SATA/ADMA TIMEOUTS, dmesg output

Following this post is output from Linux kernel 2.6.21 showing ADMA timeouts.

2.6.21 has improved the situation over earlier kernels, but the problems do still occur.

nforce4 chipset, Seagate Barracuda SATA drives.

This is meant mainly as an additional data point in case it helps someone debug the problem.

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[192487.538000] SCSI device sdb: write cache: enabled, read cache: enabled, does
n't support DPO or FUA
[211093.118000] ata4: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0
x1501000 status 0x400 next cpb count 0x0 next cpb idx 0x0
[211093.118000] ata4: CPB 0: ctl_flags 0x9, resp_flags 0x0
[211093.118000] ata4: timeout waiting for ADMA IDLE, stat=0x400
[211093.118000] ata4: timeout waiting for ADMA LEGACY, stat=0x400
[211093.118000] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[211093.118000] ata4.00: cmd e7/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 d
ata 0
[211093.118000]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (time
out)
[211093.421000] ata4: soft resetting port
[211093.626000] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[211093.632000] ata4.00: configured for UDMA/133
[211093.632000] ata4: EH complete
[211093.632000] SCSI device sdb: 156301488 512-byte hdwr sectors (80026 MB)
[211093.632000] sdb: Write Protect is off
[211093.632000] sdb: Mode Sense: 00 3a 00 00
[211093.632000] SCSI device sdb: write cache: enabled, read cache: enabled, does
n't support DPO or FUA
[221976.072000] ata4: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0
x1501000 status 0x400 next cpb count 0x0 next cpb idx 0x0
[221976.072000] ata4: CPB 0: ctl_flags 0x9, resp_flags 0x0
[221976.072000] ata4: timeout waiting for ADMA IDLE, stat=0x400
[221976.072000] ata4: timeout waiting for ADMA LEGACY, stat=0x400
[221976.072000] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[221976.072000] ata4.00: cmd e7/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 d
ata 0
[221976.072000]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (time
out)
[221976.375000] ata4: soft resetting port
[221976.580000] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[221976.586000] ata4.00: configured for UDMA/133
[221976.586000] ata4: EH complete
[221976.587000] SCSI device sdb: 156301488 512-byte hdwr sectors (80026 MB)
[221976.587000] sdb: Write Protect is off
[221976.587000] sdb: Mode Sense: 00 3a 00 00
[221976.587000] SCSI device sdb: write cache: enabled, read cache: enabled, does
n't support DPO or FUA
[222045.513000] ata4: EH in ADMA mode, notifier 0x0 notifier_error 0x0 gen_ctl 0
x1501000 status 0x400 next cpb count 0x0 next cpb idx 0x0
[222045.513000] ata4: CPB 0: ctl_flags 0x9, resp_flags 0x0
[222045.513000] ata4: timeout waiting for ADMA IDLE, stat=0x400
[222045.513000] ata4: timeout waiting for ADMA LEGACY, stat=0x400
[222045.513000] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
[222045.513000] ata4.00: cmd e7/00:00:00:00:00/00:00:00:00:00/a0 tag 0 cdb 0x0 d
ata 0
[222045.513000]          res 40/00:00:00:00:00/00:00:00:00:00/00 Emask 0x4 (time
out)
[222045.816000] ata4: soft resetting port
[222046.021000] ata4: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
[222046.027000] ata4.00: configured for UDMA/133
[222046.027000] ata4: EH complete
[222046.027000] SCSI device sdb: 156301488 512-byte hdwr sectors (80026 MB)
[222046.027000] sdb: Write Protect is off
[222046.027000] sdb: Mode Sense: 00 3a 00 00
[222046.027000] SCSI device sdb: write cache: enabled, read cache: enabled, does

n't support DPO or FUA

shannon           | An Irishman is never drunk as long as he can hold onto
                  | one blade of grass and not fall off the face of the earth.

Does setting 'adma' module option to zero fix things?

Jeff