looks like I got hit by this: https://oss.oracle.com/pipermail/ocfs2-users/2011-April/005106.html
guess I'll cancel that fsck and upgrade after all :P On Wed, Jul 4, 2012 at 4:38 AM, Aleks Clark <aleks.cl...@gmail.com> wrote: > I'll try that kernel upgrade while I've got the cluster down. Has > anyone given any thought to multi-threading fsck.ocfs2? From my top > stats, it's clearly CPU-bound (also going on 5 hours, still haven't > seen the end of the first pass). > > On Tue, Jul 3, 2012 at 11:50 PM, Guozhonghua <guozhong...@h3c.com> wrote: >> Hi, >> >> I had used the ocfs2 with Linux kernel 2.6.39, there are some problems may >>be same with you. >> >> I download the Linux kernel 3.2.X, and compare the source code with >>2.6.39, and find so many codes changed. >> So as to update the kernel and the problems disappeared. >> >> I recommend you update the kernel to recent, may be very stable. >> I used the recent kernel and the ocfs2 module is very stable and it had >>run for several weeks without reboot, panic. >> >> Another note, you will set the I/O schedule method with deadline, and it >>will be fitful for ocfs2. >> >> elevator=deadline >> >> Please prefer the ocfs2_faq.txt for details: >> >> Q07 I encounter "Kernel panic - not syncing: ocfs2 is very sorry to be >>fencing this system by panicing" whenever I run a heavy io >> load? A07 We have encountered a bug with the default "cfq" io >>scheduler which causes a process doing heavy io to temporarily starve out >> other processes. While this is not fatal for most environments, >> it is for OCFS2 as we expect the hb thread to be r/w to the hb >> area atleast once every 12 secs (default). >> Bug with the fix has been filed with Red Hat and Novell. For >> more, refer to the tracker bug filed on bugzilla: >> http://oss.oracle.com/bugzilla/show_bug.cgi?id=671 >> Till this issue is resolved, one is advised to use the >> "deadline" io scheduler. To use deadline, add "elevator=deadline" >> to the kernel command line as follows: >> 1. For SLES9, edit the command line in /boot/grub/menu.lst. >> title Linux 2.6.5-7.244-bigsmp elevator=deadline kernel >>(hd0,4)/boot/vmlinuz-2.6.5-7.244-bigsmp root=/dev/sda5 vga=0x314 selinux=0 >>splash=silent resume=/dev/sda3 >> elevator=deadline showopts console=tty0 >> console=ttyS0,115200 noexec=off initrd >>(hd0,4)/boot/initrd-2.6.5-7.244-bigsmp >> 2. For RHEL4, edit the command line in /boot/grub/grub.conf: >> title Red Hat Enterprise Linux AS (2.6.9-22.EL) root (hd0,0) >> kernel /vmlinuz-2.6.9-22.EL ro root=LABEL=/ >>console=ttyS0,115200 console=tty0 elevator=deadline noexec=off initrd >>/initrd-2.6.9-22.EL.img >> To see the current kernel command line, do: >> # cat /proc/cmdline >>============================================================================== >> ------------------------------------------------------------------------------------------------------------------------------------- >> 本邮件及其附件含有杭州华三通信技术有限公司的保密信息，仅限于发送给上面地址中列出 >> 的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、 >> 或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本 >> 邮件！ >> This e-mail and its attachments contain confidential information from H3C, >> which is >> intended only for the person or entity whose address is listed above. Any >> use of the >> information contained herein in any way (including, but not limited to, >> total or partial >> disclosure, reproduction, or dissemination) by persons other than the >> intended >> recipient(s) is prohibited. If you receive this e-mail in error, please >> notify the sender >> by phone or email immediately and delete it! > > > > -- > Aleks Clark -- Aleks Clark _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-users
