Description of problem:
As subject


Version-Release number of selected component (if applicable):
vdsm : 4.20.31-1.el7ev
ovirt-engine : 4.2.4.5-0.1.el7_3
libvirt : 3.9.0-14.el7_5.6
sanlock : 3.6.0-1.el7


How reproducible:
100%


Steps to Reproduce:
1. Install the hypervisor and RHVM with the image rhvh-4.2.4.3-0.20180622 (I think the version does not matter)

2. Add storage domain configured with luster file system with Posix-compatible FS
(Uid, gid must be mapped to the storage server)

Domain Function: Data
Storage Type: POSIX compliant FS
Host to Use: [SPM_HOSTNAME]
Name: [STORAGE_DOMAIN_NAME]
Path: [STORAGE_MANAGEMENT_IP]@tcp:[FSNAME(like volume name)]
VFS Type: luster
Mount Options:

3. rhvm WEB pops up the message.

Error while executing action AddPosixFsStorageDomain: Error creating a storage domain

engine.log : 
2018-10-26 10:50:36,956+09 INFO  [org.ovirt.engine.core.bll.storage.connection.AddStorageServerConnectionCommand] (default task-61) [5f2e2f52-eab8-4c16-a5cd-727d492f855f] Lock Acquired to object 'EngineLock:{exclusiveLocks='[10.10.10.15@tcp:/lustre/vmstore=STORAGE_CONNECTION]', sharedLocks=''}'
2018-10-26 10:50:36,963+09 INFO  [org.ovirt.engine.core.bll.storage.connection.AddStorageServerConnectionCommand] (default task-61) [5f2e2f52-eab8-4c16-a5cd-727d492f855f] Running command: AddStorageServerConnectionCommand internal: false. Entities affected :  ID: aaa00000-0000-0000-0000-123456789aaa Type: SystemAction group CREATE_STORAGE_DOMAIN with role type ADMIN
2018-10-26 10:50:36,965+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (default task-61) [5f2e2f52-eab8-4c16-a5cd-727d492f855f] START, ConnectStorageServerVDSCommand(HostName = host3.intel.dom, StorageServerConnectionManagementVDSParameters:{hostId='ba7e5336-2884-498e-8845-44bc17f5ab3b', storagePoolId='00000000-0000-0000-0000-000000000000', storageType='POSIXFS', connectionList='[StorageServerConnections:{id='null', connection='10.10.10.15@tcp:/lustre/vmstore', iqn='null', vfsType='lustre', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}]', sendNetworkEventOnFailure='true'}), log id: 24d0899f
2018-10-26 10:50:37,056+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (default task-61) [5f2e2f52-eab8-4c16-a5cd-727d492f855f] FINISH, ConnectStorageServerVDSCommand, return: {00000000-0000-0000-0000-000000000000=0}, log id: 24d0899f
2018-10-26 10:50:37,063+09 INFO  [org.ovirt.engine.core.bll.storage.connection.AddStorageServerConnectionCommand] (default task-61) [5f2e2f52-eab8-4c16-a5cd-727d492f855f] Lock freed to object 'EngineLock:{exclusiveLocks='[10.10.10.15@tcp:/lustre/vmstore=STORAGE_CONNECTION]', sharedLocks=''}'
2018-10-26 10:50:37,094+09 INFO  [org.ovirt.engine.core.bll.storage.domain.AddPosixFsStorageDomainCommand] (default task-20) [47702dc7-1973-45a4-8116-a4e7d8b80386] Running command: AddPosixFsStorageDomainCommand internal: false. Entities affected :  ID: aaa00000-0000-0000-0000-123456789aaa Type: SystemAction group CREATE_STORAGE_DOMAIN with role type ADMIN
2018-10-26 10:50:37,127+09 INFO  [org.ovirt.engine.core.bll.profiles.AddDiskProfileCommand] (default task-20) [18e068c6] Running command: AddDiskProfileCommand internal: true. Entities affected :  ID: 28ce0e8d-1073-4e82-99a4-0be72a508696 Type: StorageAction group CREATE_STORAGE_DISK_PROFILE with role type ADMIN
2018-10-26 10:50:37,137+09 INFO  [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-20) [18e068c6] EVENT_ID: USER_ADDED_DISK_PROFILE(10,120), Disk Profile vmstore was successfully added (User: admin@internal-authz).
2018-10-26 10:50:37,142+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (default task-20) [18e068c6] START, ConnectStorageServerVDSCommand(HostName = host3.intel.dom, StorageServerConnectionManagementVDSParameters:{hostId='ba7e5336-2884-498e-8845-44bc17f5ab3b', storagePoolId='00000000-0000-0000-0000-000000000000', storageType='POSIXFS', connectionList='[StorageServerConnections:{id='f8d72480-9c0e-43ce-9e3b-eeb253dbc5cf', connection='10.10.10.15@tcp:/lustre/vmstore', iqn='null', vfsType='lustre', mountOptions='null', nfsVersion='null', nfsRetrans='null', nfsTimeo='null', iface='null', netIfaceName='null'}]', sendNetworkEventOnFailure='true'}), log id: 788a5af3
2018-10-26 10:50:37,147+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.ConnectStorageServerVDSCommand] (default task-20) [18e068c6] FINISH, ConnectStorageServerVDSCommand, return: {f8d72480-9c0e-43ce-9e3b-eeb253dbc5cf=0}, log id: 788a5af3
2018-10-26 10:50:37,149+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand] (default task-20) [18e068c6] START, CreateStorageDomainVDSCommand(HostName = host3.intel.dom, CreateStorageDomainVDSCommandParameters:{hostId='ba7e5336-2884-498e-8845-44bc17f5ab3b', storageDomain='StorageDomainStatic:{name='vmstore', id='28ce0e8d-1073-4e82-99a4-0be72a508696'}', args='10.10.10.15@tcp:/lustre/vmstore'}), log id: 7da74c3
2018-10-26 10:50:37,535+09 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand] (default task-20) [18e068c6] Failed in 'CreateStorageDomainVDS' method
2018-10-26 10:50:37,540+09 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-20) [18e068c6] EVENT_ID: VDS_BROKER_COMMAND_FAILURE(10,802), VDSM host3.intel.dom command CreateStorageDomainVDS failed: Error creating a storage domain: (u'storageType=6, sdUUID=28ce0e8d-1073-4e82-99a4-0be72a508696, domainName=vmstore, domClass=1, typeSpecificArg=10.10.10.15@tcp:/lustre/vmstore domVersion=4',)
2018-10-26 10:50:37,541+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand] (default task-20) [18e068c6] Command 'org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand' return value 'StatusOnlyReturn [status=Status [code=351, message=Error creating a storage domain: (u'storageType=6, sdUUID=28ce0e8d-1073-4e82-99a4-0be72a508696, domainName=vmstore, domClass=1, typeSpecificArg=10.10.10.15@tcp:/lustre/vmstore domVersion=4',)]]'
2018-10-26 10:50:37,541+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand] (default task-20) [18e068c6] HostName = host3.intel.dom
2018-10-26 10:50:37,541+09 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand] (default task-20) [18e068c6] Command 'CreateStorageDomainVDSCommand(HostName = host3.intel.dom, CreateStorageDomainVDSCommandParameters:{hostId='ba7e5336-2884-498e-8845-44bc17f5ab3b', storageDomain='StorageDomainStatic:{name='vmstore', id='28ce0e8d-1073-4e82-99a4-0be72a508696'}', args='10.10.10.15@tcp:/lustre/vmstore'})' execution failed: VDSGenericException: VDSErrorException: Failed to CreateStorageDomainVDS, error = Error creating a storage domain: (u'storageType=6, sdUUID=28ce0e8d-1073-4e82-99a4-0be72a508696, domainName=vmstore, domClass=1, typeSpecificArg=10.10.10.15@tcp:/lustre/vmstore domVersion=4',), code = 351
2018-10-26 10:50:37,541+09 INFO  [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateStorageDomainVDSCommand] (default task-20) [18e068c6] FINISH, CreateStorageDomainVDSCommand, log id: 7da74c3
2018-10-26 10:50:37,541+09 ERROR [org.ovirt.engine.core.bll.storage.domain.AddPosixFsStorageDomainCommand] (default task-20) [18e068c6] Command 'org.ovirt.engine.core.bll.storage.domain.AddPosixFsStorageDomainCommand' failed: EngineException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to CreateStorageDomainVDS, error = Error creating a storage domain: (u'storageType=6, sdUUID=28ce0e8d-1073-4e82-99a4-0be72a508696, domainName=vmstore, domClass=1, typeSpecificArg=10.10.10.15@tcp:/lustre/vmstore domVersion=4',), code = 351 (Failed with error StorageDomainCreationError and code 351)
2018-10-26 10:50:37,542+09 INFO  [org.ovirt.engine.core.bll.CommandCompensator] (default task-20) [18e068c6] Command [id=4d44969a-e9ba-4860-82d3-7eb810fd35c0]: Compensating NEW_ENTITY_ID of org.ovirt.engine.core.common.businessentities.profiles.DiskProfile; snapshot: 210c96eb-2af9-4292-ac7e-98e89614adf4.
2018-10-26 10:50:37,542+09 INFO  [org.ovirt.engine.core.bll.CommandCompensator] (default task-20) [18e068c6] Command [id=4d44969a-e9ba-4860-82d3-7eb810fd35c0]: Compensating NEW_ENTITY_ID of org.ovirt.engine.core.common.businessentities.StorageDomainDynamic; snapshot: 28ce0e8d-1073-4e82-99a4-0be72a508696.
2018-10-26 10:50:37,542+09 INFO  [org.ovirt.engine.core.bll.CommandCompensator] (default task-20) [18e068c6] Command [id=4d44969a-e9ba-4860-82d3-7eb810fd35c0]: Compensating NEW_ENTITY_ID of org.ovirt.engine.core.common.businessentities.StorageDomainStatic; snapshot: 28ce0e8d-1073-4e82-99a4-0be72a508696.
2018-10-26 10:50:37,548+09 ERROR [org.ovirt.engine.core.bll.storage.domain.AddPosixFsStorageDomainCommand] (default task-20) [18e068c6] Transaction rolled-back for command 'org.ovirt.engine.core.bll.storage.domain.AddPosixFsStorageDomainCommand'.
2018-10-26 10:50:37,553+09 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-20) [18e068c6] EVENT_ID: USER_ADD_STORAGE_DOMAIN_FAILED(957), Failed to add Storage Domain vmstore. (User: admin@internal-authz)

vdsm.log : 
2018-10-26 10:50:36,967+0900 INFO  (jsonrpc/0) [vdsm.api] START connectStorageServer(domType=6, spUUID=u'00000000-0000-0000-0000-000000000000', conList=[{u'id': u'00000000-0000-0000-0000-000000000000', u'connection': u'10.10.10.15@tcp:/lustre/vmstore', u'iqn': u'', u'user': u'', u'tpgt': u'1', u'vfs_type': u'lustre', u'password': '********', u'port': u''}], options=None) from=::ffff:192.168.161.104,48628, flow_id=5f2e2f52-eab8-4c16-a5cd-727d492f855f, task_id=950eedf2-c5d2-4f70-a529-d1471e2f0db5 (api:46)
2018-10-26 10:50:36,969+0900 INFO  (jsonrpc/0) [storage.StorageServer.MountConnection] Creating directory u'/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore' (storageServer:167)
2018-10-26 10:50:36,969+0900 INFO  (jsonrpc/0) [storage.fileUtils] Creating directory: /rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore mode: None (fileUtils:197)
2018-10-26 10:50:36,969+0900 INFO  (jsonrpc/0) [storage.Mount] mounting 10.10.10.15@tcp:/lustre/vmstore at /rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore (mount:204)
2018-10-26 10:50:37,025+0900 INFO  (jsonrpc/0) [IOProcessClient] Starting client Global (__init__:308)
2018-10-26 10:50:37,036+0900 INFO  (ioprocess/240628) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,054+0900 INFO  (jsonrpc/0) [vdsm.api] FINISH connectStorageServer return={'statuslist': [{'status': 0, 'id': u'00000000-0000-0000-0000-000000000000'}]} from=::ffff:192.168.161.104,48628, flow_id=5f2e2f52-eab8-4c16-a5cd-727d492f855f, task_id=950eedf2-c5d2-4f70-a529-d1471e2f0db5 (api:52)
2018-10-26 10:50:37,054+0900 INFO  (jsonrpc/0) [jsonrpc.JsonRpcServer] RPC call StoragePool.connectStorageServer succeeded in 0.09 seconds (__init__:573)
2018-10-26 10:50:37,094+0900 INFO  (jsonrpc/4) [api.host] START getAllVmStats() from=::ffff:192.168.161.104,48628 (api:46)
2018-10-26 10:50:37,096+0900 INFO  (jsonrpc/4) [api.host] FINISH getAllVmStats return={'status': {'message': 'Done', 'code': 0}, 'statsList': (suppressed)} from=::ffff:192.168.161.104,48628 (api:52)
2018-10-26 10:50:37,097+0900 INFO  (jsonrpc/4) [jsonrpc.JsonRpcServer] RPC call Host.getAllVmStats succeeded in 0.00 seconds (__init__:573)
2018-10-26 10:50:37,143+0900 INFO  (jsonrpc/7) [vdsm.api] START connectStorageServer(domType=6, spUUID=u'00000000-0000-0000-0000-000000000000', conList=[{u'id': u'f8d72480-9c0e-43ce-9e3b-eeb253dbc5cf', u'connection': u'10.10.10.15@tcp:/lustre/vmstore', u'iqn': u'', u'user': u'', u'tpgt': u'1', u'vfs_type': u'lustre', u'password': '********', u'port': u''}], options=None) from=::ffff:192.168.161.104,48628, flow_id=18e068c6, task_id=60973360-9013-415c-8c24-947f9b21bc8d (api:46)
2018-10-26 10:50:37,145+0900 INFO  (jsonrpc/7) [vdsm.api] FINISH connectStorageServer return={'statuslist': [{'status': 0, 'id': u'f8d72480-9c0e-43ce-9e3b-eeb253dbc5cf'}]} from=::ffff:192.168.161.104,48628, flow_id=18e068c6, task_id=60973360-9013-415c-8c24-947f9b21bc8d (api:52)
2018-10-26 10:50:37,145+0900 INFO  (jsonrpc/7) [jsonrpc.JsonRpcServer] RPC call StoragePool.connectStorageServer succeeded in 0.00 seconds (__init__:573)
2018-10-26 10:50:37,149+0900 INFO  (jsonrpc/5) [vdsm.api] START createStorageDomain(storageType=6, sdUUID=u'28ce0e8d-1073-4e82-99a4-0be72a508696', domainName=u'vmstore', typeSpecificArg=u'10.10.10.15@tcp:/lustre/vmstore', domClass=1, domVersion=u'4', options=None) from=::ffff:192.168.161.104,48628, flow_id=18e068c6, task_id=21737927-1f37-4b1d-9ee9-9da08b68682f (api:46)
2018-10-26 10:50:37,359+0900 INFO  (itmap/0) [IOProcessClient] Starting client /glusterSD/host1.intel.dom:_engine (__init__:308)
2018-10-26 10:50:37,369+0900 INFO  (itmap/1) [IOProcessClient] Starting client /glusterSD/gluster1:vmdata (__init__:308)
2018-10-26 10:50:37,372+0900 INFO  (ioprocess/240646) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,380+0900 INFO  (itmap/2) [IOProcessClient] Starting client /glusterSD/host1.intel.dom:master (__init__:308)
2018-10-26 10:50:37,384+0900 INFO  (ioprocess/240653) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,392+0900 INFO  (ioprocess/240660) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,396+0900 INFO  (itmap/0) [IOProcessClient] Starting client /10.10.10.15:_lustre_vmstore (__init__:308)
2018-10-26 10:50:37,405+0900 INFO  (itmap/1) [IOProcessClient] Starting client /10.10.10.15@tcp:_lustre_vmstore (__init__:308)
2018-10-26 10:50:37,409+0900 INFO  (ioprocess/240670) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,417+0900 INFO  (itmap/2) [IOProcessClient] Starting client /host1.intel.dom:_iso (__init__:308)
2018-10-26 10:50:37,419+0900 INFO  (ioprocess/240679) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,428+0900 INFO  (ioprocess/240687) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,429+0900 INFO  (jsonrpc/5) [storage.StorageDomain] sdUUID=28ce0e8d-1073-4e82-99a4-0be72a508696 domainName=vmstore remotePath=10.10.10.15@tcp:/lustre/vmstore domClass=1 (nfsSD:70)
2018-10-26 10:50:37,447+0900 INFO  (jsonrpc/5) [IOProcessClient] Starting client 28ce0e8d-1073-4e82-99a4-0be72a508696 (__init__:308)
2018-10-26 10:50:37,458+0900 INFO  (ioprocess/240698) [IOProcess] Starting ioprocess (__init__:437)
2018-10-26 10:50:37,484+0900 INFO  (jsonrpc/5) [storage.StorageDomain] Creating domain metadata directory u'/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md' (fileSD:449)
2018-10-26 10:50:37,489+0900 INFO  (jsonrpc/1) [jsonrpc.JsonRpcServer] RPC call Host.ping2 succeeded in 0.00 seconds (__init__:573)
2018-10-26 10:50:37,492+0900 INFO  (jsonrpc/3) [vdsm.api] START repoStats(domains=[u'f5d75ae4-3f13-465d-99a5-2594e6d2e94c']) from=::1,54244, task_id=85721ebf-8318-4c08-82f0-cc3230076f13 (api:46)
2018-10-26 10:50:37,492+0900 INFO  (jsonrpc/3) [vdsm.api] FINISH repoStats return={u'f5d75ae4-3f13-465d-99a5-2594e6d2e94c': {'code': 0, 'actual': True, 'version': 4, 'acquired': True, 'delay': '0.000182245', 'lastCheck': '8.1', 'valid': True}} from=::1,54244, task_id=85721ebf-8318-4c08-82f0-cc3230076f13 (api:52)
2018-10-26 10:50:37,492+0900 INFO  (jsonrpc/3) [jsonrpc.JsonRpcServer] RPC call Host.getStorageRepoStats succeeded in 0.00 seconds (__init__:573)
2018-10-26 10:50:37,503+0900 INFO  (jsonrpc/5) [storage.xlease] Formatting index for lockspace u'28ce0e8d-1073-4e82-99a4-0be72a508696' (version=1) (xlease:653)
2018-10-26 10:50:37,531+0900 INFO  (jsonrpc/5) [vdsm.api] FINISH createStorageDomain error=Command ['/usr/bin/dd', 'iflag=fullblock', u'of=/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases', 'oflag=direct,seek_bytes', 'seek=1048576', 'bs=256512', 'count=1', 'conv=notrunc,nocreat,fsync'] failed with rc=1 out='[suppressed]' err="/usr/bin/dd: error writing '/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases': Invalid argument\n1+0 records in\n0+0 records out\n0 bytes (0 B) copied, 0.00103131 s, 0.0 kB/s\n" from=::ffff:192.168.161.104,48628, flow_id=18e068c6, task_id=21737927-1f37-4b1d-9ee9-9da08b68682f (api:50)
2018-10-26 10:50:37,532+0900 ERROR (jsonrpc/5) [storage.TaskManager.Task] (Task='21737927-1f37-4b1d-9ee9-9da08b68682f') Unexpected error (task:875)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, in _run
    return fn(*args, **kargs)
  File "<string>", line 2, in createStorageDomain
  File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in method
    ret = func(*args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 2591, in createStorageDomain
    storageType, domVersion)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/nfsSD.py", line 87, in create
    remotePath, storageType, version)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/fileSD.py", line 465, in _prepareMetadata
    cls.format_external_leases(sdUUID, xleases_path)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/sd.py", line 1200, in format_external_leases
    xlease.format_index(lockspace, backend)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/xlease.py", line 661, in format_index
    index.dump(file)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/xlease.py", line 761, in dump
    file.pwrite(INDEX_BASE, self._buf)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/xlease.py", line 994, in pwrite
    self._run(args, data=buf[:])
  File "/usr/lib/python2.7/site-packages/vdsm/storage/xlease.py", line 1011, in _run
    raise cmdutils.Error(args, rc, "[suppressed]", err)
Error: Command ['/usr/bin/dd', 'iflag=fullblock', u'of=/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases', 'oflag=direct,seek_bytes', 'seek=1048576', 'bs=256512', 'count=1', 'conv=notrunc,nocreat,fsync'] failed with rc=1 out='[suppressed]' err="/usr/bin/dd: error writing '/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases': Invalid argument\n1+0 records in\n0+0 records out\n0 bytes (0 B) copied, 0.00103131 s, 0.0 kB/s\n"
2018-10-26 10:50:37,532+0900 INFO  (jsonrpc/5) [storage.TaskManager.Task] (Task='21737927-1f37-4b1d-9ee9-9da08b68682f') aborting: Task is aborted: u'Command [\'/usr/bin/dd\', \'iflag=fullblock\', u\'of=/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases\', \'oflag=direct,seek_bytes\', \'seek=1048576\', \'bs=256512\', \'count=1\', \'conv=notrunc,nocreat,fsync\'] failed with rc=1 out=\'[suppressed]\' err="/usr/bin/dd: error writing \'/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases\': Invalid argument\\n1+0 records in\\n0+0 records out\\n0 bytes (0 B) copied, 0.00103131 s, 0.0 kB/s\\n"' - code 100 (task:1181)
2018-10-26 10:50:37,532+0900 ERROR (jsonrpc/5) [storage.Dispatcher] FINISH createStorageDomain error=Command ['/usr/bin/dd', 'iflag=fullblock', u'of=/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases', 'oflag=direct,seek_bytes', 'seek=1048576', 'bs=256512', 'count=1', 'conv=notrunc,nocreat,fsync'] failed with rc=1 out='[suppressed]' err="/usr/bin/dd: error writing '/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases': Invalid argument\n1+0 records in\n0+0 records out\n0 bytes (0 B) copied, 0.00103131 s, 0.0 kB/s\n" (dispatcher:86)
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/vdsm/storage/dispatcher.py", line 73, in wrapper
    result = ctask.prepare(func, *args, **kwargs)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 108, in wrapper
    return m(self, *a, **kw)
  File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 1189, in prepare
    raise self.error
Error: Command ['/usr/bin/dd', 'iflag=fullblock', u'of=/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases', 'oflag=direct,seek_bytes', 'seek=1048576', 'bs=256512', 'count=1', 'conv=notrunc,nocreat,fsync'] failed with rc=1 out='[suppressed]' err="/usr/bin/dd: error writing '/rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore/28ce0e8d-1073-4e82-99a4-0be72a508696/dom_md/xleases': Invalid argument\n1+0 records in\n0+0 records out\n0 bytes (0 B) copied, 0.00103131 s, 0.0 kB/s\n"
2018-10-26 10:50:37,532+0900 INFO  (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC call StorageDomain.create failed (error 351) in 0.39 seconds (__init__:573)
2018-10-26 10:50:37,606+0900 INFO  (jsonrpc/2) [vdsm.api] START disconnectStorageServer(domType=6, spUUID=u'00000000-0000-0000-0000-000000000000', conList=[{u'id': u'f8d72480-9c0e-43ce-9e3b-eeb253dbc5cf', u'connection': u'10.10.10.15@tcp:/lustre/vmstore', u'iqn': u'', u'user': u'', u'tpgt': u'1', u'vfs_type': u'lustre', u'password': '********', u'port': u''}], options=None) from=::ffff:192.168.161.104,48628, flow_id=82d6091f-a1c0-4304-9dec-30bc317d4182, task_id=a21c6614-aef7-46f2-84f9-6b96f6c97f4d (api:46)
2018-10-26 10:50:37,606+0900 INFO  (jsonrpc/2) [storage.Mount] unmounting /rhev/data-center/mnt/10.10.10.15@tcp:_lustre_vmstore (mount:212)


Actual results:
As above


Expected results:
Be able to add luster file system as posix compatible FS storage domain


Additional info:
1. luster is POSIX compatible FS.
2. If the direct option is present, bs must be a multiple of 4K (4096) (for 8K, 12K, 256K, 1M, 8M, etc.) for operation. For example, if you enter a value such as 512 or 4095, it will not work. The error message is as follows.

'error message: dd: error writing [filename]: invalid argument'