Amanda-Users

VERY high load on server

2004-01-07 13:22:52
Subject: VERY high load on server
From: Mike Heller <mike AT dsny DOT com>
To: amanda-users AT amanda DOT org
Date: Wed, 07 Jan 2004 10:21:49 -0800
I have amanda running on serveral servers and last night I tried to back up one more to the tape server. When I arrived this morning, the backups were still running and the new server had an extremely high load on it. It's a RedHat Linux 9.0 server and the load was over 520 (quad Xeon system). There were about 1500 processes with "amanda" as the user, some are listed below:

amanda    4030  4028  3 01:03 ?        00:17:00 /sbin/restore -tvf -
amanda 4031 4028 0 01:03 ? 00:01:47 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4046 1 0 01:05 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4048  4046  3 01:05 ?        00:18:16 /sbin/restore -tvf -
amanda 4049 4046 0 01:05 ? 00:01:56 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4057 1 0 01:05 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4059  4057  3 01:05 ?        00:17:47 /sbin/restore -tvf -
amanda 4060 4057 0 01:05 ? 00:01:53 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4077 1 0 01:06 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4079  4077  3 01:06 ?        00:16:05 /sbin/restore -tvf -
amanda 4080 4077 0 01:06 ? 00:01:42 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4107 1 0 01:08 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4108  4107  3 01:08 ?        00:14:35 /sbin/restore -tvf -
amanda 4114 4107 0 01:08 ? 00:01:34 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4121 1 0 01:09 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4123  4121  3 01:09 ?        00:14:04 /sbin/restore -tvf -
amanda 4128 4121 0 01:09 ? 00:01:32 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4134 1 0 01:09 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4136  4134  2 01:09 ?        00:13:13 /sbin/restore -tvf -
amanda 4137 4134 0 01:09 ? 00:01:24 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4145 1 0 01:09 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4147  4145  2 01:09 ?        00:12:26 /sbin/restore -tvf -
amanda 4150 4145 0 01:09 ? 00:01:19 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4169 1 0 01:11 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4170  4169  2 01:11 ?        00:13:14 /sbin/restore -tvf -
amanda 4172 4169 0 01:11 ? 00:01:25 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4181 1 0 01:11 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4186  4181  2 01:11 ?        00:11:49 /sbin/restore -tvf -
amanda 4187 4181 0 01:11 ? 00:01:15 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4210 1 0 01:12 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4212  4210  2 01:12 ?        00:11:08 /sbin/restore -tvf -
amanda 4213 4210 0 01:12 ? 00:01:09 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4227 1 0 01:14 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4228  4227  2 01:14 ?        00:12:04 /sbin/restore -tvf -
amanda 4229 4227 0 01:14 ? 00:01:19 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4239 1 0 01:14 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4241  4239  2 01:14 ?        00:12:08 /sbin/restore -tvf -
amanda 4242 4239 0 01:14 ? 00:01:17 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\ amanda 4259 1 0 01:15 ? 00:00:00 sh -c /sbin/restore -tvf - 2>&1
amanda    4260  4259  2 01:15 ?        00:11:56 /sbin/restore -tvf -
amanda 4262 4259 0 01:15 ? 00:01:16 sed -e ?s/^leaf[ ?]*[0-9]*[ ?]*\

That is only a small sample. I have not seen this on any other server before and I'm not sure what is causing it. Tonight I'm going to try and backup another directory from that server that is less than 10 MB in size to see if it completes without problems.

Can anyone tell me what may be happening? Would filling the tape on the tape server cause this?

Any help appreciated,
Mike

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