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Oracle Linux: "udevd-work[<PID>]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/scheduler} for writing: No such file or directory" (Doc ID 2284761.1)

Last updated on AUGUST 04, 2018

Applies to:

Linux OS - Version Oracle Linux 6.0 and later
Linux x86-64

Symptoms

After adding storage devices, the following udev errors are seen in /var/log/messages:

Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:2/queue/scheduler} for writing: No such file or directory

 

Full Log:

Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:2/queue/scheduler} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/scheduler} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/add_random} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:2/queue/add_random} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/rq_affinity} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:2/queue/rq_affinity} for writing: No such file or directory
Jul 7 13:04:40 host1 multipathd: dm-2: remove map (uevent)
Jul 7 13:04:40 host1 multipathd: dm-2: devmap not registered, can't remove
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/scheduler} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/add_random} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-2/queue/rq_affinity} for writing: No such file or directory
Jul 7 13:04:40 host1 multipathd: mpathd: event checker exit
Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:3/queue/scheduler} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:3/queue/add_random} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29671]: error opening ATTR{/sys/devices/virtual/bdi/251:3/queue/rq_affinity} for writing: No such file or directory
Jul 7 13:04:40 host1 multipathd: dm-3: remove map (uevent)
Jul 7 13:04:40 host1 multipathd: dm-3: devmap not registered, can't remove
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-3/queue/scheduler} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-3/queue/add_random} for writing: No such file or directory
Jul 7 13:04:40 host1 udevd-work[29670]: error opening ATTR{/sys/devices/virtual/block/dm-3/queue/rq_affinity} for writing: No such file or directory

 

Changes

 

Cause

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In this Document
Symptoms
Changes
Cause
Solution


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