System info: Linux 2.6.20-1.2320.fc5 SMP x86_64 lspci: 00:06.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8111 PCI (rev 07) 00:07.0 ISA bridge: Advanced Micro Devices [AMD] AMD-8111 LPC (rev 05) 00:07.1 IDE interface: Advanced Micro Devices [AMD] AMD-8111 IDE (rev 03) 00:07.2 SMBus: Advanced Micro Devices [AMD] AMD-8111 SMBus 2.0 (rev 02) 00:07.3 Bridge: Advanced Micro Devices [AMD] AMD-8111 ACPI (rev 05) 00:07.5 Multimedia audio controller: Advanced Micro Devices [AMD] AMD-8111 AC97 Audio (rev 03) 00:0a.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge (rev 12) 00:0a.1 PIC: Advanced Micro Devices [AMD] AMD-8131 PCI-X IOAPIC (rev 01) 00:0b.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8131 PCI-X Bridge (rev 12) 00:0b.1 PIC: Advanced Micro Devices [AMD] AMD-8131 PCI-X IOAPIC (rev 01) 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] Address Map 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 00:19.0 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] HyperTransport Technology Configuration 00:19.1 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Address Map 00:19.2 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] DRAM Controller 00:19.3 Host bridge: Advanced Micro Devices [AMD] K8 [Athlon64/Opteron] Miscellaneous Control 01:00.0 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b) 01:00.1 USB Controller: Advanced Micro Devices [AMD] AMD-8111 USB (rev 0b) 01:0a.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) 01:0a.1 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) 01:0a.2 USB Controller: ALi Corporation USB 1.1 Controller (rev 03) 01:0a.3 USB Controller: ALi Corporation USB 2.0 Controller (rev 01) 01:0a.4 FireWire (IEEE 1394): ALi Corporation M5253 P1394 OHCI 1.1 Controller 01:0c.0 FireWire (IEEE 1394): Texas Instruments TSB43AB22/A IEEE-1394a-2000 Controller (PHY/Link) 02:07.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068 PCI-X Fusion-MPT SAS (rev 01) 02:09.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5703X Gigabit Ethernet (rev 02) 03:06.0 SCSI storage controller: Adaptec AIC-7892A U160/m (rev 02) 04:00.0 Host bridge: Advanced Micro Devices [AMD] AMD-8151 System Controller (rev 13) 04:01.0 PCI bridge: Advanced Micro Devices [AMD] AMD-8151 AGP Bridge (rev 13) 05:00.0 VGA compatible controller: ATI Technologies Inc RV280 [Radeon 9200] (rev 01) 05:00.1 Display controller: ATI Technologies Inc RV280 [Radeon 9200] (Secondary) (rev 01) % cat /proc/scsi/mptsas/1 ioc0: LSISAS1068, FwRev=01120000h, Ports=1, MaxQ=511 I have four SATA drives attached to the SAS1068X-R controller, all four are Seagate ST3750640AS (750 GB Barracuda 7200.10) with firmware revision 3.AAE. I was doing load-testing for a RAID array and running badblocks in a loop over all four drives in parallel. One drive was dropped after about 24h. By dropped I mean the device node /dev/sdb became "unresponsive" and the drive was re-added with another device node (sdj). This is the kernel message: mptbase: ioc0: LogInfo(0x31110d00): Originator={PL}, Code={Reset}, SubCode(0x0d00) mptbase: ioc0: LogInfo(0x31110d00): Originator={PL}, Code={Reset}, SubCode(0x0d00) mptbase: ioc0: LogInfo(0x31170000): Originator={PL}, Code={IO Device Missing Delay Retry}, SubCode(0x0000) mptbase: ioc0: LogInfo(0x31130000): Originator={PL}, Code={IO Not Yet Executed}, SubCode(0x0000) sd 1:0:0:0: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdb, sector 330342400 sd 1:0:0:0: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdb, sector 330342400 Buffer I/O error on device sdb, logical block 41292800 Buffer I/O error on device sdb, logical block 41292801 Buffer I/O error on device sdb, logical block 41292802 Buffer I/O error on device sdb, logical block 41292803 Buffer I/O error on device sdb, logical block 41292804 Buffer I/O error on device sdb, logical block 41292805 Buffer I/O error on device sdb, logical block 41292806 Buffer I/O error on device sdb, logical block 41292807 Buffer I/O error on device sdb, logical block 41292808 Buffer I/O error on device sdb, logical block 41292809 sd 1:0:0:0: SCSI error: return code = 0x00010000 end_request: I/O error, dev sdb, sector 330342400 lots more of these, until finally: mptbase: ioc0: LogInfo(0x31111000): Originator={PL}, Code={Reset}, SubCode(0x1000) mptbase: ioc0: LogInfo(0x31111000): Originator={PL}, Code={Reset}, SubCode(0x1000) mptsas: ioc0: attaching sata device, channel 0, id 13, phy 0 scsi 1:0:4:0: Direct-Access ATA ST3750640AS E PQ: 0 ANSI: 5 SCSI device sdj: 1465149168 512-byte hdwr sectors (750156 MB) sdj: Write Protect is off SCSI device sdj: write cache: enabled, read cache: enabled, doesn't support DPO or FUA SCSI device sdj: 1465149168 512-byte hdwr sectors (750156 MB) sdj: Write Protect is off SCSI device sdj: write cache: enabled, read cache: enabled, doesn't support DPO or FUA sdj: unknown partition table sd 1:0:4:0: Attached scsi disk sdj sd 1:0:4:0: Attached scsi generic sg1 type 0 Is it a bad drive, a bad controller, or both? Or a driver bug? Thanks for any hints. Phil. - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html