In the default config, emulate_tpu is set to 0, which disables
unmap support. Once enabled, trim can run from guest to reclaim free
space.
Signed-off-by: Daniel Berteaud <dan...@firewall-services.com>
---
PVE/Storage/LunCmd/LIO.pm | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/PVE/Storage/LunCmd/LIO.pm b/PVE/Storage/LunCmd/LIO.pm
index 1ddc02d..f246dbb 100644
--- a/PVE/Storage/LunCmd/LIO.pm
+++ b/PVE/Storage/LunCmd/LIO.pm
@@ -250,7 +250,12 @@ my $create_lun = sub {
my $res = $execute_remote_command->($scfg, $timeout, $targetcli,
@cliparams);
die $res->{msg} if !$res->{result};
- # step 2: register lun with target
+ # step 2: enable unmap support on the backstore
+ @cliparams = ($BACKSTORE . '/' . $volname, 'set', 'attribute',
'emulate_tpu=1' );
+ $res = $execute_remote_command->($scfg, $timeout, $targetcli, @cliparams);
+ die $res->{msg} if !$res->{result};
+
+ # step 3: register lun with target
# targetcli /iscsi/iqn.2018-04.at.bestsolution.somehost:target/tpg1/luns/
create /backstores/block/foobar
@cliparams = ("/iscsi/$scfg->{target}/$tpg/luns/", 'create',
"$BACKSTORE/$volname" );
$res = $execute_remote_command->($scfg, $timeout, $targetcli, @cliparams);
--
2.21.0
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