Date: Sat, 15 Oct 2016 20:56:51 -0400 From: Greg Marsh <greg.marsh@gmail.com> To: freebsd-questions@freebsd.org Subject: Help finding out find why a ZFS pool vanished. Message-ID: <CAHtBMo6bL=_Eqejx_thFCg1u9ONWnqX30RAbWaLQYGiQD2dgEw@mail.gmail.com>
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Hello, :) A few days ago, I came home from work to find that the four disk ZFS pool which is the bulk of my home file/backup system, had logically vanished. I upgraded to FreeBSD 11.0 last week and all seemed well. Since upgrading, I had done a system backup and a scrub of both my zroot and storage pools. Storage is the one that vanished. A couple days ago, when trying to copy my desktop files to my backup system, I got NFS mount errors. I was quite sore & tired from work (after 25 years of sysadmining, I'm now doing home renovations), so I went with the Windows admin response of 'reboot everything', on both my desktop and server. Then when trying to remount the NFS shares from my FreeBSD system didn't work, I df'd on my FreeBSD server to find the /storage pool was not there. I was eventually able to get my storage pool back through 'zpool import -af' That being said, I'd like some guidance in finding out why the pool took itself offline. From there, hopefully prevent it from happening again. There were no error messages in dmesg nor /var/log/messages All the drives showed up without error in /dev and gave no indication of issue on boot. All four drives are all WD Red 2tb. All 4 drives are attached to a four port SATA card driven by a SiI3124. The SATA controller has worked without issue for me for the past couple years - at least since FreeBSD 10.1 I do run the system headless and I admit I didn't put a monitor to it before rebooting initially. I was also sloppy about my initial data gathering. :( I did eventually reboot with a monitor and the BIOS did not report nor have history of any SMART errors with any drives. Again, if anyone has any posthumous zfs troubleshooting tips, I'd appreciate them very much. Cheers, Greg
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