Hi, Recently I have my RAID5 freeze up twice within one month, both with single disk failure, /dev/sda. The RAID5 doesn't go to degrade mode, all processes from nfs clients trying to access the freezed RAID5 stuck in "D" state, the nfs server running the RAID5 cannot be shutdown, only power button works. The nfs server is running kernel 2.6.15.2 Actually I wonder it's really disk (sda) failure or not, I haven't test the drive yet. However I found something like: Feb 27 18:26:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 maybe libata problem? /dev/sda is Hitachi T7K250 250GB SATAII running at 1.5Gb/s, connected to motherboard onboard Nvidia 6150 chipset SATA port #1 Please CC me if possible, thanks. lspci: 00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.1 RAM memory: nVidia Corporation C51 Memory Controller 0 (rev a2) 00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2) 00:00.3 RAM memory: nVidia Corporation C51 Memory Controller 5 (rev a2) 00:00.4 RAM memory: nVidia Corporation C51 Memory Controller 4 (rev a2) 00:00.5 RAM memory: nVidia Corporation C51 Host Bridge (rev a2) 00:00.6 RAM memory: nVidia Corporation C51 Memory Controller 3 (rev a2) 00:00.7 RAM memory: nVidia Corporation C51 Memory Controller 2 (rev a2) 00:02.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:03.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:04.0 PCI bridge: nVidia Corporation C51 PCI Express Bridge (rev a1) 00:05.0 VGA compatible controller: nVidia Corporation C51 PCI Express Bridge (rev a2) 00:09.0 RAM memory: nVidia Corporation MCP51 Host Bridge (rev a2) 00:0a.0 ISA bridge: nVidia Corporation MCP51 LPC Bridge (rev a2) 00:0a.1 SMBus: nVidia Corporation MCP51 SMBus (rev a2) 00:0a.2 RAM memory: nVidia Corporation MCP51 Memory Controller 0 (rev a2) 00:0d.0 IDE interface: nVidia Corporation MCP51 IDE (rev a1) 00:0e.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:0f.0 IDE interface: nVidia Corporation MCP51 Serial ATA Controller (rev a1) 00:10.0 PCI bridge: nVidia Corporation MCP51 PCI Bridge (rev a2) 00:14.0 Bridge: nVidia Corporation MCP51 Ethernet Controller (rev a1) 00:18.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:18.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] AddressMap 00:18.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:18.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 03:00.0 RAID bus controller: Silicon Image, Inc.: Unknown device 3132 (rev 01) 04:06.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) 04:08.0 Ethernet controller: VIA Technologies, Inc. VT6105 [Rhine-III] (rev 8b) /var/log/message: Feb 27 18:26:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:26:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:26:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:26:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:26:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:26:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:26:11 images1 kernel: end_request: I/O error, dev sda, sector 44318183 Feb 27 18:26:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:26:11 images1 last message repeated 2 times Feb 27 18:26:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:26:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:26:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:26:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:26:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:26:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:26:41 images1 kernel: end_request: I/O error, dev sda, sector 44318191 Feb 27 18:26:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:26:41 images1 last message repeated 2 times Feb 27 18:27:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:27:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:27:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:27:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:27:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:27:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:27:11 images1 kernel: end_request: I/O error, dev sda, sector 44318199 Feb 27 18:27:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:27:11 images1 last message repeated 2 times Feb 27 18:27:23 images1 PAM-securetty[4594]: access denied: tty 'pts/0' is not secure ! Feb 27 18:27:28 images1 login[4594]: FAILED LOGIN 1 FROM 152.101.81.89 FOR root, Authentication failure Feb 27 18:27:32 images1 remote(pam_unix)[4594]: session opened for user kyle by (uid=0) Feb 27 18:27:32 images1 -- kyle[4594]: LOGIN ON pts/0 BY kyle FROM 152.101.81.89 Feb 27 18:27:36 images1 su(pam_unix)[4619]: authentication failure; logname= uid=500 euid=0 tty=pts/0 ruser=kyle rhost= user=root Feb 27 18:27:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:27:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:27:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:27:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:27:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:27:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:27:41 images1 kernel: end_request: I/O error, dev sda, sector 44318207 Feb 27 18:27:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:27:41 images1 last message repeated 2 times Feb 27 18:27:42 images1 su(pam_unix)[4620]: session opened for user root by (uid=500) Feb 27 18:28:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:28:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:28:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:28:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:28:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:28:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:28:11 images1 kernel: end_request: I/O error, dev sda, sector 44318231 Feb 27 18:28:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:28:11 images1 last message repeated 2 times Feb 27 18:28:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:28:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:28:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:28:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:28:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:28:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:28:41 images1 kernel: end_request: I/O error, dev sda, sector 44318239 Feb 27 18:28:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:28:41 images1 last message repeated 2 times Feb 27 18:29:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:29:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:29:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:29:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:29:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:29:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:29:11 images1 kernel: end_request: I/O error, dev sda, sector 336291503 Feb 27 18:29:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:29:11 images1 last message repeated 2 times Feb 27 18:29:35 images1 telnetd[4906]: ttloop: read: Connection reset by peer Feb 27 18:29:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:29:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:29:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:29:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:29:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:29:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:29:41 images1 kernel: end_request: I/O error, dev sda, sector 336390743 Feb 27 18:29:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:29:41 images1 last message repeated 2 times Feb 27 18:30:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:30:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:30:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:30:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:30:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:30:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:30:11 images1 kernel: end_request: I/O error, dev sda, sector 336390751 Feb 27 18:30:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:30:11 images1 last message repeated 2 times Feb 27 18:30:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:30:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:30:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:30:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:30:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:30:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:30:41 images1 kernel: end_request: I/O error, dev sda, sector 336390759 Feb 27 18:30:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:30:41 images1 last message repeated 2 times Feb 27 18:31:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:31:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:31:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:31:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:31:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:31:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:31:11 images1 kernel: end_request: I/O error, dev sda, sector 336390767 Feb 27 18:31:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:31:11 images1 last message repeated 2 times Feb 27 18:31:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:31:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:31:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:31:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:31:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:31:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:31:41 images1 kernel: end_request: I/O error, dev sda, sector 336390775 Feb 27 18:31:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:31:41 images1 last message repeated 2 times Feb 27 18:32:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:32:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:32:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:32:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:32:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:32:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:32:11 images1 kernel: end_request: I/O error, dev sda, sector 336390783 Feb 27 18:32:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:32:11 images1 last message repeated 2 times Feb 27 18:32:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:32:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:32:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:32:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:32:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:32:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:32:41 images1 kernel: end_request: I/O error, dev sda, sector 336390791 Feb 27 18:32:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:32:41 images1 last message repeated 2 times Feb 27 18:32:44 images1 su(pam_unix)[4620]: session closed for user root Feb 27 18:32:45 images1 remote(pam_unix)[4594]: session closed for user kyle Feb 27 18:33:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:33:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:33:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:33:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:33:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:33:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:33:11 images1 kernel: end_request: I/O error, dev sda, sector 336390799 Feb 27 18:33:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:33:11 images1 last message repeated 2 times Feb 27 18:33:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:33:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:33:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:33:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:33:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:33:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:33:41 images1 kernel: end_request: I/O error, dev sda, sector 336390807 Feb 27 18:33:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:33:41 images1 last message repeated 2 times Feb 27 18:34:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:34:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:34:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:34:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:34:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:34:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:34:11 images1 kernel: end_request: I/O error, dev sda, sector 336390815 Feb 27 18:34:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:34:11 images1 last message repeated 2 times Feb 27 18:34:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:34:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:34:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:34:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:34:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:34:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:34:41 images1 kernel: end_request: I/O error, dev sda, sector 336390823 Feb 27 18:34:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:34:41 images1 last message repeated 2 times Feb 27 18:35:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:35:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:35:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:35:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:35:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:35:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:35:11 images1 kernel: end_request: I/O error, dev sda, sector 336390831 Feb 27 18:35:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:35:11 images1 last message repeated 2 times Feb 27 18:35:41 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:35:41 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:35:41 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:35:41 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:35:41 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:35:41 images1 kernel: Additional sense: Scsi parity error Feb 27 18:35:41 images1 kernel: end_request: I/O error, dev sda, sector 336390839 Feb 27 18:35:41 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:35:41 images1 last message repeated 2 times Feb 27 18:36:11 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 18:36:11 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 18:36:11 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 18:36:11 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 18:36:11 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 18:36:11 images1 kernel: Additional sense: Scsi parity error Feb 27 18:36:11 images1 kernel: end_request: I/O error, dev sda, sector 336390847 Feb 27 18:36:11 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 18:36:11 images1 last message repeated 2 times .......................... .......................... .......................... Feb 27 19:46:12 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 19:46:12 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 19:46:12 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 19:46:12 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 19:46:12 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 19:46:12 images1 kernel: Additional sense: Scsi parity error Feb 27 19:46:12 images1 kernel: end_request: I/O error, dev sda, sector 336391695 Feb 27 19:46:12 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 Feb 27 19:46:12 images1 last message repeated 2 times Feb 27 19:46:14 images1 shutdown: shutting down for system reboot Feb 27 19:46:40 images1 login(pam_unix)[5137]: session opened for user root by (uid=0) Feb 27 19:46:41 images1 -- root[5137]: ROOT LOGIN ON tty3 Feb 27 19:46:42 images1 kernel: ata1: command 0x25 timeout, stat 0xd0 host_stat 0x21 Feb 27 19:46:42 images1 kernel: ata1: translated ATA stat/err 0xd0/00 to SCSI SK/ASC/ASCQ 0xb/47/00 Feb 27 19:46:42 images1 kernel: ata1: status=0xd0 { Busy } Feb 27 19:46:42 images1 kernel: sd 0:0:0:0: SCSI error: return code = 0x8000002 Feb 27 19:46:42 images1 kernel: sda: Current: sense key: Aborted Command Feb 27 19:46:42 images1 kernel: Additional sense: Scsi parity error Feb 27 19:46:42 images1 kernel: end_request: I/O error, dev sda, sector 336391703 Feb 27 19:46:42 images1 kernel: ATA: abnormal status 0xD0 on port 0x9F7 ..................................... Cannot shutdown, power off. Thanks a lot, Kyle - : send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html