Multipaths are simultaneously OPTIMAL and BROKEN

[hab136]

http://imgur.com/a/bpArY

The "View Multipaths" button in the GUI is saying they're both fine, and if you scroll down, also broken. The Alert is complaining as well.

15 drives in an MD1000 connected over two cables to a Dell 6 Gbps SAS HBA. I took each one out one-by-one then re-inserted the same drive in the same slot, waiting for resilver each time. (I was recording serial number vs physical slot)

zpool status is fine:

pool: pool
state: ONLINE
scan: resilvered 200K in 0h0m with 0 errors on Sun Jun 26 12:22:51 2016
config:

NAME STATE READ WRITE CKSUM
pool ONLINE 0 0 0
raidz2-0 ONLINE 0 0 0
multipath/disk1 ONLINE 0 0 0
multipath/disk10 ONLINE 0 0 0
multipath/disk11 ONLINE 0 0 0
multipath/disk12 ONLINE 0 0 0
multipath/disk13 ONLINE 0 0 0
multipath/disk14 ONLINE 0 0 0
multipath/disk15 ONLINE 0 0 0
multipath/disk2 ONLINE 0 0 0
multipath/disk3 ONLINE 0 0 0
multipath/disk4 ONLINE 0 0 0
multipath/disk5 ONLINE 0 0 0
multipath/disk6 ONLINE 0 0 0
multipath/disk7 ONLINE 0 0 0
multipath/disk8 ONLINE 0 0 0
multipath/disk9 ONLINE 0 0 0

errors: No known data errors

I suppose a reboot would fix it, but any other ideas? Doesn't seem to actually harm anything, but ignoring the fake alert will prevent me from seeing real alerts.

Build FreeNAS-9.10-STABLE-201606072003 (696eba7)
Platform Intel(R) Xeon(R) CPU E5630 @ 2.53GHz
Memory 32738MB
System Time Sun Jun 26 12:47:43 EEST 2016
Uptime 12:47PM up 11 days, 4:13, 1 user
Load Average 0.07, 0.13, 0.14

 

[dlavigne]

It may be related to https://bugs.freenas.org/issues/11648, which was fixed in the last SU.

Did a reboot sort it?

 

[hab136]

I rebooted to upgrade to FreeNAS-9.10-STABLE-201606270534 (dd17351), and everything showed OPTIMAL, with no physical changes.

A disk then started failing (SMART was yelling about imminent doom, and one of the multipaths for the drive failed also), and so I physically replaced it. The replacement disk in the same slot shows OPTIMAL.

So, looks like it was fixed. :)