From owner-freebsd-bugs@freebsd.org Tue Nov 28 22:38:07 2017 Return-Path: Delivered-To: freebsd-bugs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 6DA97DF0E8A for ; Tue, 28 Nov 2017 22:38:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2001:1900:2254:206a::16:76]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 5BFF67B9E5 for ; Tue, 28 Nov 2017 22:38:07 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from bugs.freebsd.org ([127.0.1.118]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id vASMc7UB014995 for ; Tue, 28 Nov 2017 22:38:07 GMT (envelope-from bugzilla-noreply@freebsd.org) From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 223950] lower default kern.cam.da.X.delete_max to avoid ZFS TRIM timeouts Date: Tue, 28 Nov 2017 22:38:07 +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: 11.1-RELEASE X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Some People X-Bugzilla-Who: jim@ks.uiuc.edu X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: freebsd-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: 2.1.25 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 28 Nov 2017 22:38:07 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223950 Bug ID: 223950 Summary: lower default kern.cam.da.X.delete_max to avoid ZFS TRIM timeouts Product: Base System Version: 11.1-RELEASE Hardware: amd64 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: jim@ks.uiuc.edu We are seeing the issue with ZFS described at https://lists.freebsd.org/pipermail/freebsd-scsi/2015-July/006777.html where SATA SSDs on a SAS controller will time out on TRIM commands. This was the original state, with TRIM failures recorded in kstat: kern.geom.dev.delete_max_sectors: 262144 kern.cam.da.4.delete_max: 17179607040 kern.cam.da.4.delete_method: ATA_TRIM kern.cam.da.3.delete_max: 17179607040 kern.cam.da.3.delete_method: ATA_TRIM kern.cam.da.2.delete_max: 17179607040 kern.cam.da.2.delete_method: ATA_TRIM kern.cam.da.5.delete_max: 17179607040 kern.cam.da.5.delete_method: ATA_TRIM kern.cam.da.1.delete_max: 17179607040 kern.cam.da.1.delete_method: ATA_TRIM kern.cam.da.0.delete_max: 17179607040 kern.cam.da.0.delete_method: ATA_TRIM kern.cam.ada.0.delete_method: DSM_TRIM vfs.zfs.trim.max_interval: 1 vfs.zfs.trim.timeout: 30 vfs.zfs.trim.txg_delay: 32 vfs.zfs.trim.enabled: 1 vfs.zfs.vdev.trim_max_pending: 10000 vfs.zfs.vdev.bio_delete_disable: 0 vfs.zfs.vdev.trim_max_active: 64 vfs.zfs.vdev.trim_min_active: 1 vfs.zfs.vdev.trim_on_init: 1 hw.nvd.delete_max: 1073741824 kstat.zfs.misc.arcstats.deleted: 138850 kstat.zfs.misc.zio_trim.failed: 9399097 kstat.zfs.misc.zio_trim.unsupported: 0 kstat.zfs.misc.zio_trim.success: 792148930 kstat.zfs.misc.zio_trim.bytes: 31513520795648 Our current workaround is to lower delete_max (for all drives): sysctl kern.cam.da.0.delete_max=3D536870912 I suggest a lower default value than the current 17179607040. --=20 You are receiving this mail because: You are the assignee for the bug.=