From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56013) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZvmjQ-0005y8-6u for qemu-devel@nongnu.org; Mon, 09 Nov 2015 08:43:37 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZvmjM-0006dQ-07 for qemu-devel@nongnu.org; Mon, 09 Nov 2015 08:43:36 -0500 Received: from mail-ph.de-nserver.de ([85.158.179.214]:25871) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZvmjL-0006dH-MU for qemu-devel@nongnu.org; Mon, 09 Nov 2015 08:43:31 -0500 References: <310812067.2785504.1447038645014.JavaMail.zimbra@oxygem.tv> <5640490B.5030700@parallels.com> <564049BA.1090805@parallels.com> <253899541.6094258.1447066125770.JavaMail.zimbra@oxygem.tv> <1119051619.7201094.1447076562035.JavaMail.zimbra@redhat.com> From: Stefan Priebe - Profihost AG Message-ID: <5640A2FE.6070402@profihost.ag> Date: Mon, 9 Nov 2015 14:43:26 +0100 MIME-Version: 1.0 In-Reply-To: <1119051619.7201094.1447076562035.JavaMail.zimbra@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit Subject: Re: [Qemu-devel] qemu : rbd block driver internal snapshot and vm_stop is hanging forever List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Jason Dillaman , Alexandre DERUMIER Cc: ceph-devel , qemu-devel , jdurgin@redhat.com > ----- Original Message ----- >> From: "Alexandre DERUMIER" >> To: "ceph-devel" >> Cc: "qemu-devel" , jdurgin@redhat.com >> Sent: Monday, November 9, 2015 5:48:45 AM >> Subject: Re: [Qemu-devel] qemu : rbd block driver internal snapshot and vm_stop is hanging forever >> >> adding to ceph.conf >> >> [client] >> rbd_non_blocking_aio = false >> >> >> fix the problem for me (with rbd_cache=false) >> >> >> (@cc jdurgin@redhat.com) +1 same to me. Stefan >> >> >> >> ----- Mail original ----- >> De: "Denis V. Lunev" >> À: "aderumier" , "ceph-devel" >> , "qemu-devel" >> Envoyé: Lundi 9 Novembre 2015 08:22:34 >> Objet: Re: [Qemu-devel] qemu : rbd block driver internal snapshot and vm_stop >> is hanging forever >> >> On 11/09/2015 10:19 AM, Denis V. Lunev wrote: >>> On 11/09/2015 06:10 AM, Alexandre DERUMIER wrote: >>>> Hi, >>>> >>>> with qemu (2.4.1), if I do an internal snapshot of an rbd device, >>>> then I pause the vm with vm_stop, >>>> >>>> the qemu process is hanging forever >>>> >>>> >>>> monitor commands to reproduce: >>>> >>>> >>>> # snapshot_blkdev_internal drive-virtio0 yoursnapname >>>> # stop >>>> >>>> >>>> >>>> >>>> I don't see this with qcow2 or sheepdog block driver for example. >>>> >>>> >>>> Regards, >>>> >>>> Alexandre >>>> >>> this could look like the problem I have recenty trying to >>> fix with dataplane enabled. Patch series is named as >>> >>> [PATCH for 2.5 v6 0/10] dataplane snapshot fixes >>> >>> Den >> >> anyway, even if above will not help, can you collect gdb >> traces from all threads in QEMU process. May be I'll be >> able to give a hit. >> >> Den >> -- >> To unsubscribe from this list: send the line "unsubscribe ceph-devel" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html >> > -- > To unsubscribe from this list: send the line "unsubscribe ceph-devel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html >