now zfs will wait 5 sec if error msg is "dataset is busy"

Signed-off-by: Wolfgang Link <w.l...@proxmox.com>
---
 PVE/Storage/ZFSPoolPlugin.pm |   18 ++++++++++++++++--
 1 file changed, 16 insertions(+), 2 deletions(-)

diff --git a/PVE/Storage/ZFSPoolPlugin.pm b/PVE/Storage/ZFSPoolPlugin.pm
index 5cbd1b2..d8721a4 100644
--- a/PVE/Storage/ZFSPoolPlugin.pm
+++ b/PVE/Storage/ZFSPoolPlugin.pm
@@ -166,7 +166,7 @@ sub zfs_request {
         $msg .= "$line\n";
     };
 
-    run_command($cmd, outfunc => $output, timeout => $timeout);
+    run_command($cmd, errmsg => "ERROR", outfunc => $output, timeout => 
$timeout);
 
     return $msg;
 }
@@ -291,7 +291,21 @@ sub zfs_create_zvol {
 sub zfs_delete_zvol {
     my ($class, $scfg, $zvol) = @_;
 
-    $class->zfs_request($scfg, undef, 'destroy', '-r', "$scfg->{pool}/$zvol");
+    my $ret =" ";
+
+    for(my $i = 0; $ret && $i < 6; $i++){
+
+       eval {$ret =  $class->zfs_request($scfg, undef, 'destroy', '-r', 
"$scfg->{pool}/$zvol");};
+       if ($ret = $@) {
+           if ($ret =~ m/^ERROR:(.*): dataset is busy.*/) {
+               sleep(1);
+           } else {
+               die $ret;
+           }
+       }
+    }
+
+    die $ret if $ret;
 }
 
 sub zfs_list_zvol {
-- 
1.7.10.4


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