Hi A host does not go down. I also tried it with `irqpoll` with the same result. Remaining filesystems read-only ... / ... irq 18: nobody cared (try booting with the "irqpoll" option) Pid: 0, comm: swapper Not tainted 2.6.26-rc8 #2 [<c0141678>] __report_bad_irq+0x2e/0x6f [<c014187f>] note_interrupt+0x1c6/0x21f [<c0140fee>] ? handle_IRQ_event+0x3e/0x46 [<c0141e11>] handle_fasteoi_irq+0x86/0xab [<c0141d8b>] ? handle_fasteoi_irq+0x0/0xab [<c0104c54>] do_IRQ+0xb6/0xe2 [<c0101daf>] ? default_idle+0x0/0x55 [<c0101daf>] ? default_idle+0x0/0x55 [<c010372e>] common_interrupt+0x2e/0x34 [<c0101daf>] ? default_idle+0x0/0x55 [<c0101daf>] ? default_idle+0x0/0x55 [<c0101de4>] ? default_idle+0x35/0x55 [<c0101d7a>] cpu_idle+0x62/0x97 [<c0353270>] rest_init+0x5c/0x5e ======================= handlers: [<c02df1df>] (ata_sff_interrupt+0x0/0xab) Disabling IRQ #18 atkbd serio0: shutdown i8042 i8042: shutdown sd 3:0:1:0: shutdown sd 3:0:1:0: [sdd] Synchronizing SCSI cache ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata4.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) ata4.00: status: { DRDY } ata4: soft resetting link ata4.00: configured for UDMA/100 ata4: EH complete ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen ata4.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0 res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (timeout) ata4.00: status: { DRDY } ata4: soft resetting link ata4.00: configured for UDMA/100 ata4: EH complete ata4.00: limiting speed to UDMA/66:PIO4 and so on .. Controller is Promise Technology, Inc. PDC20270 (FastTrak100 LP/TX2/TX4) (rev 02) pata_pdc2027x 0000:01:0a.0: PLL input clock 16692 kHz scsi2 : pata_pdc2027x scsi3 : pata_pdc2027x ata3: PATA max UDMA/100 mmio m65536@0xed040000 cmd 0xed0417c0 irq 18 ata4: PATA max UDMA/100 mmio m65536@0xed040000 cmd 0xed0415c0 irq 18 ata3.00: ATA-7: ST3250823A, 3.03, max UDMA/100 ata3.00: 488397168 sectors, multi 16: LBA48 ata3.00: configured for UDMA/100 ata4.01: HPA detected: current 488395055, native 488397168 ata4.01: ATA-7: ST3250824A, 3.AAD, max UDMA/100 ata4.01: 488395055 sectors, multi 16: LBA48 ata4.01: configured for UDMA/100 -- 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