drbd: Allow to change data-integrity-alg on the fly

Browse source

The main purpose of this is to allow to turn data integrity checking on
and off on demand without causing interruptions.

Implemented by allocating tconn->peer_integrity_tfm only when receiving
a P_PROTOCOL message.  l accesses to tconn->peer_integrity_tf happen in
worker context, and no further synchronization is necessary.

On the sender side, tconn->integrity_tfm is modified under
tconn->data.mutex, and a P_PROTOCOL message is sent whenever.  All
accesses to tconn->integrity_tfm already happen under this mutex.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

...

This commit is contained in:

Andreas Gruenbacher 2011-04-28 21:47:21 +02:00 • committed by Philipp Reisner

parent a7eb7bdf58

commit 88104ca458

3 changed files with 40 additions and 40 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

drivers/block/drbd/drbd_main.c

View file

22

drivers/block/drbd/drbd_nl.c

View file

54

drivers/block/drbd/drbd_receiver.c

View file