Verry serious problem with ZFS & 12.0
Albert.Shih at obspm.fr
Wed Aug 28 20:45:53 UTC 2019
After update 4 servers from 11.2 to 12.0 without any problem, wait few
weeks to see if everything work well, and it did. I just upgrade my mail
During the upgrade I also upgrade all firmware for the hardware.
And now I got a very serious issue with my server.
Dell PowerEdge R740Xd with H730P, 192 Go Ram, 2 SAS mechanical disk for the system,
2 SSD (in a zfs pool) for the mail index (cyrus), and 28 mechanical disk
(in a second zfs pool) for the mailbox.
After running few days the zfs pool with the 2 SSD are not responding.
The system are perfectly working.
The second zpool (mechanical disk) are perfectly working.
I got zero log, zero message in the console or in dmesg.
The arc_size are correct, it's around 70-75 %.
The moment the zfs pool become not responding are random, not related to
any activity (human or cron).
The only option I pass for the kernel related to ZFS are vfs.zfs.min_auto_ashift=12 and
vfs.zfs.prefetch_disable=1. Without the second one the system no
responding (under 11.2) when the server send (through zfs send) the data to another
After the first problem I make a zfs upgrade, thinking maybe that's the
problem so I'm not sure I can downgrade to 11.2 (and 11.2 are EOL)
In your opinion :
1/ What should I do to try to find the problem ?
2/ Do you think that's a hardware/firmware problem or FreeBSD problem,
the point is the second zpool are working perfectly so I'm thinking at
some firmware/hardware/compatibility problem.
DIO bâtiment 15
Observatoire de Paris
Heure local/Local time:
Thu 29 Aug 2019 12:26:55 AM CEST
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