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From: Donald Buczek <buczek@molgen.mpg.de>
To: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>,
	Song Liu <song@kernel.org>,
	linux-raid@vger.kernel.org,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	it+raid@molgen.mpg.de
Subject: Re: md_raid: mdX_raid6 looping after sync_action "check" to "idle" transition
Date: Mon, 21 Dec 2020 13:33:58 +0100
Message-ID: <efb8d47b-ab9b-bdb9-ee2f-fb1be66343b1@molgen.mpg.de> (raw)
In-Reply-To: <37c158cb-f527-34f5-2482-cae138bc8b07@molgen.mpg.de>

Dear Guoging,

I think now that this is not an issue for md. I've driven a system into that situation again and have clear indication, that this is a problem of the member block device driver.

With md0 in the described errornous state (md0_raid6 busy looping, echo idle > .../sync_action blocked, no progress in mdstat) and md1 operating normally:

     root:deadbird:/scratch/local/# for f in /sys/devices/virtual/block/md?/md/rd*/block/inflight;do echo $f: $(cat $f);done
     /sys/devices/virtual/block/md0/md/rd0/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd1/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd10/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd11/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd12/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd13/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd14/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd15/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd2/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd3/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd4/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd5/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd6/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd7/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd8/block/inflight: 1 0
     /sys/devices/virtual/block/md0/md/rd9/block/inflight: 1 0
     /sys/devices/virtual/block/md1/md/rd0/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd1/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd10/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd11/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd12/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd13/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd14/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd15/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd2/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd3/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd4/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd5/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd6/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd7/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd8/block/inflight: 0 0
     /sys/devices/virtual/block/md1/md/rd9/block/inflight: 0 0

Best
   Donald

  reply index

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-28 12:25 Donald Buczek
2020-11-30  2:06 ` Guoqing Jiang
2020-12-01  9:29   ` Donald Buczek
2020-12-02 17:28     ` Donald Buczek
2020-12-03  1:55       ` Guoqing Jiang
2020-12-03 11:42         ` Donald Buczek
2020-12-21 12:33           ` Donald Buczek [this message]
2021-01-19 11:30             ` Donald Buczek
2021-01-20 16:33               ` Guoqing Jiang
2021-01-23 13:04                 ` Donald Buczek
2021-01-25  8:54                   ` Donald Buczek
2021-01-25 21:32                     ` Donald Buczek
2021-01-26  0:44                       ` Guoqing Jiang
2021-01-26  9:50                         ` Donald Buczek
2021-01-26 11:14                           ` Guoqing Jiang
2021-01-26 12:58                             ` Donald Buczek
2021-01-26 14:06                               ` Guoqing Jiang
2021-01-26 16:05                                 ` Donald Buczek
2021-02-02 15:42                                   ` Guoqing Jiang
2021-02-08 11:38                                     ` Donald Buczek
2021-02-08 14:53                                       ` Guoqing Jiang
2021-02-08 18:41                                         ` Donald Buczek
2021-02-09  0:46                                           ` Guoqing Jiang
2021-02-09  9:24                                             ` Donald Buczek

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