From: Dietmar Maurer <dietmar@proxmox.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>,
qemu-block@nongnu.org, Sergio Lopez <slp@redhat.com>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
Max Reitz <mreitz@redhat.com>,
Stefan Hajnoczi <stefanha@redhat.com>,
"jsnow@redhat.com" <jsnow@redhat.com>
Subject: Re: bdrv_drained_begin deadlock with io-threads
Date: Wed, 1 Apr 2020 17:37:45 +0200 (CEST) [thread overview]
Message-ID: <997901084.0.1585755465486@webmail.proxmox.com> (raw)
In-Reply-To: <20200401103748.GA4680@linux.fritz.box>
> > I really nobody else able to reproduce this (somebody already tried to reproduce)?
>
> I can get hangs, but that's for job_completed(), not for starting the
> job. Also, my hangs have a non-empty bs->tracked_requests, so it looks
> like a different case to me.
Please can you post the command line args of your VM? I use something like
./x86_64-softmmu/qemu-system-x86_64 -chardev 'socket,id=qmp,path=/var/run/qemu-server/101.qmp,server,nowait' -mon 'chardev=qmp,mode=control' -pidfile /var/run/qemu-server/101.pid -m 1024 -object 'iothread,id=iothread-virtioscsi0' -device 'virtio-scsi-pci,id=virtioscsi0,iothread=iothread-virtioscsi0' -drive 'file=/backup/disk3/debian-buster.raw,if=none,id=drive-scsi0,format=raw,cache=none,aio=native,detect-zeroes=on' -device 'scsi-hd,bus=virtioscsi0.0,channel=0,scsi-id=0,lun=0,drive=drive-scsi0,id=scsi0' -machine "type=pc,accel=kvm"
Do you also run "stress-ng -d 5" indied the VM?
next prev parent reply other threads:[~2020-04-01 16:16 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-31 8:46 bdrv_drained_begin deadlock with io-threads Dietmar Maurer
2020-03-31 9:17 ` Dietmar Maurer
2020-03-31 9:33 ` Dietmar Maurer
2020-03-31 12:58 ` Kevin Wolf
2020-03-31 14:32 ` Dietmar Maurer
2020-03-31 14:53 ` Vladimir Sementsov-Ogievskiy
2020-03-31 15:24 ` Dietmar Maurer
2020-03-31 15:37 ` Kevin Wolf
2020-03-31 16:18 ` Dietmar Maurer
2020-04-01 10:37 ` Kevin Wolf
2020-04-01 15:37 ` Dietmar Maurer [this message]
2020-04-01 15:50 ` Dietmar Maurer
2020-04-01 18:12 ` Kevin Wolf
2020-04-01 18:28 ` Dietmar Maurer
2020-04-01 18:44 ` Kevin Wolf
2020-04-02 6:48 ` Dietmar Maurer
2020-04-02 9:10 ` Dietmar Maurer
2020-04-02 12:14 ` Kevin Wolf
2020-04-02 14:25 ` Kevin Wolf
2020-04-02 15:40 ` Dietmar Maurer
2020-04-02 16:47 ` Kevin Wolf
2020-04-02 17:10 ` Kevin Wolf
2020-04-03 6:48 ` Thomas Lamprecht
2020-04-03 8:26 ` Dietmar Maurer
2020-04-03 8:47 ` Kevin Wolf
2020-04-03 16:31 ` Dietmar Maurer
2020-04-06 8:31 ` Kevin Wolf
2020-04-02 15:44 ` Dietmar Maurer
2020-04-01 18:35 ` Kevin Wolf
2020-04-02 9:21 ` Dietmar Maurer
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