From owner-freebsd-bugs@freebsd.org Sat Oct 5 14:13:34 2019 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id ACC971341AC for ; Sat, 5 Oct 2019 14:13:34 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (unknown [127.0.1.3]) by mx1.freebsd.org (Postfix) with ESMTP id 46lpct3yJWz3HDY for ; Sat, 5 Oct 2019 14:13:34 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 87B9A1341AB; Sat, 5 Oct 2019 14:13:34 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 876DF1341AA for ; Sat, 5 Oct 2019 14:13:34 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46lpct2wXvz3HDT for ; Sat, 5 Oct 2019 14:13:34 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 48A0FE173 for ; Sat, 5 Oct 2019 14:13:34 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id x95EDY74015464 for ; Sat, 5 Oct 2019 14:13:34 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id x95EDYNk015461 for bugs@FreeBSD.org; Sat, 5 Oct 2019 14:13:34 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 241083] zfs: zpool import seems to probe all snapshots Date: Sat, 05 Oct 2019 14:13:34 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 12.0-STABLE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: d8zNeCFG@aon.at X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Oct 2019 14:13:34 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D241083 Bug ID: 241083 Summary: zfs: zpool import seems to probe all snapshots Product: Base System Version: 12.0-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: d8zNeCFG@aon.at Scenario: - Homegrown server, 6 disks - Each disk partitioned: ca. 3/4 for the first zpool ("hal.1"), ca. 1/5 for= the second zpool, rest for misc. stuff - The first zpool is imported at boot (from unencrypted "3/4" partitions), = it contains about 300 zfs filesystems + 20 volumes, where the latter are frequently partitioned (MBR, BSD, MBR + BSD, because they are used as iSCSI disks for virtualized installations of various operating systems) - The second zpool is manually imported (when needed) from the encrypted partitions (each of the "1/5" partitions is encrypted), it contains about 20 filesystems (incl. volumes) - Backups are kept by regularly taking recursive snapshots on both pools, a= bout 10 backups are kept at any time - This results in over 500 device entries in /dev/zvol (e.g., "/dev/zvol/hal.1/1/vdisks/925@backup.2019-09-21.21:59:27s2a") - At some point, the second zpool is imported Result: - The import takes a long time - Using "gstat -a", it can be observed that there is much activity on each = of the devices in /dev/zvol/... during the time it takes to import the second = pool Expected result: - Importing a pool should not look at snapshot but only "normal" devices, w= here "normal" could be defined either as not containing a "@" or as being read/w= rite or by trying the devices with the shortest path first (or maybe there is a better discriminator) in order to speed up the import - Maybe (by default) it should not look at devices in /dev/zvol at all beca= use normally one would not want to create a pool from devices in another pool --=20 You are receiving this mail because: You are the assignee for the bug.=