ZFS panic under extreme circumstances (2/3 disks corrupted)

Kip Macy kmacy at freebsd.org
Sun May 24 19:37:45 UTC 2009

> After overwriting the *beginning* of disk2 and disk3 as well, "zpool scrub"
> appears to hang. Two vdev failures on the console, and zpool status hangs as
> well. No panic this time around (I've waited 5 minutes and nothing appears
> to happen, but the computer is usable on other ttys). The failmode property
> was set to the default, i.e. wait, in both cases.
> Regards,
> Thomas

I'm more interested in the hang than the panic. "fletcher2" has known
limitations in terms of the data integrity guarantees it can provide.
If you're interested in pursuing this line of inquiry you should
switch to a checksum with stronger guarantees.


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