Re: umount -r

Karel Zak
2013-05-13T12:41:27Z

On Thu, May 09, 2013 at 11:05:58PM -0500, Bruce Dubbs wrote:
> We have as a part of our shutdown scripts:
>
> umount -a -d -r -t notmpfs,nosysfs,nodevtmpfs,noproc
>
> What we expect is that the rootfs (/) will fail, but be remounted read only.
> This doesn't seem to be happening because we get messages about recovery
> needed during the next boot.
>
> We can work around it by adding
>
> mount -n -o remount,ro /
>
> I have a report that umount works as expected in version 2.21.2, but not in
> 2.22.2 or later. I this a misunderstanding about umount or a bug?

Please, run

LIBMOUNT_DEBUG=0xffff umount -a -d -r -t notmpfs,nosysfs,nodevtmpfs,noproc &> umount.log

and send me the log file.

Karel

--
Karel Zak <kzak@redhat.com>