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Re: hardware or software bug?



Hi,

On Tue, Apr 16, 2002 at 09:34:45AM -0700, Amit D Chaudhary wrote:
 
> Matt Bernstein wrote:
>  > At 14:20 +0100 Stephen C. Tweedie wrote:
>  >>More seriously, since 2.4.11, there's a page-cache/buffer-cache
>  >>aliasing problem which can lead to this being hit in ext3 if you
>  >>merely read from the buffered block device on which the fs sits.  This
>  >>can happen, for example, if you dump(8) a live filesystem.  I've got a
>  >>fix pending for the ext3 side of that problem, and have posted the
>  >>core VFS fix to l-k.
>  >
>  > *blush* We dump our filesystems live. I bet we're not the only ones.
>  >
> Short of lvm, is there any other way to backup a ext3 live filesystem, 
> that is say one mounted as /, /usr, etc and have it as a clean(empty 
> journal) backup copy?

rsync, tar etc. will all do backups well.  rsync in particular is
pretty smart about doing copies between full filesystems.

--Stephen





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