/dev/md0 を無効にする時、udevd-work[PID]: error opening ATTR{/sys/devices/virtual/block/md0/queue/iosched/quantum} for writing: No such file or directory が報告される
Issue
RHEL6 で /dev/mdX を無効にする時、エラーが報告されます。
-bash-4.1# mdadm -S /dev/md0
md0: detected capacity change from 209702912 to 0
md: md0 stopped.
md: unbind<sdb1>
md: export_rdev(sdb1)
md: unbind<sda1>
md: export_rdev(sda1)
mdadm: stopped /dev/md0
udevd-work[1890]: error opening ATTR{/sys/devices/virtual/block/md0/queue/iosched/slice_idle} for writing:No such file or directory
udevd-work[1890]: error opening ATTR{/sys/devices/virtual/block/md0/queue/iosched/quantum} for writing:No such file or directory
udevd-work[1890]: error opening ATTR{/sys/devices/virtual/block/md0/queue/iosched/slice_idle} for writing:No such file or directory
udevd-work[1890]: error opening ATTR{/sys/devices/virtual/block/md0/queue/iosched/quantum} for writing:No such file or directory
Environment
Red Hat Enterprise Linux 6
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