On Wed, 19 Aug 2009, Wen,Zhang wrote:
> Hi all,
> I write on one client but sometimes cannot read correctly on another.
> e.g,i write "hi\n" to a file,but read "hi\nhi\nhi\n...".

Are you using v0.12, or the latest from git?  (This should be fixed in the 
'unstable' branch.)

> And another problem is I always get kernel panic when i run iozone on
> client.

I'll take a look, thanks!
sage



> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121] ------------[ cut here ]------------
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121] invalid opcode: 0000 [#1] SMP 
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121] Process ceph-msgr/0 (pid: 2353, ti=f7844000
> task=f7739200 task.ti=f7844000)
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121] Stack: 00000008 f8f68f75 c3014ddc c3014ddc
> 00000000 f7845f6c 00000000 f7843b3c 
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]        f7843a08 f7843a58 f7843b38 f7843a4c
> f7843aa1 f7843a6c f7843a8a f7843b30 
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]        f7843ad0 f7843a1c f7843a50 00000000
> 00000000 00000000 00000000 ffffffff 
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121] Call Trace:
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<f8f68f75>] con_work+0xcb8/0x172d [ceph]
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<c011f134>] hrtick_set+0x7b/0xe6
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<c02bba02>] schedule+0x6f3/0x735
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<f8f682bd>] con_work+0x0/0x172d [ceph]
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<c012fc34>] run_workqueue+0x73/0xed
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<c012fd65>] worker_thread+0xb7/0xc3
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574121]  [<c013281e>] autoremove_wake_function+0x0/0x2d
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183]  [<c012fcae>] worker_thread+0x0/0xc3
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183]  [<c01325ba>] kthread+0x38/0x5d
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183]  [<c0132582>] kthread+0x0/0x5d
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183]  [<c0104593>] kernel_thread_helper+0x7/0x10
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183]  =======================
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183] Code: 2d 00 20 70 00 25 00 00 c0 ff 29 c2 89 d0
> c1 e8 0c 8b 14 85 84 52 40 c0 4a 89 14 85 84 52 40 c0 85 d2 74 07 31 c0
> 4a 75 15 eb 04 <0f> 0b eb fe 31 c0 81 3d 68 47 35 c0 68 47 35 c0 0f 95
> c0 fe 05 
> 
> Message from sysl...@kl22 at Aug 19 03:36:50 ...
>  kernel:[ 1594.574183] EIP: [<c0162deb>] kunmap_high+0x4e/0x84 SS:ESP
> 0068:f7845eb8
> 
> 
> 
> BTW I patched the kernel according to the wiki.
> 
> 
> -- 
> Wen,Zhang <wenz.zh...@gmail.com>
> 
> 
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