debian/patches/pve/0018-block-rbd-disable-rbd_cache_writethrough_until_flush.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Alexandre Derumier <aderumier@odiso.com>
   3 Date: Tue, 26 Jul 2016 16:51:00 +0200
   4 Subject: [PATCH] block: rbd: disable rbd_cache_writethrough_until_flush with
   5  cache=unsafe
   6
   7 Signed-off-by: Alexandre Derumier <aderumier@odiso.com>
   8 ---
   9  block/rbd.c | 4 ++++
  10  1 file changed, 4 insertions(+)
  11
  12 diff --git a/block/rbd.c b/block/rbd.c
  13 index a76a5e8755..a33738a254 100644
  14 --- a/block/rbd.c
  15 +++ b/block/rbd.c
  16 @@ -642,6 +642,10 @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
  17          rados_conf_set(s->cluster, "rbd_cache", "true");
  18      }
  19
  20 +    if (flags & BDRV_O_NO_FLUSH) {
  21 +       rados_conf_set(s->cluster, "rbd_cache_writethrough_until_flush", "false");
  22 +    }
  23 +
  24      r = rados_connect(s->cluster);
  25      if (r < 0) {
  26          error_setg_errno(errp, -r, "error connecting");
  27 --
  28 2.11.0
  29