From owner-freebsd-bugs@FreeBSD.ORG Wed Nov 7 10:20:01 2012 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 62217E1 for ; Wed, 7 Nov 2012 10:20:01 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:1900:2254:206c::16:87]) by mx1.freebsd.org (Postfix) with ESMTP id 34ABF8FC1B for ; Wed, 7 Nov 2012 10:20:01 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.5/8.14.5) with ESMTP id qA7AK1M7033509 for ; Wed, 7 Nov 2012 10:20:01 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.5/8.14.5/Submit) id qA7AK1o8033508; Wed, 7 Nov 2012 10:20:01 GMT (envelope-from gnats) Resent-Date: Wed, 7 Nov 2012 10:20:01 GMT Resent-Message-Id: <201211071020.qA7AK1o8033508@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Petri Helenius Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 0948DBE4 for ; Wed, 7 Nov 2012 10:13:12 +0000 (UTC) (envelope-from pete@zfsmaster.secroom.net) Received: from zfsmaster.secroom.net (r068.secroom.net [193.19.137.68]) by mx1.freebsd.org (Postfix) with ESMTP id 8E6408FC14 for ; Wed, 7 Nov 2012 10:13:10 +0000 (UTC) Received: from zfsmaster.secroom.net (localhost [127.0.0.1]) by zfsmaster.secroom.net (8.14.5/8.14.5) with ESMTP id qA76is7I006116 for ; Wed, 7 Nov 2012 06:44:54 GMT (envelope-from pete@zfsmaster.secroom.net) Received: (from root@localhost) by zfsmaster.secroom.net (8.14.5/8.14.5/Submit) id qA76irdQ006115; Wed, 7 Nov 2012 06:44:53 GMT (envelope-from pete) Message-Id: <201211070644.qA76irdQ006115@zfsmaster.secroom.net> Date: Wed, 7 Nov 2012 06:44:53 GMT From: Petri Helenius To: FreeBSD-gnats-submit@FreeBSD.org X-Send-Pr-Version: 3.113 Subject: kern/173442: ZFS ZVOL snapshot device nodes are not removed X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: Petri Helenius List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 07 Nov 2012 10:20:01 -0000 >Number: 173442 >Category: kern >Synopsis: ZFS ZVOL snapshot device nodes are not removed >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Nov 07 10:20:00 UTC 2012 >Closed-Date: >Last-Modified: >Originator: Petri Helenius >Release: FreeBSD 9.1-RC2 amd64 >Organization: >Environment: System: FreeBSD zfsmaster.secroom.net 9.1-RC2 FreeBSD 9.1-RC2 #0: Sun Oct 28 09:06:44 UTC 2012 pete@zfsmaster.secroom.net:/usr/obj/usr/src/sys/XENSR amd64 >Description: The zvol snapshots are not removed from /dev/zvol until reboot >How-To-Repeat: zfsmaster# zfs create zroot/iscsi zfsmaster# zfs create -V 50M zroot/iscsi/test1 zfsmaster# zfs create -V 50M zroot/iscsi/test2 zfsmaster# cd /dev/zvol/zroot/ zfsmaster# cd /dev/zvol/zroot/ iscsi/ swap% swap@1% swap@3% swap@6% zfsmaster# cd /dev/zvol/zroot/iscsi/ zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 zfsmaster# zfs snapshot -r zroot/iscsi@snap1 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 zfsmaster# zfs snapshot -r zroot/iscsi@snap2 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 zfsmaster# zfs snapshot -r zroot/iscsi@snap3 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 107 Nov 7 06:36 test1@snap3 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 crw-r----- 1 root operator 0, 108 Nov 7 06:36 test2@snap3 zfsmaster# zfs snapshot -r zroot/iscsi@snap4 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 107 Nov 7 06:36 test1@snap3 crw-r----- 1 root operator 0, 109 Nov 7 06:36 test1@snap4 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 crw-r----- 1 root operator 0, 108 Nov 7 06:36 test2@snap3 crw-r----- 1 root operator 0, 110 Nov 7 06:36 test2@snap4 zfsmaster# zfs destroy -r zroot/iscsi@snap2 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 107 Nov 7 06:36 test1@snap3 crw-r----- 1 root operator 0, 109 Nov 7 06:36 test1@snap4 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 crw-r----- 1 root operator 0, 108 Nov 7 06:36 test2@snap3 crw-r----- 1 root operator 0, 110 Nov 7 06:36 test2@snap4 zfsmaster# zfs destroy -r zroot/iscsi@snap1 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 107 Nov 7 06:36 test1@snap3 crw-r----- 1 root operator 0, 109 Nov 7 06:36 test1@snap4 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 crw-r----- 1 root operator 0, 108 Nov 7 06:36 test2@snap3 crw-r----- 1 root operator 0, 110 Nov 7 06:36 test2@snap4 zfsmaster# zfs destroy -r zroot/iscsi@snap3 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 107 Nov 7 06:36 test1@snap3 crw-r----- 1 root operator 0, 109 Nov 7 06:36 test1@snap4 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 crw-r----- 1 root operator 0, 108 Nov 7 06:36 test2@snap3 crw-r----- 1 root operator 0, 110 Nov 7 06:36 test2@snap4 zfsmaster# zfs destroy -r zroot/iscsi@snap4 zfsmaster# ls -l total 0 crw-r----- 1 root operator 0, 100 Nov 7 06:35 test1 crw-r----- 1 root operator 0, 103 Nov 7 06:36 test1@snap1 crw-r----- 1 root operator 0, 105 Nov 7 06:36 test1@snap2 crw-r----- 1 root operator 0, 107 Nov 7 06:36 test1@snap3 crw-r----- 1 root operator 0, 109 Nov 7 06:36 test1@snap4 crw-r----- 1 root operator 0, 102 Nov 7 06:35 test2 crw-r----- 1 root operator 0, 104 Nov 7 06:36 test2@snap1 crw-r----- 1 root operator 0, 106 Nov 7 06:36 test2@snap2 crw-r----- 1 root operator 0, 108 Nov 7 06:36 test2@snap3 crw-r----- 1 root operator 0, 110 Nov 7 06:36 test2@snap4 zfsmaster# dd if=test1@snap1 of=/dev/null dd: test1@snap1: No such file or directory zfsmaster# zfs snapshot -r zroot/iscsi@snap5 zfsmaster# dd if=test1@snap5 of=/dev/null 102400+0 records in 102400+0 records out 52428800 bytes transferred in 2.021984 secs (25929383 bytes/sec) zfsmaster# >Fix: >Release-Note: >Audit-Trail: >Unformatted: