2:11 p.m.
On 04/03/2015 12:31 PM, shimano wrote:
Hi guys,
I think I found the source of problem. The oVirt's documentation says:
Any POSIX compliant filesystem used as a storage domain in oVirt *MUST*
support sparse files and direct I/O.
MooseFS is based on FUSE drivers so it doesn't support direct_io.
My question now is - Can I disable require of direct_io in oVirt? If not
in any option, maybe by little changes in source code?
Why would I do that and why I'm not afraid about I/O performance?
Because I use MooseFS via NFS now and it works perfect, so that's why I
think that Direct I/O is not necessary!
the direct_io requirement is about robustness, not performance. it is
meant to prevent data corruption in various cases
2015-04-02 9:47 GMT+02:00 shimano <shimano(a)go2.pl <mailto:shimano@go2.pl>>:
Hi everyone...
I have a little strange situation... I'm trying to add Posix
Compliant FS Storage Domain based on MooseFS. As You can read below,
oVirt is mounting it correctly but it cannot make a Storage Domain.
Anybody could help?
// Quick investigation
Is /posix mounted?
root@host008:/tmp mount |grep fuse
root@host008:/tmp
Nope.
Add Storage Domain via Web Panel with parameters:
Name: MooseFS
Domain Function / Storage Type: Data / POSIX Compliant FS
Use Host: HOST008
Path: mfsmount
VFS Type: fuse
Mount Options:
mfsmaster=mfsmaster,mfsport=9421,mfssubfolder=/posix,_netdev
Debug logs from task:
JsonRpc (StompReactor)::DEBUG::2015-04-02
08:52:58,231::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message <StompFrame command='SEND'>
JsonRpcServer::DEBUG::2015-04-02
08:52:58,232::__init__::506::jsonrpc.JsonRpcServer::(serve_requests)
Waiting for request
Thread-549209::DEBUG::2015-04-02
08:52:58,232::__init__::469::jsonrpc.JsonRpcServer::(_serveRequest)
Calling 'StoragePool.connectStorageServer' in bridge with
{'connectionParams': [{'password': '', 'id':
'00000000-0000-0000-0000-000000000000', 'connection':
'mfsmount',
'mnt_options':
'mfsmaster=mfsmaster,mfsport=9421,mfssubfolder=/posix,_netdev',
'user': '', 'tpgt': '1', 'vfs_type':
'fuse', 'iqn': '', 'port':
''}], 'storagepoolID':
'00000000-0000-0000-0000-000000000000',
'domainType': 6}
Thread-549209::DEBUG::2015-04-02
08:52:58,234::task::595::Storage.TaskManager.Task::(_updateState)
Task=`9bb09583-d8f7-4189-b9ab-81b925f8fc13`::moving from state init
-> state preparing
Thread-549209::INFO::2015-04-02
08:52:58,234::logUtils::44::dispatcher::(wrapper) Run and protect:
connectStorageServer(domType=6,
spUUID='00000000-0000-0000-0000-000000000000', conList=[{'iqn':
'',
'port': '', 'connection': 'mfsmount',
'mnt_options':
'mfsmaster=mfsmaster,mfsport=9421,mfssubfolder=/posix,_netdev',
'user': '', 'tpgt': '1', 'vfs_type':
'fuse', 'password': '******',
'id': '00000000-0000-0000-0000-000000000000'}], options=None)
Thread-549209::DEBUG::2015-04-02
08:52:58,237::fileUtils::142::Storage.fileUtils::(createdir)
Creating directory: /rhev/data-center/mnt/mfsmount
Thread-549209::WARNING::2015-04-02
08:52:58,237::fileUtils::149::Storage.fileUtils::(createdir) Dir
/rhev/data-center/mnt/mfsmount already exists
Thread-549209::DEBUG::2015-04-02
08:52:58,238::mount::227::Storage.Misc.excCmd::(_runcmd)
/usr/bin/sudo -n /bin/mount -t fuse -o
mfsmaster=mfsmaster,mfsport=9421,mfssubfolder=/posix,_netdev
mfsmount /rhev/data-center/mnt/mfsmount (cwd None)
JsonRpc (StompReactor)::DEBUG::2015-04-02
08:52:58,271::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message <StompFrame command='SEND'>
JsonRpcServer::DEBUG::2015-04-02
08:52:58,273::__init__::506::jsonrpc.JsonRpcServer::(serve_requests)
Waiting for request
Thread-549210::DEBUG::2015-04-02
08:52:58,276::stompReactor::163::yajsonrpc.StompServer::(send)
Sending response
JsonRpc (StompReactor)::DEBUG::2015-04-02
08:52:58,279::stompReactor::98::Broker.StompAdapter::(handle_frame)
Handling message <StompFrame command='SEND'>
JsonRpcServer::DEBUG::2015-04-02
08:52:58,280::__init__::506::jsonrpc.JsonRpcServer::(serve_requests)
Waiting for request
Thread-549211::DEBUG::2015-04-02
08:52:58,282::stompReactor::163::yajsonrpc.StompServer::(send)
Sending response
Thread-549209::ERROR::2015-04-02
08:52:58,523::hsm::2424::Storage.HSM::(connectStorageServer) Could
not connect to storageServer
Traceback (most recent call last):
File "/usr/share/vdsm/storage/hsm.py", line 2421, in
connectStorageServer
conObj.connect()
File "/usr/share/vdsm/storage/storageServer.py", line 222, in
connect
self.getMountObj().getRecord().fs_file)
File "/usr/share/vdsm/storage/mount.py", line 278, in getRecord
(self.fs_spec, self.fs_file))
OSError: [Errno 2] Mount of `mfsmount` at
`/rhev/data-center/mnt/mfsmount` does not exist
Thread-549209::DEBUG::2015-04-02
08:52:58,524::hsm::2443::Storage.HSM::(connectStorageServer)
knownSDs: {2df46204-217e-416f-a072-ab8ef17cd8d2:
storage.nfsSD.findDomain, 316c3e1c-4e61-4b0a-b2f6-63cc22d3ab25:
storage.nfsSD.findDomain, 6c348f77-bb02-4135-b629-2c9cacb0b85c:
storage.nfsSD.findDomain, 00697722-a1ce-4911-a84c-c4688e5076fe:
storage.nfsSD.findDomain, 6ac038d7-969d-45b5-be5f-c58a66a78a90:
storage.nfsSD.findDomain}
Thread-549209::INFO::2015-04-02
08:52:58,524::logUtils::47::dispatcher::(wrapper) Run and protect:
connectStorageServer, Return response: {'statuslist': [{'status':
100, 'id': '00000000-0000-0000-0000-000000000000'}]}
Thread-549209::DEBUG::2015-04-02
08:52:58,525::task::1191::Storage.TaskManager.Task::(prepare)
Task=`9bb09583-d8f7-4189-b9ab-81b925f8fc13`::finished:
{'statuslist': [{'status': 100, 'id':
'00000000-0000-0000-0000-000000000000'}]}
Thread-549209::DEBUG::2015-04-02
08:52:58,525::task::595::Storage.TaskManager.Task::(_updateState)
Task=`9bb09583-d8f7-4189-b9ab-81b925f8fc13`::moving from state
preparing -> state finished
Thread-549209::DEBUG::2015-04-02
08:52:58,526::resourceManager::940::Storage.ResourceManager.Owner::(releaseAll)
Owner.releaseAll requests {} resources {}
Thread-549209::DEBUG::2015-04-02
08:52:58,526::resourceManager::977::Storage.ResourceManager.Owner::(cancelAll)
Owner.cancelAll requests {}
Thread-549209::DEBUG::2015-04-02
08:52:58,526::task::993::Storage.TaskManager.Task::(_decref)
Task=`9bb09583-d8f7-4189-b9ab-81b925f8fc13`::ref 0 aborting False
Thread-549209::DEBUG::2015-04-02
08:52:58,527::__init__::500::jsonrpc.JsonRpcServer::(_serveRequest)
Return 'StoragePool.connectStorageServer' in bridge with [{'status':
100, 'id': '00000000-0000-0000-0000-000000000000'}]
Thread-549209::DEBUG::2015-04-02
08:52:58,527::stompReactor::163::yajsonrpc.StompServer::(send)
Sending response
Thread-29::DEBUG::2015-04-02
08:52:59,236::domainMonitor::209::Storage.DomainMonitorThread::(_monitorDomain)
Refreshing domain 316c3e1c-4e61-4b0a-b2f6-63cc22d3ab25
Really? Incorrect mount options? Trying mount from hand... But
first, check for mounts:
root@host008:/tmp mount |grep fuse
mfsmaster:9421 on /rhev/data-center/mnt/mfsmount type fuse.mfs
(rw,allow_other)
Oh! It is already mounted! So oVirt mounted it correctly, but cannot
use mountpoint? Hm, permissions?
root@host008:/tmp ls -al /rhev/data-center/mnt/mfsmount/
total 4
drwxr-xr-x 2 vdsm kvm 0 Apr 1 14:57 .
drwxr-xr-x 8 vdsm kvm 4096 Apr 2 08:43 ..
Looks fine... Ok, try to unmount and mount manually.
root@host008:/tmp umount /rhev/data-center/mnt/mfsmount/
root@host008:/tmp mount |grep fuse
root@host008:/tmp mount -t fuse -o
mfsmaster=mfsmaster,mfsport=9421,mfssubfolder=/posix,_netdev
mfsmount /rhev/data-center/mnt/mfsmount
mfsmaster accepted connection with parameters:
read-write,restricted_ip ; root mapped to root:root
root@host008:/tmp mount |grep fuse
mfsmaster:9421 on /rhev/data-center/mnt/mfsmount type fuse.mfs
(rw,allow_other)
root@host008:/tmp ls -al /rhev/data-center/mnt/mfsmount/
total 4
drwxr-xr-x 2 vdsm kvm 0 Apr 1 14:57 .
drwxr-xr-x 8 vdsm kvm 4096 Apr 2 08:43 ..
Ok, but I'm root. Try to do it as vdsm user.
root@host008:/tmp cat /etc/passwd /etc/group |grep :36:
vdsm:x:36:36:Node Virtualization Manager:/var/lib/vdsm:/bin/bash
kvm:x:36:qemu,sanlock
root@host008:/tmp umount /rhev/data-center/mnt/mfsmount/
root@host008:/tmp su vdsm
vdsm@host008:/tmp /usr/bin/sudo -n /bin/mount -t fuse -o
mfsmaster=mfsmaster,mfsport=9421,mfssubfolder=/posix,_netdev
mfsmount /rhev/data-center/mnt/mfsmount
mfsmaster accepted connection with parameters:
read-write,restricted_ip ; root mapped to root:root
vdsm@host008:/tmp ls -al /rhev/data-center/mnt/mfsmount/
total 4
drwxr-xr-x 2 vdsm kvm 0 Apr 1 14:57 .
drwxr-xr-x 8 vdsm kvm 4096 Apr 2 08:43 ..
vdsm@host008:/tmp mkdir
/rhev/data-center/mnt/mfsmount/ovirt-storage-test
vdsm@host008:/tmp ls -al /rhev/data-center/mnt/mfsmount/
total 4
drwxr-xr-x 3 vdsm kvm 0 Apr 2 2015 .
drwxr-xr-x 8 vdsm kvm 4096 Apr 2 08:43 ..
drwxr-xr-x 2 vdsm kvm 0 Apr 2 2015 ovirt-storage-test
// End of quick investigation
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