Hullo I am having the same problem.
I built a kernel from the sources here: http://people.debian.org/~nobse/kernel/linux-2.6/i386/ The problem is less severe but still a showstopper for production use. I too am looking forward to getting this fixed. When I user dd to fill one of the partitions I still triggered the error. I was able to fill disk without errors once. Then when I was removing the test file it triggered. It's a 10GB file. Here is the log: Jan 8 13:35:49 raidserver kernel: process `syslogd' is using obsolete setsockopt SO_BSDCOMPAT Jan 8 13:37:02 raidserver kernel: ata2.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen Jan 8 13:37:02 raidserver kernel: ata2.00: tag 0 cmd 0x61 Emask 0x4 stat 0x40 err 0x0 (timeout) Jan 8 13:37:02 raidserver kernel: ata2: soft resetting port Jan 8 13:37:02 raidserver kernel: ata2: softreset failed (1st FIS failed) Jan 8 13:37:02 raidserver kernel: ata2: softreset failed, retrying in 5 secs Jan 8 13:37:02 raidserver kernel: ata2: hard resetting port Jan 8 13:37:02 raidserver kernel: ata2: port is slow to respond, please be patient Jan 8 13:37:02 raidserver kernel: ata2: port failed to respond (30 secs) Jan 8 13:37:02 raidserver kernel: ata2: COMRESET failed (device not ready) Jan 8 13:37:02 raidserver kernel: ata2: hardreset failed, retrying in 5 secs Jan 8 13:37:02 raidserver kernel: ata2: hard resetting port Jan 8 13:37:02 raidserver kernel: ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jan 8 13:37:02 raidserver kernel: ata2.00: configured for UDMA/133 Jan 8 13:37:02 raidserver kernel: ata2: EH complete Jan 8 13:37:02 raidserver kernel: SCSI device sdc: 156301488 512-byte hdwr sectors (80026 MB) Jan 8 13:37:02 raidserver kernel: sdc: Write Protect is off Jan 8 13:37:02 raidserver kernel: sdc: Mode Sense: 00 3a 00 00 Jan 8 13:37:02 raidserver kernel: SCSI device sdc: drive cache: write back Jan 8 13:54:07 raidserver kernel: ata2.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen Jan 8 13:54:07 raidserver kernel: ata2.00: tag 0 cmd 0x61 Emask 0x4 stat 0x40 err 0x0 (timeout) Jan 8 13:54:07 raidserver kernel: ata2: soft resetting port Jan 8 13:54:07 raidserver kernel: ata2: softreset failed (1st FIS failed) Jan 8 13:54:07 raidserver kernel: ata2: softreset failed, retrying in 5 secs Jan 8 13:54:07 raidserver kernel: ata2: hard resetting port Jan 8 13:54:07 raidserver kernel: ata2: port is slow to respond, please be patient Jan 8 13:54:07 raidserver kernel: ata2: port failed to respond (30 secs) Jan 8 13:54:07 raidserver kernel: ata2: COMRESET failed (device not ready) Jan 8 13:54:07 raidserver kernel: ata2: hardreset failed, retrying in 5 secs Jan 8 13:54:07 raidserver kernel: ata2: hard resetting port Jan 8 13:54:07 raidserver kernel: ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jan 8 13:54:07 raidserver kernel: ata2.00: configured for UDMA/133 Jan 8 13:54:07 raidserver kernel: ata2: EH complete Jan 8 13:54:07 raidserver kernel: SCSI device sdc: 156301488 512-byte hdwr sectors (80026 MB) Jan 8 13:54:07 raidserver kernel: sdc: Write Protect is off Jan 8 13:54:07 raidserver kernel: sdc: Mode Sense: 00 3a 00 00 Jan 8 13:54:07 raidserver kernel: SCSI device sdc: drive cache: write back Jan 8 13:54:56 raidserver kernel: ata2.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen Jan 8 13:54:59 raidserver kernel: ata2.00: tag 0 cmd 0x61 Emask 0x4 stat 0x40 err 0x0 (timeout) Jan 8 13:55:35 raidserver kernel: ata2: soft resetting port Jan 8 13:55:35 raidserver kernel: ata2: softreset failed (1st FIS failed) Jan 8 13:55:35 raidserver kernel: ata2: softreset failed, retrying in 5 secs Jan 8 13:55:35 raidserver kernel: ata2: hard resetting port Jan 8 13:55:35 raidserver kernel: ata2: port is slow to respond, please be patient Jan 8 13:55:35 raidserver kernel: ata2: port failed to respond (30 secs) Jan 8 13:55:35 raidserver kernel: ata2: COMRESET failed (device not ready) Jan 8 13:55:35 raidserver kernel: ata2: hardreset failed, retrying in 5 secs Jan 8 13:55:35 raidserver kernel: ata2: hard resetting port Jan 8 13:55:35 raidserver kernel: ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jan 8 13:55:35 raidserver kernel: ata2.00: configured for UDMA/133 Jan 8 13:55:35 raidserver kernel: ata2: EH complete Jan 8 13:55:35 raidserver kernel: SCSI device sdc: 156301488 512-byte hdwr sectors (80026 MB) Jan 8 13:55:35 raidserver kernel: sdc: Write Protect is off Jan 8 13:55:35 raidserver kernel: sdc: Mode Sense: 00 3a 00 00 Jan 8 13:55:35 raidserver kernel: SCSI device sdc: drive cache: write back Jan 8 13:59:36 raidserver kernel: ata1.00: exception Emask 0x0 SAct 0x1 SErr 0x0 action 0x2 frozen Jan 8 13:59:36 raidserver kernel: ata1.00: tag 0 cmd 0x61 Emask 0x4 stat 0x40 err 0x0 (timeout) Jan 8 14:00:18 raidserver kernel: ata1: soft resetting port Jan 8 14:00:18 raidserver kernel: ata1: softreset failed (1st FIS failed) Jan 8 14:00:18 raidserver kernel: ata1: softreset failed, retrying in 5 secs Jan 8 14:00:18 raidserver kernel: ata1: hard resetting port Jan 8 14:00:18 raidserver kernel: ata1: port is slow to respond, please be patient Jan 8 14:00:18 raidserver kernel: ata1: port failed to respond (30 secs) Jan 8 14:00:18 raidserver kernel: ata1: COMRESET failed (device not ready) Jan 8 14:00:18 raidserver kernel: ata1: hardreset failed, retrying in 5 secs Jan 8 14:00:18 raidserver kernel: ata1: hard resetting port Jan 8 14:00:18 raidserver kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jan 8 14:00:18 raidserver kernel: ata1.00: configured for UDMA/133 Jan 8 14:00:18 raidserver kernel: ata1: EH complete Jan 8 14:00:18 raidserver kernel: SCSI device sdb: 156301488 512-byte hdwr sectors (80026 MB) Jan 8 14:00:18 raidserver kernel: sdb: Write Protect is off Jan 8 14:00:18 raidserver kernel: sdb: Mode Sense: 00 3a 00 00 Jan 8 14:00:18 raidserver kernel: SCSI device sdb: drive cache: write back Here is the AHCI driver initialization phase: Jan 8 13:35:49 raidserver kernel: libata version 2.00 loaded. Jan 8 13:35:49 raidserver kernel: ahci 0000:00:1f.2: version 2.0 Jan 8 13:35:49 raidserver kernel: ACPI: PCI Interrupt 0000:00:1f.2[B] -> GSI 19 (level, low) -> IRQ 193 Jan 8 13:35:49 raidserver kernel: PCI: Setting latency timer of device 0000:00:1f.2 to 64 Jan 8 13:35:49 raidserver kernel: ahci 0000:00:1f.2: AHCI 0001.0000 32 slots 4 ports 1.5 Gbps 0xf impl SATA mode Jan 8 13:35:49 raidserver kernel: ahci 0000:00:1f.2: flags: 64bit ncq pm led slum part Jan 8 13:35:49 raidserver kernel: ata1: SATA max UDMA/133 cmd 0xF8804100 ctl 0x0 bmdma 0x0 irq 193 Jan 8 13:35:49 raidserver kernel: ata2: SATA max UDMA/133 cmd 0xF8804180 ctl 0x0 bmdma 0x0 irq 193 Jan 8 13:35:49 raidserver kernel: ata3: SATA max UDMA/133 cmd 0xF8804200 ctl 0x0 bmdma 0x0 irq 193 Jan 8 13:35:49 raidserver kernel: ata4: SATA max UDMA/133 cmd 0xF8804280 ctl 0x0 bmdma 0x0 irq 193 Jan 8 13:35:49 raidserver kernel: scsi1 : ahci Jan 8 13:35:49 raidserver kernel: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jan 8 13:35:49 raidserver kernel: ata1.00: ATA-6, max UDMA/133, 156301488 sectors: LBA48 NCQ (depth 31/32) Jan 8 13:35:49 raidserver kernel: ata1.00: ata1: dev 0 multi count 16 Jan 8 13:35:49 raidserver kernel: ata1.00: configured for UDMA/133 Jan 8 13:35:49 raidserver kernel: scsi2 : ahci Jan 8 13:35:49 raidserver kernel: ata2: SATA link up 1.5 Gbps (SStatus 113 SControl 300) Jan 8 13:35:49 raidserver kernel: ata2.00: ATA-6, max UDMA/133, 156301488 sectors: LBA48 NCQ (depth 31/32) Jan 8 13:35:49 raidserver kernel: ata2.00: ata2: dev 0 multi count 16 Jan 8 13:35:49 raidserver kernel: ata2.00: configured for UDMA/133 Jan 8 13:35:49 raidserver kernel: scsi3 : ahci Jan 8 13:35:49 raidserver kernel: ata3: SATA link down (SStatus 0 SControl 300) Jan 8 13:35:49 raidserver kernel: scsi4 : ahci Jan 8 13:35:49 raidserver kernel: ata4: SATA link down (SStatus 0 SControl 300) Jan 8 13:35:49 raidserver kernel: Vendor: ATA Model: ST380817AS Rev: 3.42 Jan 8 13:35:49 raidserver kernel: Type: Direct-Access ANSI SCSI revision: 05 Jan 8 13:35:49 raidserver kernel: Vendor: ATA Model: ST380817AS Rev: 3.42 Jan 8 13:35:49 raidserver kernel: Type: Direct-Access ANSI SCSI revision: 05 Jan 8 13:35:49 raidserver kernel: sda : very big device. try to use READ CAPACITY(16). Jan 8 13:35:49 raidserver kernel: SCSI device sda: 5859164160 512-byte hdwr sectors (2999892 MB) lspci: 0000:00:00.0 Host bridge: Intel Corp. Server Memory Controller Hub (rev 05) 0000:00:01.0 PCI bridge: Intel Corp. Server Memory Controller Hub PCI Express Port (rev 05) 0000:00:02.0 VGA compatible controller: Intel Corp. Graphics Controller (rev 05) 0000:00:1c.0 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 (rev 03) 0000:00:1c.1 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 (rev 03) 0000:00:1c.2 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 3 (rev 03) 0000:00:1c.3 PCI bridge: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 4 (rev 03) 0000:00:1d.0 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 (rev 03) 0000:00:1d.1 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 (rev 03) 0000:00:1d.2 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 (rev 03) 0000:00:1d.3 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 (rev 03) 0000:00:1d.7 USB Controller: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller (rev 03) 0000:00:1e.0 PCI bridge: Intel Corp. 82801 PCI Bridge (rev d3) 0000:00:1f.0 ISA bridge: Intel Corp. 82801FB/FR (ICH6/ICH6R) LPC Interface Bridge (rev 03) 0000:00:1f.1 IDE interface: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) IDE Controller (rev 03) 0000:00:1f.2 0106: Intel Corp. 82801FR/FRW (ICH6R/ICH6RW) SATA Controller (rev 03) 0000:00:1f.3 SMBus: Intel Corp. 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller (rev 03) 0000:01:00.0 PCI bridge: Intel Corp. PCI Bridge Hub (rev 09) 0000:01:00.1 PIC: Intel Corp. PCI Bridge Hub I/OxAPIC Interrupt Controller A (rev 09) 0000:02:03.0 RAID bus controller: 3ware Inc 3ware ATA-RAID 0000:04:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 01) 0000:05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 Gigabit Ethernet PCI Express (rev 01) 0000:07:01.0 FireWire (IEEE 1394): NEC Corporation IEEE 1394 Host Controller (rev 01) -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]