[ts-7000] Re: File system lockup issue on 7800?

["charliem_1216" <>]

Hi Robert --

--- In  "Robert" <> wrote:

> I am experiencing a lockup after several hours of running the board
> with our application. By lockup, I mean, cannot login through console,
> ssh, does not respond to our TCP client app. I have a script which
> runs once a minute and logs out several performance indicators (mem
> usage, cpu, open file handles, context switch delta, file system
> usage, etc.).

Yes, this has been reported a few times on this list.  One app was
almost identical to yours, and was traced to a JFS bug.  The lockup
went away when the SD card used ext2, ext3 or FAT instead of JFS.  (If
you don't use JFS, you can stop reading here :)

A fix went upstream in kernel 2.6.22, but I don't know if it ever made
it into the TS 2.6.21 kernel.  Perhaps you can check and report back?

See the thread starting here: 
http://tech.groups.yahoo.com/group/ts-7000/message/11881
(In particular messages 12027 and 12180)

Below is the patch:
http://git.kernel.org/gitweb.cgi?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=05ec9e26be1f668ccba4ca54d9a4966c6208c611

diff --git a/fs/jfs/jfs_logmgr.c b/fs/jfs/jfs_logmgr.c
index ff7f1be..16c6268 100644 (file)
--- a/fs/jfs/jfs_logmgr.c
+++ b/fs/jfs/jfs_logmgr.c
@@ -2354,12 +2354,13 @@ int jfsIOWait(void *arg)
                        lbmStartIO(bp);
                        spin_lock_irq(&log_redrive_lock);
                }
-               spin_unlock_irq(&log_redrive_lock);
 
                if (freezing(current)) {
+                       spin_unlock_irq(&log_redrive_lock);
                        refrigerator();
                } else {
                        set_current_state(TASK_INTERRUPTIBLE);
+                       spin_unlock_irq(&log_redrive_lock);
                        schedule();
                        __set_current_state(TASK_RUNNING);
                }


regards, .......... Charlie


> 
> Thanks!
> Rob
>



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