[Xen-users] xen, lvm, drbd, bad kernel messages

[jeremy avnet <brainsik-xen@xxxxxxxxxxxxxx>]

Regardless of the filesystem (i've used reiserfs, xfs, ext3), whenever I mount a fresh DRBD partition I get some nasty kernel messages.

This is under Debian Sarge, Xen kernel 2.6.11.12-xen0 (dom0) using DRBD v0.7.11 (pulled from Debian "testing").

This is what I did to create the partition.

On both nodes I created a new LVM storage device and started DRBD:

# lvcreate -L1G -n drbdtest xen

# /etc/init.d/drbd start

The rest I did on the primary node.

Set the node primary:

# drbdadm -- --do-what-I-say primary all

Check everything looks fine:

# dmesg | tail ; cat /proc/drbd

Make the filesystem:

# mkfs.ext3 /dev/drbd0

Mount:

# mount /dev/drbd0 /mnt/drbd0

Then I get the following kernel messages:

Nov  1 13:52:13 localhost kernel: Badness in blk_plug_device at drivers/block/ll_rw_blk.c:1217

Nov  1 13:52:13 localhost kernel:  [blk_plug_device+128/144] blk_plug_device+0x80/0x90

Nov  1 13:52:13 localhost kernel:  [pg0+140817474/1002423296] drbd_make_request_common+0x6f2/0x8a0 [drbd]

Nov  1 13:52:13 localhost kernel:  [mempool_alloc+115/432] mempool_alloc+0x73/0x1b0

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [pg0+140818108/1002423296] drbd_make_request_26+0xcc/0x27d [drbd]

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [generic_make_request+343/496] generic_make_request+0x157/0x1f0

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [do_anonymous_page+438/544] do_anonymous_page+0x1b6/0x220

Nov  1 13:52:13 localhost kernel:  [mempool_alloc+115/432] mempool_alloc+0x73/0x1b0

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [submit_bio+98/256] submit_bio+0x62/0x100

Nov  1 13:52:13 localhost kernel:  [bio_alloc+231/480] bio_alloc+0xe7/0x1e0

Nov  1 13:52:13 localhost kernel:  [end_buffer_async_read+0/320] end_buffer_async_read+0x0/0x140

Nov  1 13:52:13 localhost kernel:  [submit_bh+213/288] submit_bh+0xd5/0x120

Nov  1 13:52:13 localhost kernel:  [block_read_full_page+404/672] block_read_full_page+0x194/0x2a0

Nov  1 13:52:13 localhost kernel:  [add_to_page_cache+112/208] add_to_page_cache+0x70/0xd0

Nov  1 13:52:13 localhost kernel:  [read_pages+241/320] read_pages+0xf1/0x140

Nov  1 13:52:13 localhost kernel:  [blkdev_get_block+0/96] blkdev_get_block+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [__alloc_pages+739/1056] __alloc_pages+0x2e3/0x420

Nov  1 13:52:13 localhost kernel:  [__do_page_cache_readahead+247/400] __do_page_cache_readahead+0xf7/0x190

Nov  1 13:52:13 localhost kernel:  [blockable_page_cache_readahead+58/128] blockable_page_cache_readahead+0x3a

/0x80

Nov  1 13:52:13 localhost kernel:  [page_cache_readahead+218/720] page_cache_readahead+0xda/0x2d0

Nov  1 13:52:13 localhost kernel:  [do_generic_mapping_read+1442/1472] do_generic_mapping_read+0x5a2/0x5c0

Nov  1 13:52:13 localhost kernel:  [__generic_file_aio_read+514/576] __generic_file_aio_read+0x202/0x240

Nov  1 13:52:13 localhost kernel:  [file_read_actor+0/224] file_read_actor+0x0/0xe0

Nov  1 13:52:13 localhost kernel:  [write_buffer+4/64] write_buffer+0x4/0x40

Nov  1 13:52:13 localhost kernel:  [generic_file_read+180/208] generic_file_read+0xb4/0xd0

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [generic_file_read+0/208] generic_file_read+0x0/0xd0

Nov  1 13:52:13 localhost kernel:  [vfs_read+174/304] vfs_read+0xae/0x130

Nov  1 13:52:13 localhost kernel:  [sys_read+81/128] sys_read+0x51/0x80

Nov  1 13:52:13 localhost kernel:  [syscall_call+7/11] syscall_call+0x7/0xb

Nov  1 13:52:13 localhost kernel: Badness in blk_remove_plug at drivers/block/ll_rw_blk.c:1238

Nov  1 13:52:13 localhost kernel:  [blk_remove_plug+110/112] blk_remove_plug+0x6e/0x70

Nov  1 13:52:13 localhost kernel:  [pg0+140840834/1002423296] drbd_unplug_fn+0x22/0x220 [drbd]

Nov  1 13:52:13 localhost kernel:  [blk_backing_dev_unplug+25/32] blk_backing_dev_unplug+0x19/0x20

Nov  1 13:52:13 localhost kernel:  [block_sync_page+60/80] block_sync_page+0x3c/0x50

Nov  1 13:52:13 localhost kernel:  [sync_page+70/80] sync_page+0x46/0x50

Nov  1 13:52:13 localhost kernel:  [__wait_on_bit_lock+94/112] __wait_on_bit_lock+0x5e/0x70

Nov  1 13:52:13 localhost kernel:  [sync_page+0/80] sync_page+0x0/0x50

Nov  1 13:52:13 localhost kernel:  [wake_bit_function+0/96] wake_bit_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [__lock_page+145/160] __lock_page+0x91/0xa0

Nov  1 13:52:13 localhost kernel:  [wake_bit_function+0/96] wake_bit_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [page_cache_readahead+218/720] page_cache_readahead+0xda/0x2d0

Nov  1 13:52:13 localhost kernel:  [wake_bit_function+0/96] wake_bit_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [find_get_page+53/128] find_get_page+0x35/0x80

Nov  1 13:52:13 localhost kernel:  [do_generic_mapping_read+1207/1472] do_generic_mapping_read+0x4b7/0x5c0

Nov  1 13:52:13 localhost kernel:  [__generic_file_aio_read+514/576] __generic_file_aio_read+0x202/0x240

Nov  1 13:52:13 localhost kernel:  [file_read_actor+0/224] file_read_actor+0x0/0xe0

Nov  1 13:52:13 localhost kernel:  [write_buffer+4/64] write_buffer+0x4/0x40

Nov  1 13:52:13 localhost kernel:  [generic_file_read+180/208] generic_file_read+0xb4/0xd0

Nov  1 13:52:13 localhost kernel:  [autoremove_wake_function+0/96] autoremove_wake_function+0x0/0x60

Nov  1 13:52:13 localhost kernel:  [generic_file_read+0/208] generic_file_read+0x0/0xd0

Nov  1 13:52:13 localhost kernel:  [vfs_read+174/304] vfs_read+0xae/0x130

Nov  1 13:52:13 localhost kernel:  [sys_read+81/128] sys_read+0x51/0x80

Nov  1 13:52:13 localhost kernel:  [syscall_call+7/11] syscall_call+0x7/0xb

Though, the partition appears to have mounted okay:

Nov  1 13:52:13 localhost kernel: kjournald starting.  Commit interval 5 seconds

Nov  1 13:52:13 localhost kernel: EXT3 FS on drbd0, internal journal

Nov  1 13:52:13 localhost kernel: EXT3-fs: mounted filesystem with ordered data mode.

Any ideas? I saw similar post to the drbd list from last January, but no one had any comments. 

http://lists.linbit.com/pipermail/drbd-user/2005-January/002436.html

I've sent this message to drbd-user as well.

Thank you.

.:. jeremy

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