在vmware workstation上装的openstack，在从卷启动镜像的时候失败了，/var/log/message里的日志。这个sdb是vm虚拟机上新加上的磁盘做cinder存储用的，所以现在不确定是否需要改什么东西。
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 20 00
May 18 04:04:23 controller kernel: end_request: I/O error, dev sdb, sector 0
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 0
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 1
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 2
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 3
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
May 18 04:04:23 controller kernel: end_request: I/O error, dev sdb, sector 0
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 0
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 03 bf ff f8 00 00 08 00
May 18 04:04:23 controller kernel: end_request: I/O error, dev sdb, sector 62914552
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 7864319
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 03 bf ff f8 00 00 08 00
May 18 04:04:23 controller kernel: end_request: I/O error, dev sdb, sector 62914552
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 7864319
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 20 00
May 18 04:04:23 controller kernel: end_request: I/O error, dev sdb, sector 0
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 0
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 1
May 18 04:04:23 controller kernel: Buffer I/O error on device sdb, logical block 2
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
May 18 04:04:23 controller kernel: sd 0:0:1:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 08 00
May 18 04:04:23 controller kernel: end_request: I/O error, dev sdb, sector 0
May 18 04:08:34 controller kernel: Rounding down aligned max_sectors from 4294967295 to 4294967288
May 18 04:08:34 controller abrt: detected unhandled Python exception in '/usr/bin/cinder-rtstool'
May 18 04:08:34 controller abrtd: New client connected
May 18 04:08:34 controller abrt-server[19488]: Saved Python crash dump of pid 19481 to /var/spool/abrt/pyhook-2015-05-18-04:08:34-19481
May 18 04:08:34 controller abrtd: Directory 'pyhook-2015-05-18-04:08:34-19481' creation detected
May 18 04:08:35 controller abrtd: Package 'openstack-cinder' isn't signed with proper key
May 18 04:08:35 controller abrtd: 'post-create' on '/var/spool/abrt/pyhook-2015-05-18-04:08:34-19481' exited with 1
May 18 04:08:35 controller abrtd: Deleting problem directory '/var/spool/abrt/pyhook-2015-05-18-04:08:34-19481'
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