fsck errors on a running system that disappear in single-user mode

Kris Kennaway kris at FreeBSD.org
Fri Mar 11 14:05:37 PST 2005

On Fri, Mar 11, 2005 at 10:07:48PM +0100, Anthony Atkielski wrote:
> Kris Kennaway writes:
> > Yes (single-user mode isn't the issue; the filesystem needs to be
> > unmounted or mounted read-only, or to be using UFS snapshots (in 5.x)
> > in order for fsck to have a consistent snapshot of the data that
> > doesn't change out from underneath it).
> Are UFS snapshots enabled by default on 5.x?

Yes, that's what background fsck uses.

>  Is this related to the
> snapshots taken during dump operations with the L option, or is it
> different?

Same.  See the manpages for more information.


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