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

[Peter Petrakis]

@Clint

Maverick verification: no udev change events observed

root at kickseed:~# udevadm monitor &
[1] 1999
root at kickseed:~# 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
7
testing pathchecker /sbin/mpath_prio_rdac
0

root at kickseed:~# uname -a
Linux kickseed 2.6.35-30-generic #54-Ubuntu SMP Tue Jun 7 18:41:54 UTC 2011 x86_64 GNU/Linux

root at kickseed:~# apt-cache policy multipath-tools
multipath-tools:
  Installed: 0.4.8-14ubuntu4.10.10.1
  Candidate: 0.4.8-14ubuntu4.10.10.1
  Version table:
 *** 0.4.8-14ubuntu4.10.10.1 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     0.4.8-14ubuntu4 0
        500 http://us.archive.ubuntu.com/ubuntu/ maverick/main amd64 Packages

root at kickseed:~# mount
/dev/mapper/2226500015588d809-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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