[dm-crypt] should luksClose command wait for sync ?

Arno Wagner arno at wagner.name
Wed Jan 11 18:37:50 CET 2012

I think the issue here is that mkfs.ext2 calls fsync(), but
for some reason fsync() does not flush to disk or only flushes
one layer. I would expect that is a current bug/"feature" of
the device-mapper, although I dimly remember there were issues
with fsync() itself.

Better leave the sync in there for the time being.


On Tue, Jan 10, 2012 at 01:51:21PM +0100, Toralf F??rster wrote:
> WRT to this discussion:
> https://forums.gentoo.org/viewtopic-p-6925154.html#6925154
> I'm wondering whether a command sequence like the follwoing needs a sync or 
> not :
> $> mkfs.ext2 /dev/mapper/foo && sync && cryptsetup luksClose foo
> -- 
> MfG/Sincerely
> Toralf F??rster
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Arno Wagner, Dr. sc. techn., Dipl. Inform., CISSP -- Email: arno at wagner.name 
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with doubt and indecision. -- Bertrand Russell 

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