Hi everybody, it looks like this will be a never ending story... >>> After I got the new PSU and the raid was in full sync without any >>> error for 48h, I thought all problems were gone. Today the sata errors >>> reappeared and whenever the load is high enough I get the following: >>> I exchanged two (probably failing) of the eight harddrives with new ones. All remaining disks have a good smart state and are fully readable when the raid is not active. As long as I mount the filesystem on the raid readonly there wont happen any error, but the moment I mount it rw and try to copy something to the fs on the raid I get the already known timeout. At least I get a little bit desperate now... ata10.00: failed to read SCR 1 (Emask=0x40) ata10.01: failed to read SCR 1 (Emask=0x40) ata10.02: failed to read SCR 1 (Emask=0x40) ata10.03: failed to read SCR 1 (Emask=0x40) ata10.04: failed to read SCR 1 (Emask=0x40) ata10.05: failed to read SCR 1 (Emask=0x40) ata10.00: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen ata10.01: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen ata10.01: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 1 cdb 0x0 data 0 res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) ata10.01: status: { DRDY } ata10.02: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen ata10.03: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen ata10.04: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen ata10.05: exception Emask 0x100 SAct 0x0 SErr 0x0 action 0x6 frozen ata10.15: hard resetting link ata10.15: SATA link up 3.0 Gbps (SStatus 123 SControl 0) ata10.00: hard resetting link ata10.00: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata10.01: hard resetting link ata10.01: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata10.02: hard resetting link ata10.02: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata10.03: hard resetting link ata10.03: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata10.04: hard resetting link ata10.04: SATA link up 3.0 Gbps (SStatus 123 SControl 300) ata10.05: hard resetting link ata10.05: SATA link up 1.5 Gbps (SStatus 113 SControl 300) ata10.00: configured for UDMA/100 ata10.01: configured for UDMA/100 ata10.03: configured for UDMA/100 ata10.04: configured for UDMA/100 ata10: EH complete sd 9:0:0:0: [sdl] 976773168 512-byte hardware sectors (500108 MB) sd 9:0:0:0: [sdl] Write Protect is off sd 9:0:0:0: [sdl] Mode Sense: 00 3a 00 00 sd 9:0:0:0: [sdl] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 9:1:0:0: [sdm] 976773168 512-byte hardware sectors (500108 MB) sd 9:1:0:0: [sdm] Write Protect is off sd 9:1:0:0: [sdm] Mode Sense: 00 3a 00 00 sd 9:1:0:0: [sdm] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 9:2:0:0: [sdn] 976773168 512-byte hardware sectors (500108 MB) sd 9:2:0:0: [sdn] Write Protect is off sd 9:2:0:0: [sdn] Mode Sense: 00 3a 00 00 sd 9:2:0:0: [sdn] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 9:3:0:0: [sdo] 976773168 512-byte hardware sectors (500108 MB) sd 9:3:0:0: [sdo] Write Protect is off sd 9:3:0:0: [sdo] Mode Sense: 00 3a 00 00 sd 9:3:0:0: [sdo] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sd 9:4:0:0: [sdp] 976773168 512-byte hardware sectors (500108 MB) sd 9:4:0:0: [sdp] Write Protect is off sd 9:4:0:0: [sdp] Mode Sense: 00 3a 00 00 sd 9:4:0:0: [sdp] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA - To unsubscribe from this list: 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