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[Qemu-devel] [Bug 1027525] Re: Unable to insert cd media located on ro n
From: |
Launchpad Bug Tracker |
Subject: |
[Qemu-devel] [Bug 1027525] Re: Unable to insert cd media located on ro nfs mount |
Date: |
Mon, 30 Jan 2017 04:17:35 -0000 |
[Expired for QEMU because there has been no activity for 60 days.]
** Changed in: qemu
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1027525
Title:
Unable to insert cd media located on ro nfs mount
Status in QEMU:
Expired
Bug description:
When issuing a "change" command via the monitor, qemu is unable to
open the iso file if it is mounted on a read-only nfs share. If I
mount read-write (and make sure the file is writable by the qemu
process), then the change command succeeds. Note that this doesn't
affect media specified on the command line when starting qemu, only
when changing via the monitor.
To reproduce, mount cd images directory read only, e.g.
address@hidden ~]# grep iso /etc/fstab
10.48.50.20:/iso /srv/kvm/iso nfs4 defaults,ro 0 0
Start qemu with minimal options, just need access to the monitor:
address@hidden ~]# kvm -vnc 127.0.0.1:0 -S
Connect to the monitor and issue a change command:
(qemu) change ide1-cd0 /srv/kvm/iso/ubuntu-12.04-server-amd64.iso
Could not open '/srv/kvm/iso/ubuntu-12.04-server-amd64.iso
Re-mount the iso directory read-write and notice that the command
succeeds:
address@hidden ~]# mount -o remount,rw /srv/kvm/iso
(qemu) change ide1-cd0 /srv/kvm/iso/ubuntu-12.04-server-amd64.iso
(qemu)
address@hidden ~]# kvm --version
QEMU emulator version 1.1.1 (qemu-kvm-1.1.1), Copyright (c) 2003-2008 Fabrice
Bellard
address@hidden ~]# uname -a
Linux kvmhost0 3.4.5-1-ARCH #1 SMP PREEMPT Mon Jul 16 21:35:54 CEST 2012
x86_64 GNU/Linux
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