On Mon 22-10-12 18:18:10, Fabio Coatti wrote:
> 2012/10/22 Jan Kara <j...@suse.cz>:
> > On Mon 22-10-12 18:01:56, Fabio Coatti wrote:
> >> 2012/10/22 Jan Kara <j...@suse.cz>:
> >> >> Uhu, my fault, I was sure to have answered to your request, sorry.
> >> >> So yes, we have an ext3 R/O partition mounted on that machine. The
> >> >> 3.6.3, with patch applied, dmesg is here:
> >> > Interesting. You seem to be using data=journal on R/O partition, don't
> >> > you? Can you also attach /proc/mounts?
> >> >
> >> > Also please try running a kernel with the attached patch and report the
> >> > warning. Thanks!
> >>
> >> Do you want to try the kernel without touching the mount
> >> configuration, right? (I mean, without (say) mounting ext2 the ext3 ro
> >> partition, right?)
> > Yes, leave things as they are now...
> >
> >> right now I can't access the machine, but I recall that the partition
> >> is mounted rw, something is wrote onto it and then changed to r/o and
> >> among the options there is data=ordered.
> > /proc/mounts should show us whether data=ordered is in use. Actually the
> > warning is in function which is called only in data=journal mode so that's
> > why I think you are using it...
>
> Ok, got the options:
>
> ro,noatime,errors=continue,barrier=1,data=ordered 0 0
Can you please post *full* /proc/mounts content? Thanks. It is hard to
believe ext3_journalled_writepage() gets called on data=ordered filesystem.
Honza
> and as expected, the usual warning triggered, but not the message from
> your patch:
>
> [ 173.408622] ------------[ cut here ]------------
> [ 173.408725] WARNING: at fs/ext3/inode.c:1754
> ext3_journalled_writepage+0x55/0x1a7()
> [ 173.408850] Hardware name: ProLiant BL465c G7
> [ 173.408940] Pid: 2142, comm: flush-8:0 Not tainted 3.6.3-p #2
> [ 173.409034] Call Trace:
> [ 173.409123] [<ffffffff81057884>] ? warn_slowpath_common+0x73/0x87
> [ 173.409219] [<ffffffff8115cd04>] ? ext3_journalled_writepage+0x55/0x1a7
> [ 173.409320] [<ffffffff810a2833>] ? __writepage+0xa/0x21
> [ 173.409414] [<ffffffff810a31db>] ? write_cache_pages+0x206/0x2f8
> [ 173.409509] [<ffffffff810a2829>] ? set_page_dirty+0x5e/0x5e
> [ 173.409604] [<ffffffff81297cfb>] ? queue_unplugged+0x28/0x34
> [ 173.409698] [<ffffffff810a330b>] ? generic_writepages+0x3e/0x55
> [ 173.409793] [<ffffffff810f4eb0>] ? __writeback_single_inode+0x39/0xd1
> [ 173.409889] [<ffffffff810f5c69>] ? writeback_sb_inodes+0x206/0x392
> [ 173.409983] [<ffffffff810f5e5c>] ? __writeback_inodes_wb+0x67/0xa2
> [ 173.410079] [<ffffffff810f5ffa>] ? wb_writeback+0xfd/0x18b
> [ 173.410172] [<ffffffff810a36d1>] ? bdi_dirty_limit+0x27/0x81
> [ 173.410348] [<ffffffff810f61c5>] ? wb_do_writeback+0x13d/0x1a2
> [ 173.410461] [<ffffffff81061e9b>] ? add_timer_on+0x61/0x61
> [ 173.410584] [<ffffffff810f62a9>] ? bdi_writeback_thread+0x7f/0x13e
> [ 173.410700] [<ffffffff8106a54d>] ? queue_work_on+0x16/0x1e
> [ 173.410809] [<ffffffff810f622a>] ? wb_do_writeback+0x1a2/0x1a2
> [ 173.410902] [<ffffffff810f622a>] ? wb_do_writeback+0x1a2/0x1a2
> [ 173.410996] [<ffffffff8106e134>] ? kthread+0x81/0x89
> [ 173.411089] [<ffffffff81607e74>] ? kernel_thread_helper+0x4/0x10
> [ 173.411184] [<ffffffff8106e0b3>] ? kthread_worker_fn+0xe0/0xe0
> [ 173.411277] [<ffffffff81607e70>] ? gs_change+0xb/0xb
> [ 173.411367] ---[ end trace 8243403b245b6cfc ]---
>
> --
> Fabio
--
Jan Kara <j...@suse.cz>
SUSE Labs, CR
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