I've been having unexplained lockups on my Ubuntu 7.10 (2.6.22-14-server) implementation for some months, the symtom is a complete crash requiring a power cycle to recover the system: power and rest buttons on the server don't respond, needs a switch off/on at the mains. Server is a (don't laugh !) Pentium III 500MHz dual-CPU with 1Gb RAM, 2x300Gb Seagate Barracuda ATA (IDE) disks.
Coincidentally on checking /var/log/messages today I found the info below, and subsequent search turned up this bug report. Thought I'd post in case it's of any use. ... Apr 5 23:25:25 karanda -- MARK -- Apr 5 23:45:25 karanda -- MARK -- Apr 6 00:05:25 karanda -- MARK -- Apr 6 00:25:26 karanda -- MARK -- Apr 6 00:45:26 karanda -- MARK -- Apr 6 01:05:27 karanda -- MARK -- Apr 6 01:06:02 karanda kernel: [231760.863936] md: data-check of RAID array md0 Apr 6 01:06:02 karanda kernel: [231760.863971] md: minimum _guaranteed_ speed: 1000 KB/sec/disk. Apr 6 01:06:02 karanda kernel: [231760.863983] md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for data-check. Apr 6 01:06:02 karanda kernel: [231760.864004] md: using 128k window, over a total of 51199040 blocks. Apr 6 01:06:02 karanda kernel: [231760.882873] md: delaying data-check of md1 until md0 has finished (they share one or more physical units) Apr 6 01:06:02 karanda kernel: [231760.911406] md: delaying data-check of md2 until md0 has finished (they share one or more physical units) Apr 6 01:06:02 karanda kernel: [231760.911443] md: delaying data-check of md1 until md0 has finished (they share one or more physical units) Apr 6 19:48:04 karanda syslogd 1.4.1#21ubuntu3: restart. -- RAID1 data-checks cause CPU soft lockups https://bugs.launchpad.net/bugs/212684 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
