Re:In Praise of ZFS on Linux's ZED 'ZFS Event Daemon'
by simcop2387 on Monday July 20, 2020 @07:52PM
(#23903102)
I've now seen two sata controller failures thanks to zfs. One on my own machine amd one on my parents. Both presented as if a drive failed but it was actually the port on the controller that failed. It'd start up fine but randomly reads (and probably writes) would just be corrupted and the disk would eventually stop talking. Changing disks wouldn't fix it, which is how I kmew it was the controller but replacing the controller made everything happy. It the resilvered with no issues.
I started doing that because I saw corruptions on magnetic disks at home. Some files were silently corrupted. I had no redundancy. I didn't know which files were "good" either.
So now I have one multi disk machine running FreeBSD with zfs. Works well. Hardware isn't especially fancy. In the time since I have seen it catch hardware failures. I have seen it call out specific files as corrupt. This is a huge improvement over how I saw bad disks surface in the past.