Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Sense Key : Not Ready [current]
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Add. Sense: Logical unit not ready, manual intervention required
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb] CDB:
Sep  7 19:55:19 iscsi2 kernel: Write(16): 8a 00 00 00 00 00 28 e2 7d 50 00 00 00 08 00 00
Sep  7 19:55:19 iscsi2 kernel: end_request: I/O error, dev sdb, sector 685931856
Sep  7 19:55:19 iscsi2 kernel: block drbd1: write: error=-5 s=685931856s
Sep  7 19:55:19 iscsi2 kernel: block drbd1: disk( UpToDate -> Failed ) 
Sep  7 19:55:19 iscsi2 kernel: block drbd1: Local IO failed in drbd_endio_write_sec_final. Detaching...
Sep  7 19:55:19 iscsi2 kernel: block drbd1: pdsk( UpToDate -> Failed ) 
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Sense Key : Not Ready [current]
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Add. Sense: Logical unit not ready, manual intervention required
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb] CDB:
Sep  7 19:55:19 iscsi2 kernel: Write(16): 8a 00 00 00 00 00 28 e2 7d 58 00 00 00 08 00 00
Sep  7 19:55:19 iscsi2 kernel: end_request: I/O error, dev sdb, sector 685931864
Sep  7 19:55:19 iscsi2 kernel: block drbd1: write: error=-5 s=685931864s
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Sense Key : Not Ready [current]
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Add. Sense: Logical unit not ready, manual intervention required
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb] CDB:
Sep  7 19:55:19 iscsi2 kernel: Write(16): 8a 00 00 00 00 00 19 00 39 e0 00 00 00 08 00 00
Sep  7 19:55:19 iscsi2 kernel: end_request: I/O error, dev sdb, sector 419445216
Sep  7 19:55:19 iscsi2 kernel: block drbd1: write: error=-5 s=419445216s
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Sense Key : Not Ready [current]
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Add. Sense: Logical unit not ready, manual intervention required
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb] CDB:
Sep  7 19:55:19 iscsi2 kernel: Write(16): 8a 00 00 00 00 00 19 00 39 e8 00 00 00 08 00 00
Sep  7 19:55:19 iscsi2 kernel: end_request: I/O error, dev sdb, sector 419445224
Sep  7 19:55:19 iscsi2 kernel: block drbd1: write: error=-5 s=419445224s
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Sense Key : Not Ready [current]
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Add. Sense: Logical unit not ready, manual intervention required
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb] CDB:
Sep  7 19:55:19 iscsi2 kernel: Write(16): 8a 00 00 00 00 00 19 00 39 f0 00 00 00 08 00 00
Sep  7 19:55:19 iscsi2 kernel: end_request: I/O error, dev sdb, sector 419445232
Sep  7 19:55:19 iscsi2 kernel: block drbd1: write: error=-5 s=419445232s
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Sense Key : Not Ready [current]
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb]
Sep  7 19:55:19 iscsi2 kernel: Add. Sense: Logical unit not ready, manual intervention required
Sep  7 19:55:19 iscsi2 kernel: sd 0:2:2:0: [sdb] CDB:
Sep  7 19:55:19 iscsi2 kernel: Write(16): 8a 00 00 00 00 00 19 00 39 f8 00 00 00 08 00 00
Sep  7 19:55:19 iscsi2 kernel: end_request: I/O error, dev sdb, sector 419445240
Sep  7 19:55:19 iscsi2 kernel: block drbd1: bitmap WRITE of 0 pages took 2 jiffies
Sep  7 19:55:19 iscsi2 kernel: block drbd1: 0 KB (0 bits) marked out-of-sync by on disk bit-map.
Sep  7 19:55:19 iscsi2 kernel: block drbd1: disk( Failed -> Diskless ) 
Sep  7 19:55:19 iscsi2 kernel: block drbd1: pdsk( Failed -> Diskless )