Public bug reported:
I'm currently using a dual iscsi-connection to our san on 14.04 and
trying to enable multipath. I want to use the "no_path_retry"-feature
instead of "queue_if_no_path". It's working if I start everything
manually, but it doesn't work after a reboot, because multipathd doesn't
know the multipathed iscsi disks.
to reproduce:
* disconnect your iscsi-sessions
* reconfigure your multipathd
* "show paths" should be empty
* stop your multipathd
* start your multipathd
* start your iscsi-connections
multipath -ll
--
size=4.0T features='1 queue_if_no_path' hwhandler='0' wp=rw
`-+- policy='round-robin 0' prio=1 status=active
|- 10:0:0:0 sdc 8:32 active ready running
`- 11:0:0:0 sda 8:0 active ready running
--
Now I would expect multipathd to check the paths and disable "queue_if_no_path"
if max-retry is reached or multipathd exits, but
"show config" is empty and multipathd isn't doing anything.
--
echo 'show paths' | multipathd -k
multipathd> show paths
multipathd>
--
If I execute a "reconfigure" everything is detected and checks are executed.
--
# echo "reconfigure" | multipathd -k
multipathd> reconfigure
ok
# echo 'show paths' | multipathd -k
multipathd> show paths
hcil dev dev_t pri dm_st chk_st dev_st next_check
11:0:0:0 sda 8:0 1 active ready running XXXXXXX... 7/10
10:0:0:0 sdc 8:32 1 active ready running XXXXXXX... 7/10
--
But during boot nobody is triggering this "reconfigure", so multipathd
isn't checking the paths and queue_if_no_path will not be removed after
max-retry is reached causing a system hang if storage isn't reachable.
** Affects: multipath-tools (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1400371
Title:
multipathd doesn't reconfigure
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