gmirror/gconcat: mkdir causes system reboot

[Pawel Jakub Dawidek]

On Mon, Jul 31, 2006 at 01:51:25AM -0700, R. B. Riddick wrote:
> --- Brent Hostetler <brenthostetler at gmail.com> wrote:
> > These errors repeated for about  3meg log file of errors.
> >
> Hmm... Maybe u mounted ur file system unclean somewhen (e. g. by pressing
> CTRL+C during the boot process) and then the errors escalated cataclysmically?
> :-)
> 
> Or maybe ur gmirror's where out of sync due to some strange administrative
> trick or due to a system crash during synchronization (so that just one half of
> the mirror had the new data, while it stayed unmentioned, that the other half
> had still the old data (this is something fsck could miss, when it just reads
> the new/good half of the mirror (e. g. because those discs r faster or because
> of a coincidence))).

Gmirror protects against such situations - on power loss or system crash
it will resynchronize mirrors.

I've heard of problems with growfs(8). Another option is incorrect addition
of the new disk to gconcat device.

-- 
Pawel Jakub Dawidek                       http://www.wheel.pl
pjd at FreeBSD.org                           http://www.FreeBSD.org
FreeBSD committer                         Am I Evil? Yes, I Am!
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