Re: validating root filesystem ...

["L. A. Walsh" <xfs@xxxxxxxxx>]

Chris Wedgwood wrote:
> On Thu, Feb 02, 2006 at 12:41:42AM -0800, L. A. Walsh wrote:
>   
> > Anyone know why I would get a persistent message out of
> > xfs_check?
> >     
> Don't run it.  Especially not on a mounted filesystem, even mounted
> RO.
>
>   
---
   Hi Chris...then, this begs the question:

   How should one check or repair a root file system? 

   I believe I understand that mounting a root file system "ro" will
still replay any outstanding log operations.  However,
after those operations are played, if we only have "r/o" specified
in the mount options, then future actions on the disk should be
limited to "read" operations, no?

   Isn't the journal only used when "writing" to disk"?
I'm not clear why xfs_check or xfs_repair shouldn't be usable to
validate the root disk image.

Thanks,
Linda