[Bug 644489] Re: constantly changes /dev/disk/by-id/{scsi, wwn}-* LUN symlinks with multipathing

Peter Petrakis peter.petrakis at canonical.com
Tue Jun 28 13:44:24 UTC 2011


@Clint

lucid verification: no udev change events observed
NOTE: this issue depends on lp #686832

root at kickseed:~# lsb_release -r
Release:	10.04

root at kickseed:~# udevadm monitor &
[1] 2043
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

root at kickseed:~# for i in /sbin/mpath_prio_*
> do
> echo "testing pathchecker $i"
> $i /dev/sda 2>/dev/null
> done
testing pathchecker /sbin/mpath_prio_alua
50
testing pathchecker /sbin/mpath_prio_balance_units
1
testing pathchecker /sbin/mpath_prio_emc
0
testing pathchecker /sbin/mpath_prio_hds_modular
0
testing pathchecker /sbin/mpath_prio_hp_sw
4
testing pathchecker /sbin/mpath_prio_netapp
4
testing pathchecker /sbin/mpath_prio_random
1
testing pathchecker /sbin/mpath_prio_rdac
0
root at kickseed:~# uname -a
Linux kickseed 2.6.32-32-generic #62-Ubuntu SMP Wed Apr 20 21:52:38 UTC 2011 x86_64 GNU/Linux

root at kickseed:~# apt-cache policy multipath-tools
multipath-tools:
  Installed: 0.4.8-14ubuntu4.10.04.1
  Candidate: 0.4.8-14ubuntu4.10.04.1
  Version table:
 *** 0.4.8-14ubuntu4.10.04.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ lucid-proposed/main Packages
        100 /var/lib/dpkg/status
     0.4.8-14ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ lucid/main Packages

root at kickseed:~# mount
/dev/mapper/2225000015568f586-part1 on / type ext4 (rw,errors=remount-ro)
...

-- 
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https://bugs.launchpad.net/bugs/644489

Title:
  constantly changes /dev/disk/by-id/{scsi,wwn}-* LUN symlinks with
  multipathing

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