I got my first backup jobs running on Bacula, and while they appear to be
working, they are extremely slow. The client is reporting only a 200-600 KB/s
rate.
Automatically selected Client: mort-fd
mort-fd Version: 5.0.2 (28 April 2010) i686-pc-linux-gnu suse 10
Daemon started 12-Aug-10 09:05, 0 Jobs run since started.
Heap: heap=557,056 smbytes=176,711 max_bytes=178,834 bufs=142 max_bufs=143
Sizeof: boffset_t=8 size_t=4 debug=0 trace=0
Running Jobs:
JobId 22 Job DailyNetwork.2010-08-12_09.05.58_04 is running.
Full Backup Job started: 12-Aug-10 09:06
Files=1,250 Bytes=271,511,671 Bytes/sec=386,768 Errors=0
Files Examined=1,250
Processing file: /mnt/Frodo/VOL1/./<Filename removed>
SDReadSeqNo=5 fd=5
Director connected at: 12-Aug-10 09:17
====
The configuration is mostly a default install and backups are being done
directly to file, never to tape. This particular job backs up 3 Novell
eDirectory servers mounted by nwmap and symbolic linked to /mnt/<ServerName>.
Backups get written to /mnt/Herbert which is an NFS mount to our QNAP NAS.
Manual file copies work fine over these network connections with Frodo being a
100 mbps connection, and everything else being 1000 mbps.
I have already attempted removing MD5 and GZIP from the FileSet, as well as
toying with the Maximum Network Buffer Size options on the Storage Daemon's
Device Resource as well as in the FileDaemon's FileDaemon resource. MD5/GZIP
had little or no effect on the speed, and attempting to raise the buffer size
made it go even slower. I've also tried turning on attribute spooling, which
also had no effect on the speed. I'm not sure what else to check.
While the backup is running, network traffic is miniscule (floats between 0 and
30 KB/s) and CPU usage is barely even being touched.
Here's a top printout:
top - 09:46:06 up 1 day, 22:41, 2 users, load average: 0.13, 0.13, 0.11
Tasks: 206 total, 1 running, 205 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.7%us, 1.0%sy, 0.0%ni, 97.0%id, 0.7%wa, 0.3%hi, 0.3%si, 0.0%st
Mem: 1036432k total, 1021356k used, 15076k free, 6068k buffers
Swap: 1052216k total, 1012k used, 1051204k free, 585752k cached
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3639 root 16 0 334m 47m 16m S 0.3 4.7 0:06.18 ndsd
4504 root 15 0 29008 18m 8444 S 0.3 1.9 3:38.55 X
5507 root 16 0 181m 15m 3552 S 0.3 1.6 8:48.26 novfsd
11772 root 16 0 53320 1904 1136 S 0.3 0.2 0:42.03 bacula-fd
And here's a free printout:
total used free shared buffers cached
Mem: 1036432 881028 155404 0 7444 405940
-/+ buffers/cache: 467644 568788
Swap: 1052216 1144 1051072
And finally relevant configuration files for Bacula:
JobDefs {
Name = "DefaultJob"
Type = Backup
Level = Incremental
Client = mort-fd
Schedule = "DailyCycle"
Messages = Standard
Priority = 10
Write Bootstrap = "/root/bacula/bin/working/%c.bsr"
Spool Attributes = yes
}
Job {
Name = "DailyNetwork"
JobDefs = "DefaultJob"
Storage = HerbertStorageDailyNetwork
Pool = DailyNetworkBackupPool
FileSet = "Network Files"
}
FileSet {
Name = "Network Files"
Include {
Options {
signature = MD5
compression = GZIP
}
File = /mnt/Frodo/VOL1/.
File = /mnt/Narya/VOL1/.
File = /mnt/Nenya/VOL1/.
}
}
Storage {
Name = HerbertStorageDailyNetwork
# Do not use "localhost" here
Address = mort # N.B. Use a fully qualified name here
SDPort = 9103
Password = "+0WNXvB6Qz4jOCM5voBbGm4M3FD9JoCZVol4xDit0UW7"
Device = HerbertBackupDailyNetwork
Media Type = HerbertDailyNetworkMedia
}
Pool {
Name = DailyNetworkBackupPool
Pool Type = Backup
Storage = HerbertStorageDailyNetwork
Recycle = yes # Bacula can automatically recycle Volumes
AutoPrune = yes # Prune expired volumes
Volume Retention = 14 days # Two weeks!
Maximum Volume Jobs = 1 # Each job is it's own volume
LabelFormat = "DailyNetworkBackup_$Year-$Month-$Day" # Bacula will
create volume names NetworkBackupXXXX
}
Device {
Name = HerbertBackupDailyNetwork
Media Type = HerbertDailyNetworkMedia
Device Type = File
Archive Device = /mnt/Herbert/Backup/Network/Daily
LabelMedia = yes; # lets Bacula label unlabeled media
Random Access = Yes;
AutomaticMount = yes; # when device opened, read it
RemovableMedia = no;
AlwaysOpen = no;
LabelMedia = yes
}
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