GELI file systems unusable after "glabel label" operations
ivoras at freebsd.org
Thu Jan 14 09:30:54 UTC 2010
Scott Bennett wrote:
> I used "glabel label" to label each of the file systems I have on external
> disk drives. Unfortunately, afterward I am now unable to "geli attach" any of
> the GELI-encrypted file systems. The system is FreeBSD 7.2-STABLE.
Hmm, did you say you had geli-encrypted drives, then you have
overwritten the last sector with glabel, and then you are surprised you
cannot get to the data any more?
> Or have I just lost everything in the encrypted
> file systems?
I think you did.
From the geli(8) man page:
"init ... The last provider’s sector is used to store metadata."
From the glabel(8) man page:
"label ... metadata is stored in a provider’s last sector."
If you did "geli init ... da0" and then "glabel label ... da0" then you
have lost the geli metadata, which contains keys, etc. You might recover
this, though, by reading geli(8) about the "restore" command.
There is no way you can label your devices after you applied geli to
them (which is one of the points of using geli...). You could destroy
the geli layer (and the data), apply the label and then apply geli to
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