On 03/07/06, Alessio Cecchi <acecchi at telemaco.it> wrote: > I have installed two CentOS 4.3 boxes with LVS (from > http://mirror.centos.org/centos/4/csgfs/ ) but all boxes died withe this > error frequently: > > kernel panic - not syncing: fs/block_dev.c:396: spin_lock > (fs/block_dev.c:c0361c0) already locked by fs/block_dev.c/287. > > I have read from this thread http://threebit.net/mail-archive/centos/msg00243.html that this is an unsolved problem. > > So i have installed the kernel-2.6.9-39.EL from testing repo, but the box diedi with another error: > Johnny recommended installing kernel-2.6.9-34.19 from the CentOS Testing repository, it resolves a bunch of the spinlock errors. NB: it's a testing kernel and I was warned accordingly. :) > Jul 2 16:40:40 lvs2 kernel: Bad page state at free_hot_cold_page (in process 'smtp', page c10a2140) > Jul 2 16:40:40 lvs2 kernel: flags:0x20000014 mapping:00000000 mapcount:256 count:0 > Jul 2 16:40:40 lvs2 kernel: Backtrace: > > So LVS is unusable because after of no more hourse of running the kernel go to panic. > If you're already running kernel-2.6.9-34.19 and not kernel-2.6.9-39.EL as you've stated above, I had problems getting kernel-2.6.9-34.19 to boot on certain hardware. IBM eServer e300s to be specific. http://lists.centos.org/pipermail/centos/2006-May/064305.html We switched all LVS boxes to Dell 1650s running kernel-2.6.9-34.19 a few months back and haven't had any panics since (touch wood). Will.