[CentOS] my centos switched alone its root fs to read-only

Mon Mar 31 20:39:56 UTC 2008
Alain Spineux <aspineux at gmail.com>

My test server was in very eavy load, running kolab's components:
postfix, cyrus-imap and openldap
A second test machine was sending, and reading emails as fast as it can.
The CPU was never idle !
I left the server at about 17H30
and at 22H I find it "uncommitted" (difficult to work when the
partition in read-only !)
However the mount command report it as RW !
The /boot is still RW for real indeed.

some more info

[root at c700 trunk]# touch /foo.bar
touch: cannot touch `/foo.bar': Read-only file system
[root at c700 trunk]# mount
/dev/md1 on / type ext3 (rw)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
devpts on /dev/pts type devpts (rw,gid=5,mode=620)
/dev/md0 on /boot type ext3 (rw)
tmpfs on /dev/shm type tmpfs (rw)
none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)
sunrpc on /var/lib/nfs/rpc_pipefs type rpc_pipefs (rw)
max:/s0 on /s0 type nfs (rw,addr=192.168.*.*)
[root at c700 trunk]# cat /var/log/messages
Mar 30 04:02:13 c700 syslogd 1.4.1: restart.
Mar 30 05:47:29 c700 restorecond: Will not restore a file with more
than one hard link (/etc/resolv.conf) Invalid argument
Mar 31 07:41:37 c700 restorecond: Will not restore a file with more
than one hard link (/etc/resolv.conf) Invalid argument
[root at c700 trunk]# date
Mon Mar 31 22:14:02 CEST 2008
[root at c700 log]# df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/md1              18316104   3921164  13449520  23% /
/dev/md0                101018     11076     84726  12% /boot
tmpfs                   257756         0    257756   0% /dev/shm
max:/s0              425343328 389031904  14705248  97% /s0

Any idea ?

The system is still up and running until I need to carry on my test further.

Regards.

-- 
Alain Spineux
aspineux gmail com
May the sources be with you