[Gluster-users] qemu-kvm 0.12.1.2 and gluster 3.7.9- Permission denied

[Dmitry Melekhov]

30.03.2016 09:19, Dmitry Melekhov пишет:
> Hello!
>
> I'm playing with with gluster , so I'm newbie , :-) and trying to use 
> it for kvm.
>
> I have two hosts, one is Centos 7 - vmhost1 , another RHEL 6.7 - roxar.
>
> I also have two Centos7 lxc containers on vmhost1 each has gluster 
> 3.7.9 installed.
>
> I created VM and it works OK on Centos 7, but on RHEL6 I get i/o error 
> very quickly:
>
> [2016-03-30 04:51:32.321811] I [MSGID: 115029] 
> [server-handshake.c:612:server_setvolume] 0-rep-volume-server: 
> accepted client from 
> roxar.p98.belkam.com-24191-2016/03/30-04:51:32:294822-rep-volume-client-0-0-0 
> (ve
> rsion: 3.5.2)
> [2016-03-30 04:51:32.342647] I [dict.c:473:dict_get] 
> (-->/lib64/libglusterfs.so.0(default_getxattr_cbk+0xac) 
> [0x7f22d5709c2c] 
> -->/usr/lib64/glusterfs/3.7.9/xlator/features/marker.so(marker_getxattr_cbk+0xa7) 
> [0x7
> f22cc407857] -->/lib64/libglusterfs.so.0(dict_get+0xac) 
> [0x7f22d56fa06c] ) 0-dict: !this || key=() [Invalid argument]
> [2016-03-30 04:51:47.226529] E [MSGID: 115070] 
> [server-rpc-fops.c:1558:server_open_cbk] 0-rep-volume-server: 1836: 
> OPEN /vm.img (ebd2ed77-8caa-467c-8e8a-0b0ad575a7f5) ==> (Permission 
> denied) [Permission denied]
>
> Image owner was root, I mounted glusterfs and changed owner to qemu, 
> now everything is OK,
> but it is very interesting is there better/right way to fix this?
> And why there is difference between RH versions?
>
> Thank you!
>
ooh, now I can't start VM on Centos7 host:

libvirtError: Cannot access storage file '/vm.img' (as uid:107, gid:107):

And can't change owner from Centos 7 host using fuse:

chown qemu:qemu vm.img
chown: changing ownership of 'vm.img': Input/output error

Although I can do this from RHEL 6 host:
[root at roxar replica]# chown qemu:qemu vm.img

[root at roxar replica]#

why?

Is it possible to access glusterfs volume by different client versions?