debian/patches/pve/0032-rbd-fix-cache-mode-behavior.patch

   1 From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
   2 From: Wolfgang Bumiller <w.bumiller@proxmox.com>
   3 Date: Mon, 26 Mar 2018 14:20:31 +0200
   4 Subject: [PATCH] rbd: fix cache mode behavior
   5
   6 Either the cache mode asks for a cache or not. There's no
   7 point in having a "temporary" cache mode. This option AFAIK
   8 was introduced as a hack for ancient virtio drivers. If
   9 anything, we should have a separate option for it. Better
  10 yet, VMs affected by the related issue should simply
  11 explicitly choose writethrough.
  12
  13 Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
  14 ---
  15  block/rbd.c | 2 --
  16  1 file changed, 2 deletions(-)
  17
  18 diff --git a/block/rbd.c b/block/rbd.c
  19 index c4732a4b12..0374f3db27 100644
  20 --- a/block/rbd.c
  21 +++ b/block/rbd.c
  22 @@ -643,9 +643,7 @@ static int qemu_rbd_open(BlockDriverState *bs, QDict *options, int flags,
  23          rados_conf_set(s->cluster, "rbd_cache", "true");
  24      }
  25
  26 -    if (flags & BDRV_O_NO_FLUSH) {
  27         rados_conf_set(s->cluster, "rbd_cache_writethrough_until_flush", "false");
  28 -    }
  29
  30      r = rados_connect(s->cluster);
  31      if (r < 0) {
  32 --
  33 2.11.0
  34