Data recovery

[jbk at mail2.gis.net (jbk)]

Jerry Feldman wrote:

> Recovering the root file system is a bit different from other file
> systems. When fsck runs during the boot process, the root file system
> is mounted read-only and the other file systems are not mounted. It is
> ok to do a full recovery on a file system that is not mounted, but not
> root. The reiser fsck utility will not allow you to do a complete
> repair on root unless you boot from recovery. Ext2 and ext3 do allow a
> repair of the root file system when your system is running, but that
> file system MUST be mounted read-only. If you try to repair a mounted
> file system that is mounted as read-write, the system will write the
> in-memory data back onto that file system, and then you are screwed.

Yup, That is what happened to me. And since then I use the 
rescue disk. I had forgotten the reason why. You reminded me 
I need to update my rescue disk to the current release.

> The best practice is to boot from a recovery disk and perform the
> repair while the root file system is unmounted. (This is true with all
> Linux and Unix systems). You can then mount that file system from the
> recovery disk and check it out. 
> (Make sure that your recovery disk contains the proper file system and
> utilities at the same rev. of what your system is running. 
> 

Thanks,

	Jim Kelly-Rand