Hi Neil, Looks like the log file was simply too big. Here are the initial and ending lines: Cheers, Gavin output of: grep -i ATA /var/log/messages Apr 4 00:46:18 saturn kernel: [58150.946089] pata_atiixp 0000:00:14.1: PCI INT A disabled Apr 4 00:46:19 saturn kernel: [58151.620996] pata_atiixp 0000:00:14.1: PCI INT A -> GSI 16 (level, low) -> IRQ 16 Apr 4 00:46:19 saturn kernel: [58151.776364] ata6.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out Apr 4 00:46:19 saturn kernel: [58151.776367] ata6.00: ACPI cmd ef/03:46:00:00:00:a0 (SET FEATURES) filtered out Apr 4 00:46:19 saturn kernel: [58151.776370] ata6.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out Apr 4 00:46:19 saturn kernel: [58151.792475] ata5.00: ACPI cmd ef/03:0c:00:00:00:a0 (SET FEATURES) filtered out Apr 4 00:46:19 saturn kernel: [58151.792478] ata5.00: ACPI cmd ef/03:42:00:00:00:a0 (SET FEATURES) filtered out Apr 4 00:46:19 saturn kernel: [58151.792481] ata5.00: ACPI cmd f5/00:00:00:00:00:a0 (SECURITY FREEZE LOCK) filtered out Apr 4 00:46:19 saturn kernel: [58151.814455] ata5.00: configured for UDMA/33 Apr 4 00:46:19 saturn kernel: [58151.850339] ata6.00: configured for UDMA/100 Apr 4 00:46:19 saturn kernel: [58151.864031] ata3: softreset failed (device not ready) Apr 4 00:46:19 saturn kernel: [58151.864035] ata4: softreset failed (device not ready) Apr 4 00:46:19 saturn kernel: [58151.864038] ata3: applying SB600 PMP SRST workaround and retrying Apr 4 00:46:19 saturn kernel: [58151.864040] ata4: applying SB600 PMP SRST workaround and retrying Apr 4 00:46:19 saturn kernel: [58151.864059] ata2: softreset failed (device not ready) Apr 4 00:46:19 saturn kernel: [58151.864061] ata1: softreset failed (device not ready) Apr 4 00:46:19 saturn kernel: [58151.864063] ata2: applying SB600 PMP SRST workaround and retrying Apr 4 00:46:19 saturn kernel: [58151.864065] ata1: applying SB600 PMP SRST workaround and retrying Apr 4 00:46:19 saturn kernel: [58152.019042] ata2: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Apr 4 00:46:19 saturn kernel: [58152.019046] ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Apr 4 00:46:19 saturn kernel: [58152.019070] ata3: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Apr 4 00:46:19 saturn kernel: [58152.019079] ata1: SATA link up 3.0 Gbps (SStatus 123 SControl 300) Apr 4 00:46:19 saturn kernel: [58152.021363] ata3.00: configured for UDMA/133 Apr 4 00:46:19 saturn kernel: [58152.085139] ata4.00: configured for UDMA/133 Apr 4 00:46:19 saturn kernel: [58152.085152] ata1.00: configured for UDMA/133 Apr 4 00:46:19 saturn kernel: [58152.085165] ata2.00: configured for UDMA/133 [...] Apr 7 14:41:58 saturn kernel: [231943.624749] ata3: hard resetting link Apr 7 14:42:05 saturn kernel: [231950.625059] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310) Apr 7 14:42:05 saturn kernel: [231950.635608] ata3.00: configured for UDMA/33 Apr 7 14:42:05 saturn kernel: [231950.635617] ata3: EH complete Apr 7 14:42:05 saturn kernel: [231950.654531] ata3.00: exception Emask 0x50 SAct 0x1 SErr 0x90a00 action 0xe frozen Apr 7 14:42:05 saturn kernel: [231950.654535] ata3.00: irq_stat 0x01400000, PHY RDY changed Apr 7 14:42:05 saturn kernel: [231950.654538] ata3: SError: { Persist HostInt PHYRdyChg 10B8B } Apr 7 14:42:05 saturn kernel: [231950.654541] ata3.00: failed command: READ FPDMA QUEUED Apr 7 14:42:05 saturn kernel: [231950.654546] ata3.00: cmd 60/80:00:f0:21:3b/00:00:1c:00:00/40 tag 0 ncq 65536 in Apr 7 14:42:05 saturn kernel: [231950.654547] res 40/00:00:f0:21:3b/00:00:1c:00:00/40 Emask 0x50 (ATA bus error) Apr 7 14:42:05 saturn kernel: [231950.654550] ata3.00: status: { DRDY } Apr 7 14:42:05 saturn kernel: [231950.654554] ata3: hard resetting link Apr 7 14:42:12 saturn kernel: [231957.654285] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310) Apr 7 14:42:12 saturn kernel: [231957.666115] ata3.00: configured for UDMA/33 Apr 7 14:42:12 saturn kernel: [231957.666123] ata3: EH complete Apr 7 14:42:12 saturn kernel: [231957.756013] ata3.00: exception Emask 0x50 SAct 0x1 SErr 0x90a00 action 0xe frozen Apr 7 14:42:12 saturn kernel: [231957.756016] ata3.00: irq_stat 0x01400000, PHY RDY changed Apr 7 14:42:12 saturn kernel: [231957.756020] ata3: SError: { Persist HostInt PHYRdyChg 10B8B } Apr 7 14:42:12 saturn kernel: [231957.756023] ata3.00: failed command: READ FPDMA QUEUED Apr 7 14:42:12 saturn kernel: [231957.756028] ata3.00: cmd 60/80:00:f0:24:3b/00:00:1c:00:00/40 tag 0 ncq 65536 in Apr 7 14:42:12 saturn kernel: [231957.756029] res 40/00:00:f0:24:3b/00:00:1c:00:00/40 Emask 0x50 (ATA bus error) Apr 7 14:42:12 saturn kernel: [231957.756032] ata3.00: status: { DRDY } Apr 7 14:42:12 saturn kernel: [231957.756037] ata3: hard resetting link Apr 7 14:42:16 saturn kernel: [231961.389026] ata3: softreset failed (device not ready) Apr 7 14:42:16 saturn kernel: [231961.389032] ata3: applying SB600 PMP SRST workaround and retrying Apr 7 14:42:16 saturn kernel: [231961.544030] ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 310) Apr 7 14:42:16 saturn kernel: [231961.546323] ata3.00: configured for UDMA/33 Apr 7 14:42:16 saturn kernel: [231961.546331] ata3: EH complete -- All Adults share the Responsibility to help Raise Today's Children, for they are Tomorrow's Society! --- On Fri, 8/4/11, Gavin Flower <gavinflower@xxxxxxxxx> wrote: > From: Gavin Flower <gavinflower@xxxxxxxxx> > Subject: RAID6 data-check took almost 2 hours, clicking sounds, system unresponsive > To: neilb@xxxxxxx > Cc: linux-raid@xxxxxxxxxxxxxxx > Date: Friday, 8 April, 2011, 13:32 [...] > My original email may have been eaten: as it did not appear > on the list, nor did I get an error message back. So > perhaps there was a problem with the attached files. > > I will resend the attachments one at a time in separate > emails. [...] -- 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