tree c736dc9a52677e29b4dfeb3061da5111edbb9454
parent f88fb981183e71daf40bbd84bc8251bbf7b59e19
author Mikulas Patocka <mpatocka@redhat.com> 1255731496 +0100
committer Alasdair G Kergon <agk@redhat.com> 1255731496 +0100

dm snapshot: require non zero chunk size by end of ctr

If we are creating snapshot with memory-stored exception store, fail if
the user didn't specify chunk size. Zero chunk size would probably crash
a lot of places in the rest of snapshot code.

Cc: stable@kernel.org
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Reviewed-by: Jonathan Brassow <jbrassow@redhat.com>
Reviewed-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>