Hi,
I've got similar problem - after HW failure - two of three disks became 
unavailable and now I'm unable to btrfsck.
Btrfs lays on /dev/sdb1,/dev/sdc1,/dev/sdd1 - sdc+sdd became unavailable

Here is kernel log:
 ============================================
Mar  9 23:56:28 ftp2 kernel: [121492.593338] ata7.00: exception Emask 0x60 SAct 
0x1 SErr 0x800 action 0x6 frozen
Mar  9 23:56:28 ftp2 kernel: [121492.593343] ata7.00: irq_stat 0x20000000, host 
bus error
Mar  9 23:56:28 ftp2 kernel: [121492.593347] ata7: SError: { HostInt }
Mar  9 23:56:28 ftp2 kernel: [121492.593351] ata7.00: failed command: WRITE 
FPDMA QUEUED
Mar  9 23:56:28 ftp2 kernel: [121492.593359] ata7.00: cmd 
61/80:00:bf:72:7a/00:00:6a:00:00/40 tag 0 ncq 65536 out
Mar  9 23:56:28 ftp2 kernel: [121492.593361]          res 
40/00:04:bf:72:7a/00:00:6a:00:00/40 Emask 0x60 (host bus error)
Mar  9 23:56:28 ftp2 kernel: [121492.593364] ata7.00: status: { DRDY }
Mar  9 23:56:28 ftp2 kernel: [121492.593373] ata7: hard resetting link
Mar  9 23:56:28 ftp2 kernel: [121492.610037] ata8.00: exception Emask 0x60 SAct 
0x1b SErr 0x800 action 0x6 frozen
Mar  9 23:56:28 ftp2 kernel: [121492.610041] ata8.00: irq_stat 0x20000000, host 
bus error
Mar  9 23:56:28 ftp2 kernel: [121492.610045] ata8: SError: { HostInt }
Mar  9 23:56:28 ftp2 kernel: [121492.610049] ata8.00: failed command: WRITE 
FPDMA QUEUED
Mar  9 23:56:28 ftp2 kernel: [121492.610057] ata8.00: cmd 
61/80:00:3f:da:79/00:00:6a:00:00/40 tag 0 ncq 65536 out
Mar  9 23:56:28 ftp2 kernel: [121492.610058]          res 
40/00:04:3f:da:79/00:00:6a:00:00/40 Emask 0x60 (host bus error)
Mar  9 23:56:28 ftp2 kernel: [121492.610062] ata8.00: status: { DRDY }
Mar  9 23:56:28 ftp2 kernel: [121492.610065] ata8.00: failed command: WRITE 
FPDMA QUEUED
Mar  9 23:56:28 ftp2 kernel: [121492.610072] ata8.00: cmd 
61/80:08:bf:da:79/00:00:6a:00:00/40 tag 1 ncq 65536 out
Mar  9 23:56:28 ftp2 kernel: [121492.610074]          res 
40/00:04:3f:da:79/00:00:6a:00:00/40 Emask 0x60 (host bus error)
Mar  9 23:56:28 ftp2 kernel: [121492.610078] ata8.00: status: { DRDY }
Mar  9 23:56:28 ftp2 kernel: [121492.610081] ata8.00: failed command: WRITE 
FPDMA QUEUED
Mar  9 23:56:28 ftp2 kernel: [121492.610088] ata8.00: cmd 
61/80:18:3f:d9:79/00:00:6a:00:00/40 tag 3 ncq 65536 out
Mar  9 23:56:28 ftp2 kernel: [121492.610090]          res 
40/00:04:3f:da:79/00:00:6a:00:00/40 Emask 0x60 (host bus error)
Mar  9 23:56:28 ftp2 kernel: [121492.610093] ata8.00: status: { DRDY }
Mar  9 23:56:28 ftp2 kernel: [121492.610096] ata8.00: failed command: WRITE 
FPDMA QUEUED
Mar  9 23:56:28 ftp2 kernel: [121492.610103] ata8.00: cmd 
61/80:20:bf:d9:79/00:00:6a:00:00/40 tag 4 ncq 65536 out
Mar  9 23:56:28 ftp2 kernel: [121492.610105]          res 
40/00:04:3f:da:79/00:00:6a:00:00/40 Emask 0x60 (host bus error)
Mar  9 23:56:28 ftp2 kernel: [121492.610108] ata8.00: status: { DRDY }
Mar  9 23:56:28 ftp2 kernel: [121492.610116] ata8: hard resetting link
Mar  9 23:56:30 ftp2 kernel: [121494.160055] ata7: failed to resume link 
(SControl 3B8)
Mar  9 23:56:30 ftp2 kernel: [121494.180035] ata8: failed to resume link 
(SControl 4F0)
Mar  9 23:56:30 ftp2 kernel: [121494.340046] ata7: SATA link up 3.0 Gbps 
(SStatus 123 SControl 3B8)
Mar  9 23:56:30 ftp2 kernel: [121494.360070] ata8: SATA link up 3.0 Gbps 
(SStatus 123 SControl 4F0)
Mar  9 23:56:35 ftp2 kernel: [121499.340040] ata7.00: qc timeout (cmd 0xec)
Mar  9 23:56:35 ftp2 kernel: [121499.340053] ata7.00: failed to IDENTIFY (I/O 
error, err_mask=0x4)
Mar  9 23:56:35 ftp2 kernel: [121499.340058] ata7.00: revalidation failed 
(errno=-5)
Mar  9 23:56:35 ftp2 kernel: [121499.340065] ata7: hard resetting link
Mar  9 23:56:35 ftp2 kernel: [121499.360041] ata8.00: qc timeout (cmd 0xec)
Mar  9 23:56:35 ftp2 kernel: [121499.360054] ata8.00: failed to IDENTIFY (I/O 
error, err_mask=0x4)
Mar  9 23:56:35 ftp2 kernel: [121499.360058] ata8.00: revalidation failed 
(errno=-5)
Mar  9 23:56:35 ftp2 kernel: [121499.360063] ata8: hard resetting link
Mar  9 23:56:36 ftp2 kernel: [121500.430032] ata8: failed to resume link 
(SControl A12)
Mar  9 23:56:36 ftp2 kernel: [121500.610042] ata8: SATA link up 3.0 Gbps 
(SStatus 623 SControl A12)
Mar  9 23:56:36 ftp2 kernel: [121500.910026] ata7: failed to resume link 
(SControl 3AB)
Mar  9 23:56:41 ftp2 kernel: [121506.130047] ata7: SATA link up 1.5 Gbps 
(SStatus 113 SControl 3AB)
Mar  9 23:56:41 ftp2 kernel: [121506.130056] ata7.00: link online but device 
misclassifed
Mar  9 23:56:41 ftp2 kernel: [121506.130068] ata7.00: failed to IDENTIFY (I/O 
error, err_mask=0x40)
Mar  9 23:56:41 ftp2 kernel: [121506.130073] ata7.00: revalidation failed 
(errno=-5)
Mar  9 23:56:41 ftp2 kernel: [121506.130078] ata7: limiting SATA link speed to 
1.5 Gbps
Mar  9 23:56:46 ftp2 kernel: [121511.130060] ata7: hard resetting link
Mar  9 23:56:46 ftp2 kernel: [121511.130086] ata8.00: qc timeout (cmd 0xec)
Mar  9 23:56:46 ftp2 kernel: [121511.130098] ata8.00: failed to IDENTIFY (I/O 
error, err_mask=0x4)
Mar  9 23:56:46 ftp2 kernel: [121511.130102] ata8.00: revalidation failed 
(errno=-5)
Mar  9 23:56:46 ftp2 kernel: [121511.130108] ata8: limiting SATA link speed to 
1.5 Gbps
Mar  9 23:56:46 ftp2 kernel: [121511.130060] ata7: hard resetting link
Mar  9 23:56:46 ftp2 kernel: [121511.130086] ata8.00: qc timeout (cmd 0xec)
Mar  9 23:56:46 ftp2 kernel: [121511.130098] ata8.00: failed to IDENTIFY (I/O 
error, err_mask=0x4)
Mar  9 23:56:46 ftp2 kernel: [121511.130102] ata8.00: revalidation failed 
(errno=-5)
Mar  9 23:56:46 ftp2 kernel: [121511.130108] ata8: limiting SATA link speed to 
1.5 Gbps
Mar  9 23:56:46 ftp2 kernel: [121511.130114] ata8: hard resetting link
Mar  9 23:56:48 ftp2 kernel: [121512.200036] ata7: failed to resume link 
(SControl B63)
Mar  9 23:56:48 ftp2 kernel: [121512.200067] ata8: failed to resume link 
(SControl FBB)
Mar  9 23:56:56 ftp2 kernel: [121521.130040] ata8: softreset failed (1st FIS 
failed)
Mar  9 23:56:56 ftp2 kernel: [121521.130046] ata8: hard resetting link
Mar  9 23:56:56 ftp2 kernel: [121521.130117] ata7: softreset failed (1st FIS 
failed)
Mar  9 23:56:56 ftp2 kernel: [121521.130122] ata7: hard resetting link
Mar  9 23:56:58 ftp2 kernel: [121522.200015] ata8: failed to resume link 
(SControl 0)
Mar  9 23:56:58 ftp2 kernel: [121522.200033] ata7: failed to resume link 
(SControl 49)
Mar  9 23:57:06 ftp2 kernel: [121531.140041] ata7: softreset failed (1st FIS 
failed)
Mar  9 23:57:06 ftp2 kernel: [121531.140047] ata7: hard resetting link
Mar  9 23:57:06 ftp2 kernel: [121531.140082] ata8: softreset failed (device not 
ready)
Mar  9 23:57:06 ftp2 kernel: [121531.140086] ata8: hard resetting link
Mar  9 23:57:08 ftp2 kernel: [121532.210022] ata8: failed to resume link 
(SControl 810)
Mar  9 23:57:08 ftp2 kernel: [121532.210034] ata7: failed to resume link 
(SControl 0)
Mar  9 23:57:18 ftp2 kernel: [121542.470033] ata8: link is slow to respond, 
please be patient (ready=-19)
Mar  9 23:57:41 ftp2 kernel: [121566.140039] ata7: softreset failed (1st FIS 
failed)
Mar  9 23:57:41 ftp2 kernel: [121566.140047] ata7: hard resetting link
Mar  9 23:57:42 ftp2 kernel: [121566.170032] ata8: softreset failed (device not 
ready)
Mar  9 23:57:42 ftp2 kernel: [121566.170038] ata8: hard resetting link
Mar  9 23:57:43 ftp2 kernel: [121567.210047] ata7: failed to resume link 
(SControl 1)
Mar  9 23:57:43 ftp2 kernel: [121567.210068] ata7: SATA link down (SStatus 0 
SControl 1)
Mar  9 23:57:43 ftp2 kernel: [121567.210080] ata7.00: disabled
Mar  9 23:57:43 ftp2 kernel: [121567.210103] sd 6:0:0:0: [sdc]  Result: 
hostbyte=DID_OK driverbyte=DRIVER_SENSE
Mar  9 23:57:43 ftp2 kernel: [121567.210109] sd 6:0:0:0: [sdc]  Sense Key : 
Aborted Command [current] [descriptor]
Mar  9 23:57:43 ftp2 kernel: [121567.210117] Descriptor sense data with sense 
descriptors (in hex):
Mar  9 23:57:43 ftp2 kernel: [121567.210120]         72 0b 00 00 00 00 00 0c 00 
0a 80 00 00 00 00 00 
Mar  9 23:57:43 ftp2 kernel: [121567.210133]         6a 7a 72 bf 
Mar  9 23:57:43 ftp2 kernel: [121567.210140] sd 6:0:0:0: [sdc]  Add. Sense: No 
additional sense information
Mar  9 23:57:43 ftp2 kernel: [121567.210146] sd 6:0:0:0: [sdc] CDB: Write(10): 
2a 00 6a 7a 72 bf 00 00 80 00
Mar  9 23:57:43 ftp2 kernel: [121567.210159] end_request: I/O error, dev sdc, 
sector 1786409663
Mar  9 23:57:43 ftp2 kernel: [121567.210177] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210186] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210201] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210212] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210223] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210233] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210243] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210263] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210270] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210275] sd 6:0:0:0: rejecting I/O to 
offline device
Mar  9 23:57:43 ftp2 kernel: [121567.210283] ata7: EH complete
Mar  9 23:57:43 ftp2 kernel: [121567.210292] sd 6:0:0:0: [sdc] Unhandled error 
code
Mar  9 23:57:43 ftp2 kernel: [121567.210295] sd 6:0:0:0: [sdc]  Result: 
hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK
Mar  9 23:57:43 ftp2 kernel: [121567.210299] sd 6:0:0:0: [sdc] CDB: Write(10): 
2a 00 6a 7a 73 3f 00 00 80 00
Mar  9 23:57:43 ftp2 kernel: [121567.210308] end_request: I/O error, dev sdc, 
sector 1786409791
Mar  9 23:57:43 ftp2 kernel: [121567.210727] ata7.00: detaching (SCSI 6:0:0:0)
Mar  9 23:57:43 ftp2 kernel: [121567.240037] ata8: failed to resume link 
(SControl 45)
Mar  9 23:57:43 ftp2 kernel: [121567.250170] sd 6:0:0:0: [sdc] Synchronizing 
SCSI cache
Mar  9 23:57:43 ftp2 kernel: [121567.250220] sd 6:0:0:0: [sdc]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:57:43 ftp2 kernel: [121567.250227] sd 6:0:0:0: [sdc] Stopping disk
Mar  9 23:57:43 ftp2 kernel: [121567.250249] sd 6:0:0:0: [sdc] START_STOP FAILED
Mar  9 23:57:43 ftp2 kernel: [121567.250252] sd 6:0:0:0: [sdc]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:57:47 ftp2 kernel: [121571.380062] ata8: SATA link up 1.5 Gbps 
(SStatus 113 SControl 45)
Mar  9 23:58:17 ftp2 kernel: [121601.380051] ata8.00: qc timeout (cmd 0xec)
Mar  9 23:58:17 ftp2 kernel: [121601.380065] ata8.00: failed to IDENTIFY (I/O 
error, err_mask=0x4)
Mar  9 23:58:17 ftp2 kernel: [121601.380069] ata8.00: revalidation failed 
(errno=-5)
Mar  9 23:58:17 ftp2 kernel: [121601.380073] ata8.00: disabled
Mar  9 23:58:17 ftp2 kernel: [121601.380097] ata8: exception Emask 0x40 SAct 
0x0 SErr 0x4850800 action 0x6 frozen t4
Mar  9 23:58:17 ftp2 kernel: [121601.380104] ata8: SError: { HostInt PHYRdyChg 
CommWake LinkSeq DevExch }
Mar  9 23:58:17 ftp2 kernel: [121601.380114] ata8: hard resetting link
Mar  9 23:58:18 ftp2 kernel: [121602.450056] ata8: failed to resume link 
(SControl 2)
Mar  9 23:58:27 ftp2 kernel: [121611.390038] ata8: softreset failed (1st FIS 
failed)
Mar  9 23:58:27 ftp2 kernel: [121611.390044] ata8: hard resetting link
Mar  9 23:58:28 ftp2 kernel: [121612.460048] ata8: failed to resume link 
(SControl 0)
Mar  9 23:58:36 ftp2 proftpd[15555]: ftp2.wifizabreh.net 
(192.168.1.3[192.168.1.3]) - FTP session opened.
Mar  9 23:58:36 ftp2 proftpd[15555]: ftp2.wifizabreh.net 
(192.168.1.3[192.168.1.3]) - Preparing to chroot to directory '/FTP'
Mar  9 23:58:36 ftp2 proftpd[15555]: ftp2.wifizabreh.net 
(192.168.1.3[192.168.1.3]) - ANON ftp: Login successful.
Mar  9 23:58:37 ftp2 kernel: [121621.400039] ata8: softreset failed (1st FIS 
failed)
Mar  9 23:58:37 ftp2 kernel: [121621.400046] ata8: hard resetting link
Mar  9 23:58:38 ftp2 kernel: [121622.250035] ata8: failed to reset engine 
(errno=-5)
Mar  9 23:59:12 ftp2 kernel: [121656.410040] ata8: softreset failed (1st FIS 
failed)
Mar  9 23:59:12 ftp2 kernel: [121656.410049] ata8: hard resetting link
Mar  9 23:59:13 ftp2 kernel: [121657.270034] ata8: link resume succeeded after 
3 retries
Mar  9 23:59:17 ftp2 kernel: [121661.650051] ata8: SATA link up 1.5 Gbps 
(SStatus 113 SControl 310)
Mar  9 23:59:17 ftp2 kernel: [121661.650083] ata8: EH complete
Mar  9 23:59:17 ftp2 kernel: [121661.650173] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650177] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650184] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 d9 bf 00 00 80 00
Mar  9 23:59:17 ftp2 kernel: [121661.650197] end_request: I/O error, dev sdd, 
sector 1786370495
Mar  9 23:59:17 ftp2 kernel: [121661.650216] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650220] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650225] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 d9 3f 00 00 80 00
Mar  9 23:59:17 ftp2 kernel: [121661.650247] end_request: I/O error, dev sdd, 
sector 1786370367
Mar  9 23:59:17 ftp2 kernel: [121661.650255] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650257] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650262] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 da bf 00 00 80 00
Mar  9 23:59:17 ftp2 kernel: [121661.650270] end_request: I/O error, dev sdd, 
sector 1786370751
Mar  9 23:59:17 ftp2 kernel: [121661.650278] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650280] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650284] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 da 3f 00 00 80 00
Mar  9 23:59:17 ftp2 kernel: [121661.650293] end_request: I/O error, dev sdd, 
sector 1786370623
Mar  9 23:59:17 ftp2 kernel: [121661.650300] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650303] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650307] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 db 3f 00 00 80 00
Mar  9 23:59:17 ftp2 kernel: [121661.650316] end_request: I/O error, dev sdd, 
sector 1786370879
Mar  9 23:59:17 ftp2 kernel: [121661.650325] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650327] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650332] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 db bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650340] end_request: I/O error, dev sdd, 
sector 1786371007
Mar  9 23:59:17 ftp2 kernel: [121661.650356] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650359] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650363] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 df bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650372] end_request: I/O error, dev sdd, 
sector 1786372031
Mar  9 23:59:17 ftp2 kernel: [121661.650383] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650385] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650389] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 e3 bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650398] end_request: I/O error, dev sdd, 
sector 1786373055
Mar  9 23:59:17 ftp2 kernel: [121661.650409] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650411] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650415] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 e7 bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650424] end_request: I/O error, dev sdd, 
sector 1786374079
Mar  9 23:59:17 ftp2 kernel: [121661.650435] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650437] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650441] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 eb bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650450] end_request: I/O error, dev sdd, 
sector 1786375103
Mar  9 23:59:17 ftp2 kernel: [121661.650460] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650463] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650467] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 ef bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650476] end_request: I/O error, dev sdd, 
sector 1786376127
Mar  9 23:59:17 ftp2 kernel: [121661.650486] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650489] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650493] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 f3 bf 00 04 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650502] end_request: I/O error, dev sdd, 
sector 1786377151
Mar  9 23:59:17 ftp2 kernel: [121661.650510] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650513] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650517] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 f7 bf 00 00 90 00
Mar  9 23:59:17 ftp2 kernel: [121661.650525] end_request: I/O error, dev sdd, 
sector 1786378175
Mar  9 23:59:17 ftp2 kernel: [121661.650531] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.650534] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.650538] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 00 d0 75 3f 00 01 00 00
Mar  9 23:59:17 ftp2 kernel: [121661.650547] end_request: I/O error, dev sdd, 
sector 13661503
Mar  9 23:59:17 ftp2 kernel: [121661.651378] lost page write due to I/O error 
on sdc1
Mar  9 23:59:17 ftp2 kernel: [121661.651411] lost page write due to I/O error 
on sdc1
Mar  9 23:59:17 ftp2 kernel: [121661.651445] end_request: I/O error, dev sdc, 
sector 536870912
Mar  9 23:59:17 ftp2 kernel: [121661.651447] lost page write due to I/O error 
on sdc1
Mar  9 23:59:17 ftp2 kernel: [121661.651463] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.651466] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.651470] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 00 00 00 bf 00 00 08 00
Mar  9 23:59:17 ftp2 kernel: [121661.651479] end_request: I/O error, dev sdd, 
sector 191
Mar  9 23:59:17 ftp2 kernel: [121661.651482] lost page write due to I/O error 
on sdd1
Mar  9 23:59:17 ftp2 kernel: [121661.651489] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.651492] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.651496] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 00 02 00 3f 00 00 08 00
Mar  9 23:59:17 ftp2 kernel: [121661.651505] end_request: I/O error, dev sdd, 
sector 131135
Mar  9 23:59:17 ftp2 kernel: [121661.651508] lost page write due to I/O error 
on sdd1
Mar  9 23:59:17 ftp2 kernel: [121661.651518] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.651521] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.651525] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 20 00 00 3f 00 00 08 00
Mar  9 23:59:17 ftp2 kernel: [121661.651533] end_request: I/O error, dev sdd, 
sector 536870975
Mar  9 23:59:17 ftp2 kernel: [121661.651540] end_request: I/O error, dev sdd, 
sector 536870975
Mar  9 23:59:17 ftp2 kernel: [121661.651543] lost page write due to I/O error 
on sdd1
Mar  9 23:59:17 ftp2 kernel: [121661.732781] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:17 ftp2 kernel: [121661.732785] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:17 ftp2 kernel: [121661.732790] sd 7:0:0:0: [sdd] CDB: Read(10): 
28 00 00 d0 75 57 00 00 08 00
Mar  9 23:59:17 ftp2 kernel: [121661.732801] end_request: I/O error, dev sdd, 
sector 13661527
Mar  9 23:59:17 ftp2 kernel: [121661.732937] ------------[ cut here 
]------------
Mar  9 23:59:17 ftp2 kernel: [121661.737741] kernel BUG at 
fs/btrfs/inode.c:2897!
Mar  9 23:59:17 ftp2 kernel: [121661.742630] invalid opcode: 0000 [#1] SMP 
Mar  9 23:59:17 ftp2 kernel: [121661.742911] last sysfs file: 
/sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/host7/target7:0:0/7:0:0:0/block/sdd/sdd1/uevent
Mar  9 23:59:17 ftp2 kernel: [121661.742911] CPU 0 
Mar  9 23:59:17 ftp2 kernel: [121661.742911] Modules linked in: usblp btrfs 
zlib_deflate crc32c libcrc32c tun coretemp it87 hwmon_vid nfsd lockd 
auth_rpcgss sunrpc exportfs fuse dummy dm_mod ehci_hcd iTCO_wdt uhci_hcd 
iTCO_vendor_support usbcore i2c_i801 i2c_core sky2 intel_agp pcspkr intel_gtt 
sg processor button
Mar  9 23:59:17 ftp2 kernel: [121661.742911] 
Mar  9 23:59:17 ftp2 kernel: [121661.742911] Pid: 15572, comm: rm Not tainted 
2.6.37-gentoo-mykernel #2 965GM-S2/965GM-S2
Mar  9 23:59:17 ftp2 kernel: [121661.742911] RIP: 0010:[]  [] 
btrfs_unlink+0x74/0xe7 [btrfs]
Mar  9 23:59:17 ftp2 kernel: [121661.742911] RSP: 0018:ffff880123e3be68  
EFLAGS: 00010282
Mar  9 23:59:17 ftp2 kernel: [121661.742911] RAX: 00000000fffffffb RBX: 
ffff880103770900 RCX: ffff8801277ce510
Mar  9 23:59:17 ftp2 kernel: [121661.742911] RDX: 0000000000000000 RSI: 
ffffea00040a3510 RDI: ffff8801277ce480
Mar  9 23:59:17 ftp2 kernel: [121661.742911] RBP: ffff880106db2028 R08: 
fffffffffffffffb R09: 0000000000000000
Mar  9 23:59:17 ftp2 kernel: [121661.742911] R10: 0000000000000400 R11: 
ffff880127ab76c0 R12: ffff880041976180
Mar  9 23:59:17 ftp2 kernel: [121661.742911] R13: ffff880123f2a800 R14: 
ffff8800633e54b8 R15: 00000000fffffffb
Mar  9 23:59:17 ftp2 kernel: [121661.742911] FS:  00007f6844ee9700(0000) 
GS:ffff8800cf400000(0000) knlGS:0000000000000000
Mar  9 23:59:17 ftp2 kernel: [121661.742911] CS:  0010 DS: 0000 ES: 0000 CR0: 
000000008005003b
Mar  9 23:59:17 ftp2 kernel: [121661.742911] CR2: 00007fa5e4712bc8 CR3: 
0000000115117000 CR4: 00000000000006f0
Mar  9 23:59:17 ftp2 kernel: [121661.742911] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Mar  9 23:59:17 ftp2 kernel: [121661.742911] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Mar  9 23:59:17 ftp2 kernel: [121661.742911] Process rm (pid: 15572, threadinfo 
ffff880123e3a000, task ffff880127ab76c0)
Mar  9 23:59:17 ftp2 kernel: [121661.742911] Stack:
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  00000000fffffff0 ffff880041976180 
00000000fffffff0 ffff880106db2028
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  00000000ffffff9c 000000000060f030 
0000000000000003 ffffffff810b5fb0
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  ffff8800633e54b8 ffff880041976180 
0000000000000000 ffffffff810b80b8
Mar  9 23:59:17 ftp2 kernel: [121661.742911] Call Trace:
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  [] ? vfs_unlink+0x5b/0xb9
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  [] ? do_unlinkat+0xbe/0x145
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  [] ? page_fault+0x1f/0x30
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  [] ? 
system_call_fastpath+0x16/0x1b
Mar  9 23:59:17 ftp2 kernel: [121661.742911] Code: 24 10 e8 da eb 01 00 49 8b 
4c 24 10 45 8b 4c 24 34 48 89 ea 4d 8b 44 24 38 4c 89 ee 48 89 df e8 7a f3 ff 
ff 85 c0 41 89 c7 74 04  0b eb fe 41 83 7e 5c 00 75 13 4c 89 f6 48 89 df e8 9f 
f8 ff 
Mar  9 23:59:17 ftp2 kernel: [121661.742911] RIP  [] btrfs_unlink+0x74/0xe7 
[btrfs]
Mar  9 23:59:17 ftp2 kernel: [121661.742911]  RSP 
Mar  9 23:59:17 ftp2 kernel: [121661.991467] ---[ end trace e58b77d4855c2f73 
]---
Mar  9 23:59:23 ftp2 kernel: [121668.128813] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:24 ftp2 kernel: [121668.136408] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:24 ftp2 kernel: [121668.144133] sd 7:0:0:0: [sdd] CDB: Read(10): 
28 00 00 cf 92 67 00 00 08 00
Mar  9 23:59:24 ftp2 kernel: [121668.144142] end_request: I/O error, dev sdd, 
sector 13603431
Mar  9 23:59:24 ftp2 kernel: [121668.144190] ------------[ cut here 
]------------
Mar  9 23:59:24 ftp2 kernel: [121668.144193] kernel BUG at fs/btrfs/ctree.c:310!
Mar  9 23:59:24 ftp2 kernel: [121668.144195] invalid opcode: 0000 [#2] SMP 
Mar  9 23:59:24 ftp2 kernel: [121668.144198] last sysfs file: 
/sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/host7/target7:0:0/7:0:0:0/block/sdd/sdd1/uevent
Mar  9 23:59:24 ftp2 kernel: [121668.144201] CPU 0 
Mar  9 23:59:24 ftp2 kernel: [121668.144203] Modules linked in: usblp btrfs 
zlib_deflate crc32c libcrc32c tun coretemp it87 hwmon_vid nfsd lockd 
auth_rpcgss sunrpc exportfs fuse dummy dm_mod ehci_hcd iTCO_wdt uhci_hcd 
iTCO_vendor_support usbcore i2c_i801 i2c_core sky2 intel_agp pcspkr intel_gtt 
sg processor button
Mar  9 23:59:24 ftp2 kernel: [121668.144222] 
Mar  9 23:59:24 ftp2 kernel: [121668.144226] Pid: 15555, comm: proftpd Tainted: 
G      D     2.6.37-gentoo-mykernel #2 965GM-S2/965GM-S2
Mar  9 23:59:24 ftp2 kernel: [121668.144230] RIP: 0010:[]  [] 
update_ref_for_cow+0x48/0x260 [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144247] RSP: 0018:ffff880125e9b8e8  
EFLAGS: 00010282
Mar  9 23:59:24 ftp2 kernel: [121668.144250] RAX: 00000000fffffffb RBX: 
ffff880106e7d770 RCX: ffff8801277ce360
Mar  9 23:59:24 ftp2 kernel: [121668.144253] RDX: 0000000000000000 RSI: 
ffffea00040a3510 RDI: ffff8801277ce510
Mar  9 23:59:24 ftp2 kernel: [121668.144256] RBP: ffff880123f2a800 R08: 
0000000000000001 R09: 0000000000000000
Mar  9 23:59:24 ftp2 kernel: [121668.144259] R10: ffff8801264e6ae0 R11: 
ffff8801264e6ae0 R12: ffff8801037708c0
Mar  9 23:59:24 ftp2 kernel: [121668.144262] R13: ffff880050a8cee0 R14: 
ffff880125e9b984 R15: ffff880125e9ba98
Mar  9 23:59:24 ftp2 kernel: [121668.144265] FS:  00007fa659d5b700(0000) 
GS:ffff8800cf400000(0000) knlGS:0000000000000000
Mar  9 23:59:24 ftp2 kernel: [121668.144268] CS:  0010 DS: 0000 ES: 0000 CR0: 
0000000080050033
Mar  9 23:59:24 ftp2 kernel: [121668.144271] CR2: 00000000004482a0 CR3: 
0000000123e39000 CR4: 00000000000006f0
Mar  9 23:59:24 ftp2 kernel: [121668.144274] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Mar  9 23:59:24 ftp2 kernel: [121668.144277] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Mar  9 23:59:24 ftp2 kernel: [121668.144280] Process proftpd (pid: 15555, 
threadinfo ffff880125e9a000, task ffff8801264e6ae0)
Mar  9 23:59:24 ftp2 kernel: [121668.144282] Stack:
Mar  9 23:59:24 ftp2 kernel: [121668.144284]  0000000000000354 ffff880123f2a800 
ffff880123f2a800 ffff880106e7d770
Mar  9 23:59:24 ftp2 kernel: [121668.144288]  ffff880050a8cee0 ffff8801037708c0 
ffff880050a8ce58 ffffffffa01b8556
Mar  9 23:59:24 ftp2 kernel: [121668.144292]  ffff880100000000 000004ed00000000 
0000000000000000 0000000000005924
Mar  9 23:59:24 ftp2 kernel: [121668.144296] Call Trace:
Mar  9 23:59:24 ftp2 kernel: [121668.144308]  [] ? 
__btrfs_cow_block+0x320/0x55e [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144322]  [] ? 
btrfs_buffer_uptodate+0x3b/0x48 [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144333]  [] ? btrfs_cow_block+0x17f/0x19d 
[btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144344]  [] ? 
btrfs_search_slot+0x724/0x774 [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144355]  [] ? 
btrfs_insert_empty_items+0x62/0xb5 [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144368]  [] ? 
insert_with_overflow+0x30/0xec [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144381]  [] ? 
btrfs_insert_dir_item+0x83/0x266 [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144391]  [] ? btrfs_release_path+0x3b/0x52 
[btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144405]  [] ? __btrfs_getxattr+0xed/0xff 
[btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144420]  [] ? btrfs_add_link+0x108/0x160 
[btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144435]  [] ? btrfs_add_nondir+0x25/0x4e 
[btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144450]  [] ? 
btrfs_init_inode_security+0x12/0x2d [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144464]  [] ? btrfs_create+0xfb/0x1b5 
[btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144471]  [] ? vfs_create+0x77/0xd0
Mar  9 23:59:24 ftp2 kernel: [121668.144475]  [] ? do_last+0x2f4/0x617
Mar  9 23:59:24 ftp2 kernel: [121668.144479]  [] ? do_filp_open+0x1ed/0x5ad
Mar  9 23:59:24 ftp2 kernel: [121668.144484]  [] ? do_sys_open+0x56/0xde
Mar  9 23:59:24 ftp2 kernel: [121668.144489]  [] ? 
system_call_fastpath+0x16/0x1b
Mar  9 23:59:24 ftp2 kernel: [121668.144491] Code: 48 83 ec 10 e8 64 c0 ff ff 
85 c0 74 2e 48 8b 4b 08 48 8b 13 4c 8d 44 24 08 49 89 e1 48 89 ee 4c 89 e7 e8 
06 b0 00 00 85 c0 74 04  0b eb fe 48 83 7c 24 08 00 75 7c 0f 0b eb fe 48 c7 44 
24 08 
Mar  9 23:59:24 ftp2 kernel: [121668.144512] RIP  [] 
update_ref_for_cow+0x48/0x260 [btrfs]
Mar  9 23:59:24 ftp2 kernel: [121668.144523]  RSP 
Mar  9 23:59:24 ftp2 kernel: [121668.144526] ---[ end trace e58b77d4855c2f74 
]---
Mar  9 23:59:26 ftp2 proftpd[15574]: ftp2.wifizabreh.net 
(192.168.1.3[192.168.1.3]) - FTP session opened.
Mar  9 23:59:26 ftp2 proftpd[15574]: ftp2.wifizabreh.net 
(192.168.1.3[192.168.1.3]) - Preparing to chroot to directory '/FTP'
Mar  9 23:59:26 ftp2 proftpd[15574]: ftp2.wifizabreh.net 
(192.168.1.3[192.168.1.3]) - ANON ftp: Login successful.
Mar  9 23:59:47 ftp2 kernel: [121691.690225] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:47 ftp2 kernel: [121691.697091] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:47 ftp2 kernel: [121691.703936] sd 7:0:0:0: [sdd] CDB: Read(10): 
28 00 00 d0 75 f7 00 00 08 00
Mar  9 23:59:47 ftp2 kernel: [121691.704123] end_request: I/O error, dev sdd, 
sector 13661687
Mar  9 23:59:47 ftp2 kernel: [121691.704172] ------------[ cut here 
]------------
Mar  9 23:59:47 ftp2 kernel: [121691.704174] kernel BUG at 
fs/btrfs/extent-tree.c:5420!
Mar  9 23:59:47 ftp2 kernel: [121691.704177] invalid opcode: 0000 [#3] SMP 
Mar  9 23:59:47 ftp2 kernel: [121691.704180] last sysfs file: 
/sys/devices/pci0000:00/0000:00:1c.2/0000:03:00.0/host7/target7:0:0/7:0:0:0/block/sdd/sdd1/uevent
Mar  9 23:59:47 ftp2 kernel: [121691.704183] CPU 1 
Mar  9 23:59:47 ftp2 kernel: [121691.704185] Modules linked in: usblp btrfs 
zlib_deflate crc32c libcrc32c tun coretemp it87 hwmon_vid nfsd lockd 
auth_rpcgss sunrpc exportfs fuse dummy dm_mod ehci_hcd iTCO_wdt uhci_hcd 
iTCO_vendor_support usbcore i2c_i801 i2c_core sky2 intel_agp pcspkr intel_gtt 
sg processor button
Mar  9 23:59:47 ftp2 kernel: [121691.704204] 
Mar  9 23:59:47 ftp2 kernel: [121691.704208] Pid: 4883, comm: btrfs-transacti 
Tainted: G      D     2.6.37-gentoo-mykernel #2 965GM-S2/965GM-S2
Mar  9 23:59:47 ftp2 kernel: [121691.704212] RIP: 0010:[]  [] 
alloc_reserved_file_extent+0xa3/0x218 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704231] RSP: 0018:ffff880121ac5bf0  
EFLAGS: 00010282
Mar  9 23:59:47 ftp2 kernel: [121691.704234] RAX: 00000000fffffffb RBX: 
ffff8801238136c0 RCX: ffff880121ac5b40
Mar  9 23:59:47 ftp2 kernel: [121691.704238] RDX: ffff88005ee2be80 RSI: 
ffff8801238136c0 RDI: 0000000000000000
Mar  9 23:59:47 ftp2 kernel: [121691.704241] RBP: ffff880121ac5d10 R08: 
0000000000000001 R09: 0000000000000000
Mar  9 23:59:47 ftp2 kernel: [121691.704244] R10: ffff880121ac5d10 R11: 
000000000000004e R12: 00000000000000b2
Mar  9 23:59:47 ftp2 kernel: [121691.704247] R13: 0000000000000000 R14: 
ffff8801037b8d00 R15: ffff880124d17800
Mar  9 23:59:47 ftp2 kernel: [121691.704251] FS:  0000000000000000(0000) 
GS:ffff8800cf500000(0000) knlGS:0000000000000000
Mar  9 23:59:47 ftp2 kernel: [121691.704254] CS:  0010 DS: 0000 ES: 0000 CR0: 
000000008005003b
Mar  9 23:59:47 ftp2 kernel: [121691.704257] CR2: 00000000006fa1b0 CR3: 
0000000124dd8000 CR4: 00000000000006e0
Mar  9 23:59:47 ftp2 kernel: [121691.704260] DR0: 0000000000000000 DR1: 
0000000000000000 DR2: 0000000000000000
Mar  9 23:59:47 ftp2 kernel: [121691.704264] DR3: 0000000000000000 DR6: 
00000000ffff0ff0 DR7: 0000000000000400
Mar  9 23:59:47 ftp2 kernel: [121691.704267] Process btrfs-transacti (pid: 
4883, threadinfo ffff880121ac4000, task ffff88012640d320)
Mar  9 23:59:47 ftp2 kernel: [121691.704269] Stack:
ar  9 23:59:47 ftp2 kernel: [121691.704271]  ffff880125c68000 ffff88010000001d 
ffff8800cf511280 ffff8800cf511280
Mar  9 23:59:47 ftp2 kernel: [121691.704275]  ffff8800cf5112f0 0000000000000005 
0000000000000000 0000000000008d6c
Mar  9 23:59:47 ftp2 kernel: [121691.704279]  ffff8801271e8608 000000355a7bf600 
ffff8800cac3b0f0 ffff8800377d9ea0
Mar  9 23:59:47 ftp2 kernel: [121691.704284] Call Trace:
Mar  9 23:59:47 ftp2 kernel: [121691.704297]  [] ? 
run_clustered_refs+0x667/0x771 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704304]  [] ? schedule+0x6ff/0x79d
Mar  9 23:59:47 ftp2 kernel: [121691.704315]  [] ? 
tree_search_offset+0x128/0x1ab [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704328]  [] ? 
btrfs_run_delayed_refs+0xcd/0x1c0 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704343]  [] ? 
btrfs_commit_transaction+0x7e/0x61e [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704349]  [] ? 
autoremove_wake_function+0x0/0x2a
Mar  9 23:59:47 ftp2 kernel: [121691.704363]  [] ? 
transaction_kthread+0x16d/0x214 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704376]  [] ? 
transaction_kthread+0x0/0x214 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704389]  [] ? 
transaction_kthread+0x0/0x214 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704394]  [] ? kthread+0x7a/0x82
Mar  9 23:59:47 ftp2 kernel: [121691.704398]  [] ? kernel_thread_helper+0x4/0x10
Mar  9 23:59:47 ftp2 kernel: [121691.704402]  [] ? kthread+0x0/0x82
Mar  9 23:59:47 ftp2 kernel: [121691.704406]  [] ? kernel_thread_helper+0x0/0x10
Mar  9 23:59:47 ftp2 kernel: [121691.704408] Code: 00 00 08 83 c2 18 4c 8d 44 
24 4c 48 8b 71 20 41 b9 01 00 00 00 89 54 24 4c 48 89 e9 48 89 c2 4c 89 f7 e8 
88 b0 ff ff 85 c0 74 04  0b eb fe 48 8b 03 48 89 44 24 10 48 63 73 40 48 89 c7 
48 6b 
Mar  9 23:59:47 ftp2 kernel: [121691.704429] RIP  [] 
alloc_reserved_file_extent+0xa3/0x218 [btrfs]
Mar  9 23:59:47 ftp2 kernel: [121691.704441]  RSP 
Mar  9 23:59:47 ftp2 kernel: [121691.704444] ---[ end trace e58b77d4855c2f75 
]---
Mar  9 23:59:52 ftp2 kernel: [121696.650612] sd 7:0:0:0: [sdd] Unhandled error 
code
Mar  9 23:59:52 ftp2 kernel: [121696.657920] sd 7:0:0:0: [sdd]  Result: 
hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
Mar  9 23:59:52 ftp2 kernel: [121696.665378] sd 7:0:0:0: [sdd] CDB: Write(10): 
2a 00 6a 79 f8 4f 00 00 70 00
Mar  9 23:59:52 ftp2 kernel: [121696.665543] end_request: I/O error, dev sdd, 
sector 1786378319
============================================
 ftp2 ~ # btrfsck /dev/sdd1
btrfsck: disk-io.c:739: open_ctree_fd: Assertion `!(!tree_root->node)' failed.
Aborted
============================================
 ftp2 ~ # uname -a
Linux ftp2 2.6.37-gentoo-mykernel #2 SMP Fri Jan 28 00:39:02 CET 2011 x86_64 
Genuine Intel(R) CPU 2140 @ 1.60GHz GenuineIntel GNU/Linux
============================================
 
I also tried "btrfs-select-super" from git on all disks (sdb1,sdc1,sdd1) with 
"-s 1" and "-s 2" and nothing helped.

Only one good thing is that this is "backup machine" so I can tranfer all data 
from "main machine". But it is 3TB so it would take about 40days to fully 
transfer all data :-(

Is there any possible way to (partially) restore some data? (I use rsync 
syncing data between both machines)
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