Le mardi 25 mars 2014 à 22:18 +0200, Ilya Dryomov a écrit :
> On Tue, Mar 25, 2014 at 9:03 PM, Alex Elder <elder@xxxxxxxx> wrote:
> > On 03/25/2014 01:53 PM, Olivier Bonvalet wrote:
> >> Le mardi 25 mars 2014 à 12:43 -0500, Alex Elder a écrit :
> >>> Please try applying this, on top of the previous patch.
> >>> If you can then reproduce the problem we'll have a bunch
> >>> of new information about the particular request that's
> >>> leading to the failure. That might tell us what more we
> >>> can do to find the root cause. Thank you.
> >>>
> >>> -Alex
> >>>
> >>> PS I hope my mailer doesn't botch the long lines. It might.
> >>>
> >>
> >> Here the execution will continue, no more kernel panic after this
> >> debugging display. Is it wanted ?
> >
> >
> > I guess it should panic. I'm glad you mentioned this.
>
> Just in case, if you haven't done it already: stick rbd_assert(0);
> after the last printk in that if statement, so it looks like this:
>
> if (which != img_request->next_completion) {
> printk("%s: bad image object request information:\n", __func__);
> printk("obj_request %p\n", obj_request);
> printk(" ->object_name <%s>\n", obj_request->object_name);
> ...
>
> printk("img_request %p\n", img_request);
> printk(" ->snap 0x%016llx\n", img_request->snap_id);
> ...
> printk(" ->result %d\n", img_request->result);
>
> rbd_assert(0);
> }
>
> Thanks,
>
> Ilya
>
Without the rbd_assert(0), I add this hang :
Mar 25 21:17:58 murmillia kernel: [ 2205.255933] rbd_img_obj_callback: bad image object request information:
Mar 25 21:17:58 murmillia kernel: [ 2205.255938] obj_request ffff88025a2b3c48
Mar 25 21:17:58 murmillia kernel: [ 2205.255940] ->object_name <rb.0.1536881.238e1f29.000000000439>
Mar 25 21:17:58 murmillia kernel: [ 2205.255941] ->offset 0
Mar 25 21:17:58 murmillia kernel: [ 2205.255943] ->length 28672
Mar 25 21:17:58 murmillia kernel: [ 2205.255944] ->type 0x1
Mar 25 21:17:58 murmillia kernel: [ 2205.255945] ->flags 0x3
Mar 25 21:17:58 murmillia kernel: [ 2205.255946] ->which 1
Mar 25 21:17:58 murmillia kernel: [ 2205.255948] ->xferred 28672
Mar 25 21:17:58 murmillia kernel: [ 2205.255949] ->result 0
Mar 25 21:17:58 murmillia kernel: [ 2205.255950] img_request ffff8802536c4a60
Mar 25 21:17:58 murmillia kernel: [ 2205.255952] ->snap 0xffff880257f85ec0
Mar 25 21:17:58 murmillia kernel: [ 2205.255953] ->offset 4534026240
Mar 25 21:17:58 murmillia kernel: [ 2205.255954] ->length 45056
Mar 25 21:17:58 murmillia kernel: [ 2205.255955] ->flags 0x1
Mar 25 21:17:58 murmillia kernel: [ 2205.255957] ->obj_request_count 1
Mar 25 21:17:58 murmillia kernel: [ 2205.255958] ->next_completion 2
Mar 25 21:17:58 murmillia kernel: [ 2205.255959] ->xferred 45056
Mar 25 21:17:58 murmillia kernel: [ 2205.255960] ->result 0
Mar 25 21:17:58 murmillia kernel: [ 2205.255962]
Mar 25 21:17:58 murmillia kernel: [ 2205.255962] Assertion failure in rbd_img_obj_callback() at line 2162:
Mar 25 21:17:58 murmillia kernel: [ 2205.255962]
Mar 25 21:17:58 murmillia kernel: [ 2205.255962] rbd_assert(which < img_request->obj_request_count);
Mar 25 21:17:58 murmillia kernel: [ 2205.255962]
Mar 25 21:17:58 murmillia kernel: [ 2205.256141] ------------[ cut here ]------------
Mar 25 21:17:58 murmillia kernel: [ 2205.256178] kernel BUG at drivers/block/rbd.c:2162!
--
To unsubscribe from this list: send the line "unsubscribe ceph-devel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
