I'm only seeing around 2MB/s write speed to tape. I have read all about
spooling the data, etc. I would expect this to be an issue if I was complaining
about getting 18-25 MB/s instead of 90-100MB/s maybe? Anyways, I simply cannot
understand why a single job runs at 2 MB/s and 3 jobs will run about 2.5MB/s
total. See output below (all servers in the same rack/switch running at the
same time):
Writing: Full Backup job MSSERVER2 JobId=24 Volume="BAL_01"
pool="Default" device="AIT-4" (/dev/nst0)
spooling=0 despooling=0 despool_wait=0
Files=18,121 Bytes=9,726,633,719 Bytes/sec=1,008,254
FDReadSeqNo=305,615 in_msg=251883 out_msg=5 fd=6
Writing: Full Backup job TS JobId=25 Volume="BAL_01"
pool="Default" device="AIT-4" (/dev/nst0)
spooling=0 despooling=0 despool_wait=0
Files=20,896 Bytes=5,088,180,026 Bytes/sec=691,234
FDReadSeqNo=256,355 in_msg=195224 out_msg=5 fd=8
Writing: Full Backup job BALDC1 JobId=26 Volume="BAL_01"
pool="Default" device="AIT-4" (/dev/nst0)
spooling=0 despooling=0 despool_wait=0
Files=39,608 Bytes=4,514,041,685 Bytes/sec=658,503
FDReadSeqNo=411,027 in_msg=295248 out_msg=5 fd=10
Here is the output of backing up the bacula server itself (this proves spooling
would not help me, right?):
Build OS: i686-pc-linux-gnu redhat
JobId: 12
Backup Level: Full (upgraded from Incremental)
Client: "bacula-fd" 5.2.6 (21Feb12) i686-pc-linux-gnu,redhat,
FileSet: "Full Set" 2012-12-17 11:24:20
Pool: "Default" (From Job resource)
Catalog: "MyCatalog" (From Client resource)
Storage: "SONY" (From command line)
Scheduled time: 17-Dec-2012 11:24:18
Start time: 17-Dec-2012 11:24:22
End time: 17-Dec-2012 12:34:46
Elapsed time: 1 hour 10 mins 24 secs
Priority: 10
FD Files Written: 118,347
SD Files Written: 118,347
FD Bytes Written: 8,199,458,340 (8.199 GB)
SD Bytes Written: 8,215,432,405 (8.215 GB)
Rate: 1941.2 KB/s
Software Compression: None
VSS: no
Encryption: no
Accurate: no
Volume name(s): BAL_01
Volume Session Id: 1
Volume Session Time: 1355761332
Last Volume Bytes: 8,225,667,072 (8.225 GB)
Non-fatal FD errors: 0
SD Errors: 0
FD termination status: OK
SD termination status: OK
Termination: Backup OK
Begin pruning Jobs older than 6 months .
No Jobs found to prune.
Begin pruning Files.
No Files found to prune.
End auto prune.
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