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Bug 1279391

Summary: ceph.conf properties override qemu's command-line properties
Product: Red Hat Enterprise Linux 7 Reporter: Jan Kurik <jkurik>
Component: qemu-kvm-rhevAssignee: Stefan Hajnoczi <stefanha>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: high    
Version: 7.2CC: areis, huding, jdillama, jdurgin, jen, jkurik, juzhang, kdreyer, knoel, mazhang, mrezanin, rbalakri, stefanha, virt-bugs, virt-maint, xfu, xwei, yama
Target Milestone: rcKeywords: ZStream
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: qemu-kvm-rhev-2.3.0-31.el7_2.2 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: 1278447 Environment:
Last Closed: 2015-12-07 21:43:16 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1278447    
Bug Blocks:    

Description Jan Kurik 2015-11-09 11:10:14 UTC 
This bug has been copied from bug #1278447 and has been proposed
to be backported to 7.2 z-stream (EUS).
Comment 5 Xiaoqing Wei 2015-11-13 08:19:07 UTC 
[root@dhcp-11-50 qemu-kvm-rhev-2.3.0-30.el7]# qemu-img info rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236
image: rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236
file format: raw
virtual size: 10M (10485760 bytes)
disk size: unavailable
cluster_size: 4194304

[root@dhcp-11-50 ~]# cat /etc/ceph/ceph.conf 
[client]
rbd cache = true
admin socket = /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok
log file = /var/log/ceph/


-------------------------  vanilla brew build

[root@dhcp-11-50 qemu-kvm-rhev-2.3.0-30.el7]# /usr/libexec/qemu-kvm -M pc -S -monitor stdio -vnc none -smp 1 -m 1024 -net none -vga none -drive file=rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236,id='rbd',format=raw,cache=none
QEMU 2.3.0 monitor - type 'help' for more information
(qemu) info version 
2.3.0 (qemu-kvm-rhev-2.3.0-30.el7)
(qemu) info block
rbd: rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236 (raw)
    Cache mode:       writeback, direct



# ceph --admin-daemon /var/run/ceph/ceph-client.admin.31349.140277480660992.asok config show | grep rbd_cache
    "rbd_cache": "true",


====================== scratch brew build

[root@dhcp-11-50 qemu1279391]# /usr/libexec/qemu-kvm -M pc -S -monitor stdio -vnc none -smp 1 -m 1024 -net none -vga none -drive file=rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236,id='rbd',format=raw,cache=none
QEMU 2.3.0 monitor - type 'help' for more information
(qemu) info version 
2.3.0 (qemu-kvm-rhev-2.3.0-31.el7.next.candidate)
(qemu) info block
rbd: rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236 (raw)
    Cache mode:       writeback, direct

[root@dhcp-11-50 ~]# ceph --admin-daemon /var/run/ceph/ceph-client.admin.31468.140247995842560.asok config show | grep rbd_cache
    "rbd_cache": "false",




so with scratch build, qemu cli takes precedence
Comment 6 Miroslav Rezanina 2015-11-18 10:08:09 UTC 
Fix included in qemu-kvm-rhev-2.3.0-31.el7_2.2
Comment 7 Xiaoqing Wei 2015-11-19 05:22:47 UTC 
[root@dhcp-11-50 qemu-kvm-rhev-2.3.0-30.el7]# qemu-img info rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236
image: rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236
file format: raw
virtual size: 10M (10485760 bytes)
disk size: unavailable
cluster_size: 4194304

[root@dhcp-11-50 ~]# cat /etc/ceph/ceph.conf 
[client]
rbd cache = true
admin socket = /var/run/ceph/$cluster-$type.$id.$pid.$cctid.asok
log file = /var/log/ceph/


-------------------------  un-fixed version qemu-kvm-rhev-2.3.0-30.el7

[root@dhcp-11-50 qemu-kvm-rhev-2.3.0-30.el7]# /usr/libexec/qemu-kvm -M pc -S -monitor stdio -vnc none -smp 1 -m 1024 -net none -vga none -drive file=rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236,id='rbd',format=raw,cache=none
QEMU 2.3.0 monitor - type 'help' for more information
(qemu) info version 
2.3.0 (qemu-kvm-rhev-2.3.0-30.el7)
(qemu) info block
rbd: rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236 (raw)
    Cache mode:       writeback, direct



# ceph --admin-daemon /var/run/ceph/ceph-client.admin.31349.140277480660992.asok config show | grep rbd_cache
    "rbd_cache": "true",





========================= fixed version qemu-kvm-rhev-2.3.0-31.el7_2.2

[root@dhcp-11-50 linux-stable]# /usr/libexec/qemu-kvm -M pc -S -monitor stdio -vnc none -smp 1 -m 1024 -net none -vga none -drive file=rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236,id='rbd',format=raw,cache=none
QEMU 2.3.0 monitor - type 'help' for more information
(qemu) info block
rbd: rbd:qemu-kvm-pool/test.raw:mon_host=10.66.9.236 (raw)
    Cache mode:       writeback, direct

ide1-cd0: [not inserted]
    Removable device: not locked, tray closed

floppy0: [not inserted]
    Removable device: not locked, tray closed

sd0: [not inserted]
    Removable device: not locked, tray closed
(qemu) 


[root@dhcp-11-50 qemu-kvm-rhev-2.3.0-31.el7_2.2]# ceph --admin-daemon /var/run/ceph/ceph-client.admin.13454.139944188624896.asok config show | grep rbd_cache\"
    "rbd_cache": "false",
Comment 11 errata-xmlrpc 2015-12-07 21:43:16 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2555.html