0, Bacula did not seek
within a
disk Volume, so restoring a single file can take more time than one would
expect.

but I also find there is a random access = yes parameter for disk volume
and it seems can do seek.

so I am confused if  it is ok now to use large disk volumes(ex: 2TB or
bigger) with bacula 5.2.10 ?

thanks a lot for help!!

Regards,
tbskyd
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Re: [Bacula-users] create large disk volumes for backup

2012-08-05 Thread Phil Stracchino 
On 08/05/12 05:57, d tbsky wrote:
 hi:
I am new to bacula and I plan to use disk file to backup. the full
 backup size is about 2TB。
 
 I saw many warnings in the document about using large disk volumes to
 backup, because
  with a single Volume, is that until version 2.0.0, Bacula did not seek
 within a
 disk Volume, so restoring a single file can take more time than one would
 expect.
 
 but I also find there is a random access = yes parameter for disk
 volume and it seems can do seek.
 
 so I am confused if  it is ok now to use large disk volumes(ex: 2TB or
 bigger) with bacula 5.2.10 ?


First of all note that 5.2.10 is a considerably more recent version than
2.0.0, and does nut therefore fall under until 2.0.0.  :)  This should
answer your question...


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Re: [Bacula-users] create large disk volumes for backup

2012-08-05 Thread John Drescher 
 First of all note that 5.2.10 is a considerably more recent version than
 2.0.0, and does nut therefore fall under until 2.0.0.  :)  This should
 answer your question...


I agree been quite a few years of development from bacula-2.0.0 which
was released in January of 2007.

Although I stay away from large volumes for recycling purposes.

John

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Re: [Bacula-users] bacula confused about volumes

2012-08-05 Thread Stephen Thompson 


We're seeing this with a lot more frequency, though we've changed no 
configuration.  Jobs are often left waiting an entire run in order to 
use a volume that's in use by the other drive within a 2 drive changer.

Stephen



On 7/25/12 7:38 AM, Stephen Thompson wrote:

 Hey all,

 I've been meaning to post about this for awhile, but it comes up pretty
 rarely (maybe once every few months running hundreds of job a night).

 With an autochanger with 2 drives, each set to AutoSelect, it's possible
 for bacula to want the same volume in both drives at the same time,
 which creates an Operator Intervention situation.

 Here's an example where apparently previous jobs were using a particular
 volume in one drive and somehow jobs assigned to the other drives wanted
 the exact same volume, causing them to pause and require operator
 intervention.


 sd_C4 Version: 5.2.10 (28 June 2012) x86_64-unknown-linux-gnu redhat
 Enterprise release
 Daemon started 23-Jul-12 10:13. Jobs: run=295, running=3.
Heap: heap=135,168 smbytes=2,089,365 max_bytes=3,689,580 bufs=299
 max_bufs=396
Sizes: boffset_t=8 size_t=8 int32_t=4 int64_t=8 mode=0,0

 Running Jobs:
 Writing: Incremental Backup job AAA JobId=247971 Volume=IM0081
   pool=Incremental-Pool device=C4-Drive-0 (/dev/C4-Drive-0)
   spooling=0 despooling=0 despool_wait=0
   Files=0 Bytes=0 Bytes/sec=0
   FDReadSeqNo=6 in_msg=6 out_msg=4 fd=9
 Writing: Incremental Backup job BBB JobId=247973 Volume=IM0081
   pool=Incremental-Pool device=C4-Drive-0 (/dev/C4-Drive-0)
   spooling=0 despooling=0 despool_wait=0
   Files=0 Bytes=0 Bytes/sec=0
   FDReadSeqNo=6 in_msg=6 out_msg=4 fd=13
 Writing: Incremental Backup job CCC JobId=247975 Volume=IM0081
   pool=Incremental-Pool device=C4-Drive-0 (/dev/C4-Drive-0)
   spooling=0 despooling=0 despool_wait=0
   Files=0 Bytes=0 Bytes/sec=0
   FDReadSeqNo=6 in_msg=6 out_msg=4 fd=15
 Writing: Incremental Backup job DDD JobId=247976 Volume=IM0081
   pool=Incremental-Pool device=C4-Drive-0 (/dev/C4-Drive-0)
   spooling=0 despooling=0 despool_wait=0
   Files=0 Bytes=0 Bytes/sec=0
   FDReadSeqNo=6 in_msg=6 out_msg=4 fd=18
 

 Jobs waiting to reserve a drive:
 

 Terminated Jobs:
JobId  LevelFiles  Bytes   Status   FinishedName
 ===
 XXX
 

 Device status:
 Autochanger C4-changer with devices:
  C4-Drive-0 (/dev/C4-Drive-0)
  C4-Drive-1 (/dev/C4-Drive-1)
 Device C4-Drive-0 (/dev/C4-Drive-0) is not open.
   Device is BLOCKED waiting for mount of volume IM0081,
  Pool:Incremental-Pool
  Media type:  LTO-3
   Drive 0 is not loaded.
 Device C4-Drive-1 (/dev/C4-Drive-1) is mounted with:
   Volume:  IM0081
   Pool:Incremental-Pool
   Media type:  LTO-3
   Slot 32 is loaded in drive 1.
   Total Bytes=369,270,534,144 Blocks=1,408,808 Bytes/block=262,115
   Positioned at File=203 Block=0
 

 Used Volume status:
 IM0070 on device C4-Drive-1 (/dev/C4-Drive-1)
   Reader=0 writers=0 devres=0 volinuse=0
 IM0081 on device C4-Drive-0 (/dev/C4-Drive-0)
   Reader=0 writers=0 devres=4 volinuse=0
 



 Anyone else have this happen?
 Race condition?

 thanks,
 Stephen


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