Am running a Redhat FC6 machine with kernel 2.6.19-1.2911.6.5 and
wondering if there is not yet support for the NCQ feature of sata_nv on
boards using the NVIDIA MCP55 chipset.
ata4: SATA link up 3.0 Gbps (SStatus 123 SControl 300)
ata4.00: ATA-7, max UDMA/133, 976773168 sectors: LBA48 NCQ (depth 0/32)
ata4.00: ata4: dev 0 multi count 1
ata4.00: configured for UDMA/133
scsi 2:0:0:0: Direct-Access ATA WDC WD5000YS-01M 09.0 PQ: 0 ANSI: 5
SCSI device sdc: 976773168 512-byte hdwr sectors (500108 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
SCSI device sdc: drive cache: write back
SCSI device sdc: 976773168 512-byte hdwr sectors (500108 MB)
sdc: Write Protect is off
sdc: Mode Sense: 00 3a 00 00
The drive is NCQ capable and when I attempt to:
echo 31 > /sys/block/sdc/device/queue_depth
I get a "permission denied", (as root) and am reluctant to force the
issue, as I understand it should all just work, (depth 31/3), if
everything is OK.
Regards,
Richard
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