tree 4fffdcfc577469993619857c9dee4fa753d14589
parent e0f1147cc9512d3610d2f2a0f069690661444703
author Dexuan Cui <decui@microsoft.com> 1411707124 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1415384009 -0800

Tools: hv: vssdaemon: ignore the EBUSY on multiple freezing the same partition

If a partition appears mounted more than once in /proc/mounts, vss_do_freeze()
succeeds only for the first time and gets EBUSY (on freeze) or EINVAL (on
thaw) for the second time. The patch ignores these to make the backup feature
work.

Also improved the error handling in case a freeze operation fails.

Signed-off-by: Dexuan Cui <decui@microsoft.com>
Reviewed-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>