Hi, I run raid1 on a debian etch server. If I do "halt" = "shutdown -h now" I have the following output from my system on shutdown. Moreover, the sytem takes an extremely long time to shut down, with all the timeouts :). output below: " md stopping all md devices Synchronizing SCSI cache from disk sdg: ata8: command timeout ata8: no sense translation for status:0x40 ata8: translated ATA status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} ata8: command timeout ata8: no sense translation for Status:0x40 ata8: translated ATA Status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} ata8: no sense translation for Status:0x40 ata8: translated ATA Status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} Failed status=1, message=00, host=0, drive=08 <6>sd: Current: sense key: Aborted Command Additional sense no additional sense information Synchronizing SCSI cache from disk sdf: ata8: command timeout ata8: no sense translation for status:0x40 ata8: translated ATA status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} ata8: command timeout ata8: no sense translation for Status:0x40 ata8: translated ATA Status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} ata8: no sense translation for Status:0x40 ata8: translated ATA Status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} Failed status=1, message=00, host=0, drive=08 <6>sd: Current: sense key: Aborted Command Additional sense no additional sense information Synchronizing SCSI cache from disk sde: ata8: command timeout ata8: no sense translation for status:0x40 ata8: translated ATA status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} ata8: command timeout ata8: no sense translation for Status:0x40 ata8: translated ATA Status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} ata8: no sense translation for Status:0x40 ata8: translated ATA Status/error 0x40/00 to SCSI SK/ASC/ASCQ 0xb/00/00 ata8: Status =0x40{DriveReady} Failed status=1, message=00, host=0, drive=08 <6>sd: Current: sense key: Aborted Command Additional sense no additional sense information etc. " While if I do "reboot" = "shutdown -r now" there is no problem :). ************************* I have previously been using Sata devices for raid-1 for 2 years using Debian Sarge. I have just moved over to Debian Etch for a production server. For my data storage I am using 2 Promise 4 port SATA 150 TX4 cards, which have worked well with kernel 2.6.12 in past. I have 7 SATA data hard drives (either 320G or 500G WD SATA drives attached to the server): I am using 5 drives as degraded individual Raid-1's on single drives, and one full mirrored Raid-1 for a pair of drives. (these are /dev/sda1 through /dev/sdg1). (I keep legacy data online on the degraded raid1 and new data is on the mirrored Raid1). All 7 drives are attached to two "Promise 4 Port 150 TX4 cards". The system drive is on a separate Pata IDE connector. I blacklisted the kernel module for the sata_via module that controls the built in motherboard sata controller. I am using stock debian 2.6.18-5-486 kernel. I am running stock Debian mdadm package 2.5.6-9. The system seems to work reasonably otherwise. How do I preven these error messages on shutdown? Note: If I do "reboot" = "shutdown -r now" all is fine. (Note: I don't want to confuse things, however the following is also interesting. If I put both "Promise 4 port SATA 150 Tx4" cards and "Promise 4 port Sata 300 TX4" cards on one system then in addition to the above errors I also get a kernel oops during the same part of the shutdown sequence. Note that the system seems to function fine untill I do "shutdown -h now" and there is no problem with "shutdown -r now". Very strange! Thank you, Mitchell Laks - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html