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...sdb9 /extra ext3 rw,noatime 0 0 /dev/hda6 /mnt/hda ext3 rw,noatime 0 0 none /dev/pts devpts rw 0 0 All over a sudden I spotted that the pop3d (Courier) wasn't running anymore. I checked and restarted it. /var/log/message showed the authpam (piece belongin to Courier died): ... Dec 5 00:00:07 postamt1 httpd: httpd startup succeeded Dec 5 15:48:35 postamt1 kernel: swap_dup: Bad swap file entry 516a444c Dec 5 15:48:36 postamt1 kernel: swap_dup: Bad swap file entry 7741314a Dec 5 15:48:36 postamt1 kernel: Page has mapping still set. This is a serious situation. However if you Dec 5 15:48:36 pos...

...i! We're using 2.4.15-pre5 on our Postfix mailserver. /etc/fstab: LABEL=/var /var auto data=journal 1 2 LABEL=/home /home auto exec,dev,nosuid,rw 1 2 Recently, we got the following entries in our /var/log/messages: Dec 1 00:42:05 postamt1 kernel: invalidate: busy buffer Dec 1 00:42:05 postamt1 last message repeated 329 times Dec 1 00:45:45 postamt1 kernel: invalidate: busy buffer Dec 1 00:49:37 postamt1 last message repeated 105 times Dec 1 00:49:37 postamt1 last message repeated 230 times Dec 1 00:53:46 postamt1 kernel: invali...

Which disk is it? /dev/sda6 or /dev/sdb8 or /dev/sdc6? >From my log: Jun 10 21:25:39 postamt1 kernel: attempt to access beyond end of device Jun 10 21:25:39 postamt1 kernel: 08:06: rw=0, want=1680353324, limit=59954548 Jun 10 21:25:39 postamt1 kernel: EXT3-fs error (device sd(8,6)): ext3_readdir: directory #3473659 contains a hole at offset 1852399616 $ mount /dev/sdb6 on / type auto (rw)...

I'm lacking some understanding of how to tune / when to tune /proc/sys/vm/bdflush Where can I read up on this? Our current problem: Load is low, but ever so often the system decides to do some serious disk I/O which causes all processes to wait for disk I/O -- load explodes (rises linear up into the 20-30ies) just to fall linearly (spelling?) right after that. We think there might be some