[pve-devel] [PATCH qemu-server 1/1] migrate cache-size : power of 2

[Alexandre Derumier]

qemu 2.11 need a power of 2 cache size.

"
Parameter 'xbzrle_cache_size' expects is invalid,
it should be bigger than target page size and a power of two
"

Divide the memory size by 8 instead 10
---
 PVE/QemuMigrate.pm | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/PVE/QemuMigrate.pm b/PVE/QemuMigrate.pm
index 937a855..a61e34b 100644
--- a/PVE/QemuMigrate.pm
+++ b/PVE/QemuMigrate.pm
@@ -688,9 +688,9 @@ sub phase2 {
     };
     warn $@ if $@;
 
-    # set cachesize to 10% of the total memory
+    # set cachesize to 12,5% of the total memory
     my $memory =  $conf->{memory} || $defaults->{memory};
-    my $cachesize = int($memory * 1048576 / 10);
+    my $cachesize = int($memory * 1048576 / 8);
     $self->log('info', "set cachesize: $cachesize");
     eval {
 	PVE::QemuServer::vm_mon_cmd_nocheck($vmid, "migrate-set-cache-size", value => int($cachesize));
-- 
2.11.0