slow amanda performance on ONE system.
2003-11-04 01:10:03
Hello - I am making great progress with Amanda; now backing up three
systems. (For some reason, samba backups did not work for me; but
installing the amanda client on our windows server did the trick; I can
backup over that). We have a dedicated machine to do the backups, and it
backs up two unix servers (one Linux one SunOS 5.8), and a windows
machine.
One puzzling thing is that our SunOS system seems to
take a very long time making backups. I started a full backup about 12
hours ago, and it's still running. If I wait long enough, it finishes (I
did it once before), but I would like it to finish in a regular timeframe.
There is no bottleneck as far as I can tell; the machines are mostly
idle; the network connection is 100MB like the other machines. I am not
very good at reading the 'amstatus' output so I thought I would ask for
help from this very helpful group..
[amanda@yedek amanda]$ amstatus home | more
Using /usr/adm/amanda/DailySet1/amdump from Mon Nov 3 23:25:26 EET 2003
home:/etc 0 6296k finished (23:46:28)
home:/usr/local 0 552408k finished (3:32:29)
home:/usr/users 0 1516665k dumping to tape (3:32:29)
home:/var/spool/mail 0 5028910k wait for dumping
SUMMARY part real estimated
size size
partition : 4
estimated : 4 7227450k
flush : 0 0k
failed : 0 0k ( 0.00%)
wait for dumping: 1 5028910k ( 69.58%)
dumping to tape : 1 1516665k ( 20.98%)
dumping : 0 0k 0k ( 0.00%) ( 0.00%)
dumped : 3 2075369k 2198540k ( 94.40%) ( 28.72%)
wait for writing: 0 0k 0k ( 0.00%) ( 0.00%)
wait to flush : 0 0k 0k (100.00%) ( 0.00%)
writing to tape : 0 0k 0k ( 0.00%) ( 0.00%)
failed to tape : 0 0k 0k ( 0.00%) ( 0.00%)
taped : 2 558704k 681875k ( 81.94%) ( 7.73%)
3 dumpers idle : not-idle
taper writing, tapeq: 0
network free kps: 6570
holding space : 0k ( 0.00%)
dumper0 busy : 4:03:57 (100.00%)
taper busy : 4:03:57 (100.00%)
0 dumpers busy : 0:00:00 ( 0.00%)
1 dumper busy : 4:03:57 (100.00%) not-idle: 4:03:57 (100.00%)
I just checked the 'home' system; the one that's being backed up, and it
shows that 'tar' is running, likewise for two 'sendbackup' processes.
The last entry in /tmp/amanda belongs to amandad, and it has not been
updated for about 4 hours. it reads:
CONNECT DATA 921 MESG 922 INDEX 923
OPTIONS features=fffffeff9ffe0f;
----
amandad: time 0.133: got packet:
----
Amanda 2.4 ACK HANDLE 000-A8E80608 SEQ 1067894728
----
amandad: time 0.133: pid 8343 finish time Tue Nov 4 03:29:37 2003
I guess this means that it finished.
PS: I dont have a tape drive define; I backup to disk using the very
useful chg-disk "changer". Therefore I did not define any holding disks.
I'd appreciate any feedback..
Thanks, -turgut
-----
Turgut Kalfaoglu: http://www.kalfaoglu.com
EgeNet Internet Services: http://www.egenet.com.tr
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