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 _______________________________________________ Ocfs2-users mailing list Ocfs2-users@oss.oracle.com https://oss.oracle.com/mailman/listinfo/ocfs2-users
