TheGagne
Cadet
- Joined
- Jul 23, 2015
- Messages
- 2
My ZFS system is crashing about once per month due to Watchdog Timeout. Not ideal. Also due to the irregularity of the crashes, it is hard to troubleshoot. I spent a bunch of time trying out how to disable watchdog reboots, but that did not solve the issue (ipmitool mc watchdog get, ipmitool mc watchdog off).
# FreeNAS-9.3-STABLE-201512121950
# from /var/log/messages before system reboot due to watchdog timeout
Aug 8 09:37:41 freenas mfi0: COMMAND 0xfffffe0001330550 TIMEOUT AFTER 975 SECONDS
# I'm using lsi3108 in jbod mode
# some posts of others with these issues point to changing read ahead and drive caching settings as a potential fix.
# https://forums.freenas.org/index.php?threads/lsi-megaraid-sas-9261-8i-timeout-with-write-back.5960/
# suggests drive write cache: disabled (what is default?)
# https://forums.freebsd.org/threads/20658/
# suggests read ahead: adaptive
# neither of those are using 3108 though...
# here's my settings on mfid0
# other thoughts are possibly to update firmware on lsi card or update driver.
# I understand my use of 3108 is non optimal - if I purchase an lsi 9300 12gb hba, will I be able to simply import my pool or will it require drive reformat since they are raid0 formatted?
# FreeNAS-9.3-STABLE-201512121950
# from /var/log/messages before system reboot due to watchdog timeout
Aug 8 09:37:41 freenas mfi0: COMMAND 0xfffffe0001330550 TIMEOUT AFTER 975 SECONDS
# I'm using lsi3108 in jbod mode
Code:
[root@freenas] ~# mfiutil show adapter mfi0 Adapter: Product Name: LSI 3108 MegaRAID Serial Number: Firmware: 24.7.0-0026 RAID Levels: JBOD, RAID0, RAID1, RAID5, RAID6, RAID10, RAID50 Battery Backup: not present NVRAM: 32K Onboard Memory: 2048M Minimum Stripe: 64k Maximum Stripe: 1M
# some posts of others with these issues point to changing read ahead and drive caching settings as a potential fix.
# https://forums.freenas.org/index.php?threads/lsi-megaraid-sas-9261-8i-timeout-with-write-back.5960/
# suggests drive write cache: disabled (what is default?)
# https://forums.freebsd.org/threads/20658/
# suggests read ahead: adaptive
# neither of those are using 3108 though...
# here's my settings on mfid0
Code:
[root@freenas] ~# mfiutil cache mfid0 mfi0 volume mfid0 cache settings: I/O caching: disabled write caching: write-through write cache with bad BBU: disabled read ahead: adaptive drive write cache: default
# other thoughts are possibly to update firmware on lsi card or update driver.
# I understand my use of 3108 is non optimal - if I purchase an lsi 9300 12gb hba, will I be able to simply import my pool or will it require drive reformat since they are raid0 formatted?
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