[libvirt] [PATCH] qemu.conf: Mention virtlockd in @lock_manager description

Michal Privoznik mprivozn at redhat.com
Wed Mar 12 07:59:42 UTC 2014


When I played with virtlockd I was stunned by lacking
documentation. My frustration got bigger when I had to
read the patches to get the correct value to set in
qemu.conf.

Moreover, from pure libvirt-pride  I'm changing commented
value from sanlock to lockd. We want to favor our own
implementation after all.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/qemu/qemu.conf | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/qemu/qemu.conf b/src/qemu/qemu.conf
index e436084..f0e802f 100644
--- a/src/qemu/qemu.conf
+++ b/src/qemu/qemu.conf
@@ -402,11 +402,13 @@
 #allow_disk_format_probing = 1
 
 
-# To enable 'Sanlock' project based locking of the file
-# content (to prevent two VMs writing to the same
-# disk), uncomment this
+# In order to prevent accidentally starting two domains that
+# share one writable disk, libvirt offers two approaches for
+# locking files. The first one is sanlock, the other one,
+# virtlockd, is then our own implementation. Accepted values
+# are "sanlock" and "lockd".
 #
-#lock_manager = "sanlock"
+#lock_manager = "lockd"
 
 
 
-- 
1.9.0




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