System hang during repeated alua access state changes

Solution Unverified - Updated -

Issue

  • System hang during repeated alua access state changes
sd 16:0:0:70: alua: port group 01 state N non-preferred supports TolUsNA
sd 18:0:0:74: Asymmetric access state changed
sd 16:0:0:74: Asymmetric access state changed
sd 17:0:0:74: Asymmetric access state changed
sd 16:0:0:74: alua: port group 01 state N non-preferred supports TolUsNA
sd 15:0:0:70: alua: port group 00 state A non-preferred supports TolUsNA
sd 15:0:0:70: alua: port group 00 state A non-preferred supports TolUsNA
sd 15:0:0:21: Asymmetric access state changed
sd 15:0:0:21: alua: port group 00 state A non-preferred supports TolUsNA
sd 15:0:0:76: Asymmetric access state changed
sd 15:0:0:76: alua: port group 00 state A non-preferred supports TolUsNA
sd 15:0:0:80: Asymmetric access state changed
sd 15:0:0:80: alua: port group 00 state A non-preferred supports TolUsNA
sd 16:0:0:24: Asymmetric access state changed
sd 16:0:0:24: alua: port group 01 state A non-preferred supports TolUsNA
....
INFO: task oracle:86205 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
oracle          D ffff8dbd7e4dacc0     0 86205      1 0x00000080
Call Trace:
[<ffffffffb1d87169>] schedule+0x29/0x70
[<ffffffffb1d84c51>] schedule_timeout+0x221/0x2d0
[<ffffffffb195359a>] ? queue_unplugged+0x2a/0xa0
[<ffffffffb1706362>] ? ktime_get_ts64+0x52/0xf0
[<ffffffffb1d8683d>] io_schedule_timeout+0xad/0x130
[<ffffffffb16c6896>] ? prepare_to_wait_exclusive+0x56/0x90
[<ffffffffb1d868d8>] io_schedule+0x18/0x20
[<ffffffffb19541f3>] get_request+0x243/0x7d0
[<ffffffffb195d001>] ? blk_rq_merge_ok+0x31/0x180
[<ffffffffb16c6d10>] ? wake_up_atomic_t+0x30/0x30
[<ffffffffb1956f2e>] blk_queue_bio+0xfe/0x400
[<ffffffffb1955167>] generic_make_request+0x147/0x380
[<ffffffffb188c149>] ? bvec_alloc+0x59/0x120
[<ffffffffb1955410>] submit_bio+0x70/0x150
[<ffffffffb188c423>] ? bio_alloc_bioset+0x213/0x310
[<ffffffffb1893208>] do_blockdev_direct_IO+0x1e98/0x20b0
[<ffffffffb188db80>] ? set_init_blocksize+0x90/0x90
[<ffffffffb1893475>] __blockdev_direct_IO+0x55/0x60
[<ffffffffb188db80>] ? set_init_blocksize+0x90/0x90
[<ffffffffb188e297>] blkdev_direct_IO+0x57/0x60
[<ffffffffb188db80>] ? set_init_blocksize+0x90/0x90
[<ffffffffb17c0183>] generic_file_direct_write+0xd3/0x190
[<ffffffffb17c0477>] __generic_file_aio_write+0x237/0x400
[<ffffffffb188ec26>] blkdev_aio_write+0x56/0xb0
[<ffffffffb188ebd0>] ? bd_acquire+0xe0/0xe0
[<ffffffffb18a5963>] do_io_submit+0x3e3/0x8a0
[<ffffffffb18a5e30>] SyS_io_submit+0x10/0x20
[<ffffffffb1d93f92>] system_call_fastpath+0x25/0x2a

Environment

  • Red Hat Enterprise Linux 7

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