On 05/27/15 17:29, Bart Van Assche wrote:
On 05/27/15 14:57, Mike Snitzer wrote:
Looks like Junichi likely fixed this issue you reported, please try this
patch: https://patchwork.kernel.org/patch/6487321/
Hello Mike,
On a setup on which an I/O verification test passes with
blk-mq/scsi-mq/dm-mq disabled, this is what fio reports after a few
minutes with scsi-mq and dm-mq enabled:
test: Laying out IO file(s) (1 file(s) / 10MB)
fio: io_u error on file /mnt/test.0.0: Input/output error: write
offset=8327168, buflen=4096
fio: io_u error on file /mnt/test.0.0: Input/output error: write
offset=9007104, buflen=4096
fio: pid=4568, err=5/file:io_u.c:1564, func=io_u error,
error=Input/output error
(replying to my own e-mail)
BTW, on the same test setup kmemleak reports several memory leaks, e.g.
this one:
unreferenced object 0xffff88009b14e2b0 (size 16):
comm "fio", pid 4274, jiffies 4294978034 (age 1253.210s)
hex dump (first 16 bytes):
40 12 f3 99 01 88 ff ff 00 10 00 00 00 00 00 00 @...............
backtrace:
[<ffffffff81600029>] kmemleak_alloc+0x49/0xb0
[<ffffffff811679a8>] kmem_cache_alloc+0xf8/0x160
[<ffffffff8111c950>] mempool_alloc_slab+0x10/0x20
[<ffffffff8111cb37>] mempool_alloc+0x57/0x150
[<ffffffffa04d2b61>] __multipath_map.isra.17+0xe1/0x220 [dm_multipath]
[<ffffffffa04d2cb5>] multipath_clone_and_map+0x15/0x20 [dm_multipath]
[<ffffffffa02889b5>] map_request.isra.39+0xd5/0x220 [dm_mod]
[<ffffffffa028b0e4>] dm_mq_queue_rq+0x134/0x240 [dm_mod]
[<ffffffff812cccb5>] __blk_mq_run_hw_queue+0x1d5/0x380
[<ffffffff812ccaa5>] blk_mq_run_hw_queue+0xc5/0x100
[<ffffffff812ce350>] blk_sq_make_request+0x240/0x300
[<ffffffff812c0f30>] generic_make_request+0xc0/0x110
[<ffffffff812c0ff2>] submit_bio+0x72/0x150
[<ffffffff811c07cb>] do_blockdev_direct_IO+0x1f3b/0x2da0
[<ffffffff811c166e>] __blockdev_direct_IO+0x3e/0x40
[<ffffffff8120aa1a>] ext4_direct_IO+0x1aa/0x390
Bart.
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