<html><head> <link media="all" type="text/css" href="/webmail/static/deg/css/wysiwyg-3933289048.css" rel="stylesheet"> </head><body> Ted, There are not OOPS messages. The kernel is provided by the CPU vendor. From what I know - the Ext3 code has not been modified. At the moment I do not have list of modifications the vendor made, and not sure I will be able to get such list. I have the source code so probably I can compare with the stock kernel and see what has been changed. Upgrading the kernel to 2.6.29 will be difficult. Will it be possible to upgrade / patch the Ext3 code only? Will that work? I will try with LOCKDEP and see what happens. Thanks a lot. Dimitar Apr 14, 2009 09:16:22 AM, <a href="mailto:tytso@mit.edu" class="parsedEmail" target="_blank">tytso@mit.edu</a> wrote: <blockquote style="border-left: 3px solid rgb(102, 153, 204);">On Tue, Apr 14, 2009 at 07:06:58AM -0500, <a href="mailto:dkg_004@verizon.net" target="_blank" class="parsedEmail parsedEmail">dkg_004@verizon.net</a> wrote: >kjournald D C0284784 0 408 6 (L-TLB) >[<c0284240>] (schedule+0x0/0x64c) from [<c00f8724>] (journal_commit_transaction+0x16c/0x1568) >[<c00f85b8>] (journal_commit_transaction+0x0/0x1568) from [<c00fd99c>] (kjournald+0xbc/0x260) >[<c00fd8e0>] (kjournald+0x0/0x260) from [<c0070d9c>] (kthread+0xe8/0x128) >[<c0070cb4>] (kthread+0x0/0x128) from [<c005d980>] (do_exit+0x0/0x8c8) Are you using any other patches or modifications to the kernel? It looks like the journal_commit_transaction() is blocked waiting for some transaction to finish: while (commit_transaction->t_updates) { DEFINE_WAIT(wait); prepare_to_wait(&journal->j_wait_updates, &wait, TASK_UNINTERRUPTIBLE); if (commit_transaction->t_updates) { spin_unlock(&commit_transaction->t_handle_lock); spin_unlock(&journal->j_state_lock); schedule(); <------------ spin_lock(&journal->j_state_lock); spin_lock(&commit_transaction->t_handle_lock); } finish_wait(&journal->j_wait_updates, &wait); } This can happen if the kernel has OOPS'ed while in the middle of an ext3 operation, or if there is some bug in ext3. The 2.6.21 kernel is quite old, so there are one or two bug fixes that might possibly apply to your problem. So the first easy thing to tryy would be to upgrade to the latest kernel (2.6.29) and see if that fixes your problem. You might also check your logs to see if there were any OOPS messages before the system locked up. And, I would try compiling with LOCKDEP enabled to see if that shows the problem. - Ted </c005d980></c0070cb4></c0070d9c></c00fd8e0></c00fd99c></c00f85b8></c00f8724></c0284240></blockquote></body></html>