Bug 132216 - unused raid metadevices are shown as active
unused raid metadevices are shown as active
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Doug Ledford
Brian Brock
Depends On:
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Reported: 2004-09-09 18:06 EDT by Matthew Galgoci
Modified: 2007-11-30 17:07 EST (History)
6 users (show)

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Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2005-10-17 22:53:08 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Matthew Galgoci 2004-09-09 18:06:32 EDT
Description of problem:

I cannot mdadm --manage --stop /dev/md10 or raidstop /dev/md10 on 
an unused but active linux software array.

Here is /proc/mdstat:
# cat /proc/mdstat
Personalities : [raid1] [raid5]
read_ahead 1024 sectors
Event: 5
md10 : active raid5 sde1[0] sdl1[7] sdk1[6] sdj1[5] sdi1[4] sdh1[3]
sdg1[2] sdf1[1]
      124430656 blocks level 5, 64k chunk, algorithm 0 [8/8] [UUUUUUUU]
md0 : active raid1 sdb1[1] sda1[0]
      136448 blocks [2/2] [UU]
md2 : active raid1 sdb2[1] sda2[0]
      2096384 blocks [2/2] [UU]
md1 : active raid1 sdb3[1] sda3[0]
      6650816 blocks [2/2] [UU]
md3 : active raid1 sdd1[1] sdc1[0]
      8883840 blocks [2/2] [UU]
unused devices: <none>

Here is the output of mdadm --examine --scan
# mdadm --examine --scan
ARRAY /dev/md0 level=raid1 num-devices=2
ARRAY /dev/md3 level=raid1 num-devices=2
ARRAY /dev/md10 level=raid5 num-devices=8

Version-Release number of selected component (if applicable):

Kernel version 2.4.21-15.0.4.ELsmp

How reproducible:

All the time.

Steps to Reproduce:

Make any arbitrary raid array unused and attempt to stop the array.

For example:

Steps to Reproduce:
1. umount /boot
2. mdadm --manage --stop /dev/md0
Actual results:

raid array continues running because it is seen as in use.

Expected results:

raid array should stop.

Additional info:
Comment 2 Doug Ledford 2005-10-17 22:53:08 EDT
This looks like an old report that was solved long ago.  If this is still an
issue, then please reopen the report.

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