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Issues with 12.0-U1 resulting in kernel panic boot loop

bernieke

Neophyte
Joined
Feb 17, 2013
Messages
8
Hi,

After I upgraded to 12.0-U1 last week I started getting following error emails (multiple each day), all of which cleared themselves after a minute (the resilvers as well, they resilver at most a few mb in a few seconds time):
* Read SMART Error Log Failed.
* smartd is not running
* Pool zpool state is ONLINE: One or more devices has experienced an unrecoverable error. An attempt was made to correct the error. Applications are unaffected.
* Pool zpool state is ONLINE: One or more devices is currently being resilvered. The pool will continue to function, possibly in a degraded state.
* Pool zpool state is ONLINE: One or more devices has experienced an error resulting in data corruption. Applications may be affected.

And I got a few faulted/removed drives (on two occasions, each time two different drives, on the first occasion the drives got faulted, on the second they got removed):
* Pool zpool state is DEGRADED: One or more devices are faulted in response to persistent errors. Sufficient replicas exist for the pool to continue functioning in a degraded state.
* Pool zpool state is DEGRADED: One or more devices has been removed by the administrator. Sufficient replicas exist for the pool to continue functioning in a degraded state. (They had certainly not been removed by me...)

After the drives got "removed" (not really, they were still there in zpool status), I did a zpool clear to get the pool back (it was no longer accessible at this point), and noticed my jails were no longer working properly, so decided to do a full shutdown and fresh boot.

After this the machine would keep rebooting every 10 minutes or so.
Looking at the ipmi I saw the reboots were happening because of the watchdog.
I attached the console and managed to grab a recording of following kernel panic:
kernel_panic.png


During the next reboot I changed the boot environment back to 12.0-RELEASE, and the system has been running fine once more for the past hour and a half. (The reboots had been going on for 3 hours before I changed the boot environment, so it was certainly not a coincidence.)

My system consists of:
* Supermicro X9SCA with Xeon E3-1200 v2 and 32GB ECC memory
* three 9211-8i HBAs (20.00.04.00 IT firmware)
* 24 sata drives (6 12TB TOSHIBA MG07ACA1 and 18 4TB ST4000VN008, ST4000DM000, HGST HMS5C4040BL and Hitachi HUS72404)

If there's anything else I can provide to help you figure this out, please let me know.
 

Newfoundland.Republic

Neophyte Sage
Joined
Jul 2, 2019
Messages
638
A few quick suggestions:
  1. If the drives are in hot-swap trays, remove and then reinsert the drives (after powering down...); otherwise try unplugging and re-plugging the power and data connectors to the drives
  2. If you have a new/known good data cable, try swapping them out
  3. You could try removing and re-inserting the HBAs
--- Edit ---
Additional thought: Have you looked at your power supply? I can't tell from your config if you are using a Supermicro chassis with associated power supply(ies) or something else. Does this happy under heavy load?
 

bernieke

Neophyte
Joined
Feb 17, 2013
Messages
8
Hi,

Thank you for the suggestions, but note that the problem only occurred after upgrading to U1 and went away again when going back to RELEASE.

So I doubt the problem is hardware related. Considering U1 comes with openzfs 2.0 I'm inclined to think that might be the source of these issues.

--- Edit ---
It looks like openzfs 2.0 was already part of 12.0-RELEASE as well? So must be something else then...
 

bernieke

Neophyte
Joined
Feb 17, 2013
Messages
8
Quick update: the system has been running error free on 12.0-RELEASE ever since.
 
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