[Bug 1354114] Re: multipath segmentation Fault (libmultipath: update waiter handling)

[Rafael David Tinoco]

### Precise multipath daemon restart

root at tryprecise:~# dpkg -l | grep multipath-tools
ii  multipath-tools                  0.4.9-3ubuntu5.3                  maintain multipath block device access
root at tryprecise:~# service multipath-tools restart
 * Stopping multipath daemon multipathd                                                                                                                                      [ OK ] 
 * Starting multipath daemon multipathd                                                                                                                                      [ OK ] 
root at tryprecise:~# multipath -ll
lun2 (149455400000000009feaa66a15201fac7bf681e6f5437e7d) dm-2 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 7:0:0:0 sde 8:64  active ready  running
  `- 6:0:0:0 sdf 8:80  active ready  running
lun1 (14945540000000000049be5a45b84b7f6b1f734ee26d3d7d9) dm-1 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 2:0:0:0 sda 8:0   active ready  running
  `- 3:0:0:0 sdc 8:32  active ready  running
2luns1 (14945540000000000a442400296ddc9a76bdb59e62b95154a) dm-4 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 4:0:0:1 sdd 8:48  active ready  running
  `- 5:0:0:1 sdh 8:112 active ready  running
2luns0 (149455400000000007dc14f47242331ed7394e2272e4b7346) dm-3 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 4:0:0:0 sdb 8:16  active ready  running
  `- 5:0:0:0 sdg 8:96  active ready  running

# Trusty multipath daemon restart

root at trytrusty:~# dpkg -l | grep multipath-tools
ii  multipath-tools                     0.4.9-3ubuntu7.2              amd64        maintain multipath block device access
root at trytrusty:~# service multipath-tools restart
 * Stopping multipath daemon multipathd                                                                                                                                      [ OK ] 
 * Starting multipath daemon multipathd                                                                                                                                      [ OK ] 
root at trytrusty:~# multipath -ll
lun2 (149455400000000009feaa66a15201fac7bf681e6f5437e7d) dm-3 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 6:0:0:0 sdg 8:96  active ready  running
  `- 7:0:0:0 sdh 8:112 active ready  running
lun1 (14945540000000000049be5a45b84b7f6b1f734ee26d3d7d9) dm-1 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 4:0:0:0 sdc 8:32  active ready  running
  `- 5:0:0:0 sdf 8:80  active ready  running
2luns1 (14945540000000000a442400296ddc9a76bdb59e62b95154a) dm-2 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 2:0:0:1 sdd 8:48  active ready  running
  `- 3:0:0:1 sde 8:64  active ready  running
2luns0 (149455400000000007dc14f47242331ed7394e2272e4b7346) dm-4 IET,VIRTUAL-DISK
size=5.0G features='0' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
  |- 2:0:0:0 sda 8:0   active ready  running
  `- 3:0:0:0 sdb 8:16  active ready  running

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https://bugs.launchpad.net/bugs/1354114

Title:
  multipath segmentation Fault (libmultipath: update waiter handling)

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