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From: Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To: Alejandro Imass <aimass@yabarana.com>
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Cc: FreeBSD Questions <freebsd-questions@freebsd.org>
Subject: Re: UFS Crash and directories now missing
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> I somewhat agree, but it wasn't a person. I am the only administrator,
> the only one with root access. The jails were effectively moved to the
> /usr/local/etc/apache22 of the single that survived at the top level.
> I'm thinking something between mount, EzJail, the journal and the way
> MySQL created a great deal of head contention, so something must have
> gotten corrupted at the directory level like you state, but the
> strange part is no _data_ corruption as such, because I was able to
> physically archive the jails, move them to the correct directory and

no matter what you do FreeBSD DOES NOT ramdomly move directories. if you 
are sure you didn't move it yourself then it must be machine 
hardware problem but still unlikely.