Jeff, I have encountered a problem with my SATA controller and would like to report the bug - I'm not sure if you are the person to contact but here goes: 2.6.16.1 from kernel.org Syba SD-SATA150R PCI (Silicon Image 3112A flashed to 4.2.76) Maxtor 6L250M0 Rev:BACE I have it running as part of a degraded RAID 5 (I was planning to transition to a full RAID 5 but I guess not with the errors I'm getting =( When I was copying from a regular device (hdc3) to the degraded array md2 (composed of hda3 and sda3) ata1 would start to report errors. I keep getting errors reporting the same sectors. I was wondering if this could possibly be firmware related? Let me know if I can provide any additional information to help solve this bug. Thanks for the help! Wesley dmesg: libata version 1.20 loaded. sata_sil 0000:00:09.0: version 0.9 ACPI: PCI Interrupt 0000:00:09.0[A] -> GSI 17 (level, low) -> IRQ 16 ata1: SATA max UDMA/100 cmd 0xCC802E80 ctl 0xCC802E8A bmdma 0xCC802E00 irq 16 ata2: SATA max UDMA/100 cmd 0xCC802EC0 ctl 0xCC802ECA bmdma 0xCC802E08 irq 16 ata1: SATA link up 1.5 Gbps (SStatus 113) ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4673 85:7c69 86:3e01 87:4663 88:407f ata1: dev 0 ATA-7, max UDMA/133, 490234752 sectors: LBA48 ata1: dev 0 configured for UDMA/100 scsi0 : sata_sil ata2: SATA link down (SStatus 0) scsi1 : sata_sil Vendor: ATA Model: Maxtor 6L250M0 Rev: BACE Type: Direct-Access ANSI SCSI revision: 05 SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back SCSI device sda: 490234752 512-byte hdwr sectors (251000 MB) sda: Write Protect is off sda: Mode Sense: 00 3a 00 00 SCSI device sda: drive cache: write back sda: sda1 sda2 sda3 sd 0:0:0:0: Attached scsi disk sda ERROR WHILE rsync -avx / /mnt/: ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } sd 0:0:0:0: SCSI error: return code = 0x8000002 sda: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sda, sector 63268998 raid5: read error not correctable. raid5: Disk failure on sda3, disabling device. Operation continuing on 1 devices ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } sd 0:0:0:0: SCSI error: return code = 0x8000002 sda: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sda, sector 63269006 raid5: read error not correctable. ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } sd 0:0:0:0: SCSI error: return code = 0x8000002 sda: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sda, sector 63269014 raid5: read error not correctable. ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } ata1: no sense translation for status: 0x51 ata1: translated ATA stat/err 0x51/00 to SCSI SK/ASC/ASCQ 0x3/11/04 ata1: status=0x51 { DriveReady SeekComplete Error } sd 0:0:0:0: SCSI error: return code = 0x8000002 sda: Current: sense key: Medium Error Additional sense: Unrecovered read error - auto reallocate failed end_request: I/O error, dev sda, sector 63269022 raid5: read error not correctable. I/O error in filesystem ("md2") meta-data dev md2 block 0x1cfaa598 ("xlog_iodone") error 5 buf count 4096 xfs_force_shutdown(md2,0x2) called from line 959 of file fs/xfs/xfs_log.c. Return address = 0xc0207a0c Filesystem "md2": Log I/O Error Detected. Shutting down filesystem: md2 Please umount the filesystem, and rectify the problem(s) RAID5 conf printout: --- rd:3 wd:1 fd:2 disk 0, o:0, dev:sda3 disk 1, o:1, dev:hda3 I/O error in filesystem ("md2") meta-data dev md2 block 0x1cfaa580 ("xlog_iodone") error 5 buf count 12288 xfs_force_shutdown(md2,0x2) called from line 959 of file fs/xfs/xfs_log.c. Return address = 0xc0207a0c printk: 2552 messages suppressed. Buffer I/O error on device md2, logical block 14766033 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766034 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766035 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766036 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766037 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766038 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766039 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766040 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766041 lost page write due to I/O error on md2 Buffer I/O error on device md2, logical block 14766042 lost page write due to I/O error on md2 RAID5 conf printout: --- rd:3 wd:1 fd:2 disk 1, o:1, dev:hda3 xfs_force_shutdown(md2,0x1) called from line 338 of file fs/xfs/xfs_rw.c. 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