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    SubjectRe: 2.6.29 regression: ATA bus errors on resume
    On 05/23/2009 11:20 AM, Niel Lambrechts wrote:
    > On 04/09/2009 08:18 PM, Tejun Heo wrote:
    >> Hmm... none of the debugging messages got triggered, so there should
    >> be no noticeable timing change. It seems like you're being lucky for
    >> the time being. Can you please keep testing and report back?
    >
    > Hi Tejun,
    >
    > Just to keep you up informed - this issue is still happening, I've been
    > testing the latest 2.6.30-git kernels the last couple of weeks and just
    > checked my logs after having an unexpected fsck upon system boot - the
    > freeze seems to trigger very infrequently though, since I use s2disk at
    > least twice a day and the error only seems to have happened twice since
    > May 2.

    I notice that if I hibernate with a CD in the drive and then remove it as soon
    as I boot, I get a hard reset on the ata1 bus.

    I'm not sure if this maybe plays a role in triggering the problem at times,
    perhaps it is entirely expected - but vim highlights it in red and to a "normal"
    user that is bad. :)
    Maybe after applying your patch I should play around with this?


    /var/log/warn:
    May 23 11:28:44 linux-7vph kernel: sd 0:0:0:0: [sda] Starting disk
    May 23 11:28:44 linux-7vph kernel: ata2: SATA link up 1.5 Gbps (SStatus 113
    SControl 300)
    May 23 11:28:44 linux-7vph kernel: ata1: SATA link up 1.5 Gbps (SStatus 113
    SControl 300)
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd f5/00:00:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/10:03:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd f5/00:00:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/10:03:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: configured for UDMA/133
    May 23 11:28:44 linux-7vph kernel: ata1: exception Emask 0x10 SAct 0x0 SErr 0x0
    action 0x9 t4
    May 23 11:28:44 linux-7vph kernel: ata1: irq_stat 0x00400040, connection status
    changed
    May 23 11:28:44 linux-7vph kernel: ata1.00: configured for UDMA/133
    May 23 11:28:44 linux-7vph kernel: ata1: EH complete
    May 23 11:28:44 linux-7vph kernel: ata2.00: ACPI cmd e3/00:1f:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata2.00: ACPI cmd e3/00:02:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata2.00: ACPI cmd e3/00:1f:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata2.00: ACPI cmd e3/00:02:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata2.00: configured for UDMA/133
    May 23 11:28:44 linux-7vph kernel: pci 0000:00:02.0: restoring config space at
    offset 0x1 (was 0x900407, writing 0x900403)
    May 23 11:28:44 linux-7vph kernel: pci 0000:00:02.0: setting latency timer to 64
    May 23 11:28:44 linux-7vph kernel: Restarting tasks ... done.
    May 23 11:28:44 linux-7vph kernel: ata2: exception Emask 0x10 SAct 0x0 SErr 0x0
    action 0x9 t4
    May 23 11:28:44 linux-7vph kernel: ata2: irq_stat 0x40000001
    May 23 11:28:44 linux-7vph kernel: ata2.00: configured for UDMA/133
    May 23 11:28:44 linux-7vph kernel: ata2: EH complete
    May 23 11:28:44 linux-7vph kernel: ata1.00: exception Emask 0x10 SAct 0x1 SErr
    0x10000 action 0xe frozen
    May 23 11:28:44 linux-7vph kernel: ata1.00: irq_stat 0x00400008, PHY RDY changed
    May 23 11:28:44 linux-7vph kernel: ata1: SError: { PHYRdyChg }
    May 23 11:28:44 linux-7vph kernel: ata1.00: cmd
    61/08:00:37:5a:f4/00:00:09:00:00/40 tag 0 ncq 4096 out
    May 23 11:28:44 linux-7vph kernel: res
    50/00:08:37:5a:f4/00:00:09:00:00/40 Emask 0x10 (ATA bus error)
    May 23 11:28:44 linux-7vph kernel: ata1.00: status: { DRDY }
    May 23 11:28:44 linux-7vph kernel: ata1: hard resetting link
    May 23 11:28:44 linux-7vph kernel: ata1: SATA link up 1.5 Gbps (SStatus 113
    SControl 300)
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd f5/00:00:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/10:03:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/02:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd f5/00:00:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/5f:00:00:00:00:a0 succeeded
    May 23 11:28:44 linux-7vph kernel: ata1.00: ACPI cmd ef/10:03:00:00:00:a0
    filtered out
    May 23 11:28:44 linux-7vph kernel: ata1.00: configured for UDMA/133
    May 23 11:28:44 linux-7vph kernel: ata1.00: configured for UDMA/133
    May 23 11:28:44 linux-7vph kernel: ata1: EH complete
    Regards,
    Niel


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