tree c04255840de5e70a0aa2880d1f1c8bfe1b2e7817
parent 104655fd4dcebd50068ef30253a001da72e3a081
author Joe Thornber <ejt@redhat.com> 1332956489 +0100
committer Alasdair G Kergon <agk@redhat.com> 1332956489 +0100

dm thin: add pool target flags to control discard

Add dm thin target arguments to control discard support.

ignore_discard: Disables discard support

no_discard_passdown: Don't pass discards down to the underlying data
device, but just remove the mapping within the thin provisioning target.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>