On 11/05/2013 12:46 PM, Tomasz Chmielewski wrote:
More than 12 hours ago, I tried to umount a btrfs filesystem.
Something involving btrfs-cleaner and btrfs-transacti is still
running, but I don't know what.
Does "iostat -x 1" or "iostat -k 1" show any disk activity?
Yes. For instance, from iostat -x 1:
Device: rrqm/s wrqm/s r/s w/s rkB/s wkB/s
avgrq-sz avgqu-sz await r_await w_await svctm %util
sdb 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00 0.00 0.00
sda 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00 0.00 0.00
dm-0 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00 0.00 0.00
sdc 0.00 0.00 104.00 0.00 416.00 0.00
8.00 1.03 10.08 10.08 0.00 9.31 96.80
sdd 0.00 0.00 0.00 0.00 0.00 0.00
0.00 0.00 0.00 0.00 0.00 0.00 0.00
sdc and sdd are the drives in this brtfs FS, and they are used for
nothing but that.
iostat -k 1 shows similar levels of activity.
Anything interesting in dmesg?
There was this when it was first mounted:
Nov 4 11:28:43 erwin kernel: [ 200.669110] btrfs: use lzo compression
Nov 4 11:28:43 erwin kernel: [ 200.669114] btrfs: disk space caching
is enabled
Nov 4 11:28:58 erwin kernel: [ 215.660695] BTRFS debug (device dm-15):
unlinked 1 orphans
Nov 4 11:28:58 erwin kernel: [ 215.673535] btrfs: force skipping balance
I later canceled the balance
Also, several like this:
Nov 4 11:51:23 erwin kernel: [ 1560.552129] INFO: task
btrfs-transacti:6775 blocked for more than 120 seconds.
Nov 4 11:51:23 erwin kernel: [ 1560.552200] btrfs-transacti D 90d3d4a2
0 6775 2 0x00000000
Nov 4 11:51:23 erwin kernel: [ 1560.553136] [<f85852b6>] ?
wait_current_trans.isra.20+0x8b/0xb5 [btrfs]
Nov 4 11:51:23 erwin kernel: [ 1560.553217] [<f858740d>] ?
start_transaction+0x1db/0x46f [btrfs]
Nov 4 11:51:23 erwin kernel: [ 1560.553267] [<f85876e0>] ?
btrfs_attach_transaction+0xd/0x10 [btrfs]
Nov 4 11:51:23 erwin kernel: [ 1560.553316] [<f8580963>] ?
transaction_kthread+0xa3/0x158 [btrfs]
Nov 4 11:51:23 erwin kernel: [ 1560.553366] [<f85808c0>] ?
try_to_freeze+0x28/0x28 [btrfs]
but that was befrore the umount.
Nothing else.
-- John
--
To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
