From owner-freebsd-fs@freebsd.org Tue Dec 15 14:52:53 2015 Return-Path: Delivered-To: freebsd-fs@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 B7184A443E4 for ; Tue, 15 Dec 2015 14:52:53 +0000 (UTC) (envelope-from bengta@sics.se) Received: from mail-lb0-x235.google.com (mail-lb0-x235.google.com [IPv6:2a00:1450:4010:c04::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 2C6771F2E for ; Tue, 15 Dec 2015 14:52:53 +0000 (UTC) (envelope-from bengta@sics.se) Received: by mail-lb0-x235.google.com with SMTP id u9so7181263lbp.2 for ; Tue, 15 Dec 2015 06:52:53 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sics-se.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:in-reply-to:references:user-agent:date :message-id:mime-version:content-type; bh=pEFaS1lMaRtPNvMyxprp229I7t2KCU5JRYeV0O4bHqI=; b=xYouEZvPM5DgibyGv8SGALt7NJOGlYeiBnk0M6N1nwVFLx8ncTCE1JsQWhBxigJuY8 2F+sm3cM4lLW+ti23EQMF6ix4DDEfQ3tr+BTmjx3cKGt2+L8FuvMma+SBjU07lQEmkjW ysD1fsfF3/OKun5cX4oRjA/4FW97/EVtXtHANqhBGiHZ7+OaHXtyo8Bar7JcCY9Nat76 fblj2VS4cfsFTAI/FU3yVKSde58/cW4RkPw5DItuIfZk2E9DI/wmCyDezUFb0IPI8rpv Hy1LCqOsVErc3bFkvVcj13+FyrFTzoa3VCdyCeu7wBW3WxN6U03GwWBCr+PskIeG2t87 WoVQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references :user-agent:date:message-id:mime-version:content-type; bh=pEFaS1lMaRtPNvMyxprp229I7t2KCU5JRYeV0O4bHqI=; b=RdO7Hq3gbM2RRAMGjF6xc8lHqek0BldwqoLU8usMOVt7rZxfZO9lzbmIOZlhgtj0Fy Yu+mEtYMkHGlYf0FGLb6zEGQkqbKovSnXSAu1IrWSnCdaLUxtTBi3W0IqhBOGbVC4+Q1 USTZRMHqkUApopaN11s1JI/vVrh0iiILlHDfmlMYzT3/ZHlShZa/Lv22GIMOqU7Yoz3n 2PkATSiR4Y6Cuxf5M8cSctQ5/LwVUL/O0BCCa9YlWh5JCboXFCK98K9mJws+1TviFg8h bogJn6V7TjoiXEk7BXwD6T47abxFwB3tgox1eeW3pAwTEEgYMQ1eh71nA//xt898+Vby L2qA== X-Gm-Message-State: ALoCoQnyav9lCNnegWlbskoWDFhgp3I09BFzrdNZNkzSKYIOJnePCKLaN00JLx85cz/olvb+tt/AAKqsHnVQ4W00W5AybQXEuA== X-Received: by 10.112.158.100 with SMTP id wt4mr6891987lbb.46.1450191171200; Tue, 15 Dec 2015 06:52:51 -0800 (PST) Received: from P142s.sics.se (P142s.sics.se. [193.10.66.127]) by smtp.gmail.com with ESMTPSA id us1sm262766lbc.25.2015.12.15.06.52.50 (version=TLS1 cipher=AES128-SHA bits=128/128); Tue, 15 Dec 2015 06:52:50 -0800 (PST) Received: from P142s.sics.se (localhost [127.0.0.1]) by P142s.sics.se (8.15.2/8.15.2) with ESMTP id tBFEqDp7003102; Tue, 15 Dec 2015 15:52:13 +0100 (CET) (envelope-from bengta@P142s.sics.se) Received: (from bengta@localhost) by P142s.sics.se (8.15.2/8.15.2/Submit) id tBFEqCMM003101; Tue, 15 Dec 2015 15:52:12 +0100 (CET) (envelope-from bengta@P142s.sics.se) From: Bengt Ahlgren To: Steven Hartland Cc: freebsd-fs@freebsd.org Subject: Re: ZFS hang in zfs_freebsd_rename In-Reply-To: <567022FB.1010508@multiplay.co.uk> (Steven Hartland's message of "Tue, 15 Dec 2015 14:26:03 +0000") References: <567022FB.1010508@multiplay.co.uk> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.5 (berkeley-unix) Date: Tue, 15 Dec 2015 15:52:12 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Dec 2015 14:52:53 -0000 Yes, that is on the todo list... So this is likely fixed then in 10.x? Bengt Steven Hartland writes: > Not a surprise in 9.x unfortunately, try upgrading to 10.x > > On 15/12/2015 12:51, Bengt Ahlgren wrote: >> We have a server running 9.3-REL which currenly has two quite large zfs >> pools: >> >> NAME SIZE ALLOC FREE CAP DEDUP HEALTH ALTROOT >> p1 18.1T 10.7T 7.38T 59% 1.00x ONLINE - >> p2 43.5T 29.1T 14.4T 66% 1.00x ONLINE - >> >> It has been running without any issues for some time now. Once, just >> now, processes are getting stuck and impossible to kill on accessing a >> particular directory in the p2 pool. That pool is a 2x6 disk raidz2. >> >> One process is stuck in zfs_freebsd_rename, and other processes >> accessing that particular directory also get stuck. The system is now >> almost completely idle. >> >> Output from kgdb on the running system for that first process: >> >> Thread 651 (Thread 102157): >> #0 sched_switch (td=0xfffffe0b14059920, newtd=0xfffffe001633e920, flags=) >> at /usr/src/sys/kern/sched_ule.c:1904 >> #1 0xffffffff808f4604 in mi_switch (flags=260, newtd=0x0) at /usr/src/sys/kern/kern_synch.c:485 >> #2 0xffffffff809308e2 in sleepq_wait (wchan=0xfffffe0135b60488, >> pri=96) at /usr/src/sys/kern/subr_sleepqueue.c:618 >> #3 0xffffffff808cf922 in __lockmgr_args (lk=0xfffffe0135b60488, flags=524544, ilk=0xfffffe0135b604b8, >> wmesg=, pri=, timo=, >> file=0xffffffff80f0d782 "/usr/src/sys/kern/vfs_subr.c", line=2337) at /usr/src/sys/kern/kern_lock.c:221 >> #4 0xffffffff80977369 in vop_stdlock (ap=) at lockmgr.h:97 >> #5 0xffffffff80dd4a04 in VOP_LOCK1_APV (vop=0xffffffff813e8160, a=0xffffffa07f935520) at vnode_if.c:2052 >> #6 0xffffffff80998c17 in _vn_lock (vp=0xfffffe0135b603f0, flags=524288, >> file=0xffffffff80f0d782 "/usr/src/sys/kern/vfs_subr.c", line=2337) at vnode_if.h:859 >> #7 0xffffffff8098b621 in vputx (vp=0xfffffe0135b603f0, func=1) at /usr/src/sys/kern/vfs_subr.c:2337 >> #8 0xffffffff81ac7955 in zfs_rename_unlock (zlpp=0xffffffa07f9356b8) >> at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:3609 >> #9 0xffffffff81ac8c72 in zfs_freebsd_rename (ap=) >> at /usr/src/sys/modules/zfs/../../cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c:4039 >> #10 0xffffffff80dd4f04 in VOP_RENAME_APV (vop=0xffffffff81b47d40, a=0xffffffa07f9358e0) at vnode_if.c:1522 >> #11 0xffffffff80996bbd in kern_renameat (td=, oldfd=, >> old=, newfd=-100, new=0x1826a9af00 , >> pathseg=) at vnode_if.h:636 >> #12 0xffffffff80cd228a in amd64_syscall (td=0xfffffe0b14059920, traced=0) at subr_syscall.c:135 >> #13 0xffffffff80cbc907 in Xfast_syscall () at /usr/src/sys/amd64/amd64/exception.S:396 >> ---Type to continue, or q to quit--- >> #14 0x0000000800cc1acc in ?? () >> Previous frame inner to this frame (corrupt stack?) >> >> Full procstat -kk -a and kgdb "thread apply all bt" can be found here: >> >> https://www.sics.se/~bengta/ZFS-hang/ >> >> I don't know how to produce "alltrace in ddb" as the instructions in the >> wiki says. It runs the GENERIC kernel, so perhaps it isn't possible? >> >> I checked "camcontrol tags" for all the disks in the pool - all have >> zeroes for dev_active, devq_queued and held. >> >> Is there anything else I can check while the machine is up? I however >> need to restart it pretty soon. >> >> Bengt >> _______________________________________________ >> freebsd-fs@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-fs >> To unsubscribe, send any mail to "freebsd-fs-unsubscribe@freebsd.org"