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added slightly modified is_zfs_busy sub from syncoid to sanoid

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Jim Salter 2014-11-17 10:15:05 -05:00
parent a8b57203d0
commit 763e63e5c2
1 changed files with 26 additions and 0 deletions
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@ -946,3 +946,29 @@ sub writelock {
print FH "$mutex\n";
close FH;
}
sub iszfsbusy {
# check to see if ZFS filesystem passed in as argument currently has a zfs send or zfs receive process referencing it.
# return true if busy (currently being sent or received), return false if not.
my $fs = shift;
my $pscmd = '/bin/ps';
if ($debug) { print "DEBUG: checking to see if $fs on $rhost is already in zfs receive using $pscmd axo args= ...\n"; }
open PL, "$pscmd axo args= |";
my @processes = <PL>;
close PL;
foreach my $process (@processes) {
if ($debug) { print "DEBUG: checking process $process...\n"; }
if ($process =~ /zfs *(send|receive).*$fs/) {
# there's already a zfs send/receive process for our target filesystem - return true
if ($debug) { print "DEBUG: process $process matches target $fs!\n"; }
return 1;
}
}
# no zfs receive processes for our target filesystem found - return false
return 0;
}