Hi we had one of our mail servers , going on kernel panic mode ( not syncing fatal exception) ... cause /var/queue/postfix was on reiserfs part .. it has not been giving us any isssue quite some time , but yesterday and today it went on Kernel panic mode , when we hashed out the reiserfs part it booted properly .. we formated the part^ on ext3 later and things working fine now . Could any one have a idea why this could have happened . The server hung at 19:52:56 hours Here is the logs ------------------------------------------------------------------ ug 2 19:50:01 mmail2 snmpd[4460]: Connection from UDP: []:53980 Aug 2 19:50:55 mmail kernel: ReiserFS: sda6: warning: vs-13060: reiserfs_update_sd: stat data of object [2 203562 0x0 SD] (nlink == 2) not found (pos 1) Aug 2 19:51:33 mmail last message repeated 2 times Aug 2 19:52:34 mmail last message repeated 12 times Aug 2 19:52:52 mmail kernel: ReiserFS: sda6: warning: vs-13060: reiserfs_update_sd: stat data of object [2 203562 0x0 SD] (nlink == 2) not found (pos 1) Aug 2 19:52:56 mmail kernel: ReiserFS: warning: is_leaf: free space seems wrong: level=1, nr_items=2, free_space=65512 rdkey Aug 2 19:52:56 mmail kernel: ReiserFS: sda6: warning: vs-5150: search_by_key: invalid format found in block 37030. Fsck? Aug 2 19:52:56 mmail kernel: ReiserFS: sda6: warning: vs-13050: reiserfs_update_sd: i/o failure occurred trying to update [2 203562 0x0 SD] stat data Aug 2 20:13:27 mmail syslogd 1.4.1: restart. Aug 2 20:13:27 mmail kernel: klogd 1.4.1, log source = /proc/kmsg started. Aug 2 20:13:27 mmail kernel: Linux version 2.6.18-128.el5 ( mockbuild@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)) #1 SMP Wed Jan 21 10:41:14 EST 2009 Aug 2 20:13:27 mmail kernel: Command line: ro root=LABEL=/1 rhgb quiet Aug 2 20:13:27 mmail kernel: BIOS-provided physical RAM map: Aug 2 20:13:27 mmail kernel: BIOS-e820: 0000000000000000 - 00000000000a0000 (usable) Aug 2 20:13:27 mmail kernel: BIOS-e820: 0000000000100000 - 00000000cfb50000 (usable) Aug 2 20:13:27 mmail kernel: BIOS-e820: 00000000cfb50000 - 00000000cfb66000 (reserved)