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Re: [Linux-cluster] gfs1 and 2.6.20



Asbjørn Sannes wrote:
> I have been trying to use the STABLE branch of the cluster suite with
> vanilla 2.6.20 kernel, and everything seemed at first to work, my
> problem can be reproduced by this:
>
> mount a gfs filesystem anywhere..
> do a sync, this sync will now just hang there ..
>
> If I unmount the filesystem in another terminal, the sync command will
> end..
>
> .. dumping the kernel stack of sync shows that it is in __sync_inodes on
> __down_read, looking in the code it seems that is waiting for the
> s_umount semaphore (in the superblock)..
>
> Just tell me if you need any more information or if this is not the
> correct place for this..
>   
Here is the trace for sync (while hanging) ..

sync          D ffffffff8062eb80     0 17843  15013                    
(NOTLB)
ffff810071689e98 0000000000000082 ffff810071689eb8 ffffffff8024d210
0000000071689e18 0000000000000000 0000000100000000 ffff81007b670fe0
ffff81007b6711b8 00000000000004c8 ffff810037c84770 0000000000000001
Call Trace:
[<ffffffff8024d210>] wait_on_page_writeback_range+0xed/0x140
[<ffffffff8046046c>] __down_read+0x90/0xaa
[<ffffffff802407d6>] down_read+0x16/0x1a
[<ffffffff8028df35>] __sync_inodes+0x5f/0xbb
[<ffffffff8028dfa7>] sync_inodes+0x16/0x2f
[<ffffffff80290293>] do_sync+0x17/0x60
[<ffffffff802902ea>] sys_sync+0xe/0x12
[<ffffffff802098be>] system_call+0x7e/0x83

Greetings,
Asbjørn Sannes


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