Messages in this thread | | | Date | Tue, 26 Oct 2004 21:50:14 +0000 | From | "J.A. Magallon" <> | Subject | Setting 32bit IO on SATA drives |
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Hi all...
I have a bunch of SATA drives on a RAID-5 setup. I was investigating the usual things on ide disks to optimize performance, with hdparm.
The defalt settings, as they boot:
sata_promise version 1.00 ACPI: PCI interrupt 0000:00:07.0[A] -> GSI 17 (level, low) -> IRQ 177 ata1: SATA max UDMA/133 cmd 0xF0802200 ctl 0xF0802238 bmdma 0x0 irq 177 ... ata1: dev 0 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003 88:407f ata1: dev 0 ATA, max UDMA/133, 490234752 sectors: lba48 ata1: dev 0 configured for UDMA/133
nada:~# lsscsi -l [0:0:0:0] disk ATA Maxtor 7Y250M0 YAR5 /dev/sda state=running queue_depth=1 scsi_level=6 type=0 device_blocked=0 timeout=30
nada:~# hdparm /dev/sda
/dev/sda: HDIO_GET_MULTCOUNT failed: Operation not supported IO_support = 0 (default 16-bit) readonly = 0 (off) readahead = 256 (on) geometry = 30515/255/63, sectors = 251000193024, start = 0
nada:~# hdparm -c /dev/sda
/dev/sda: IO_support = 0 (default 16-bit)
nada:~# hdparm -c1 /dev/sda
/dev/sda: setting 32-bit IO_support flag to 1 HDIO_SET_32BIT failed: Invalid argument IO_support = 0 (default 16-bit)
How can I make 32bit IO active ?
TIA
-- J.A. Magallon <jamagallon()able!es> \ Software is like sex: werewolf!able!es \ It's better when it's free Mandrakelinux release 10.1 (Community) for i586 Linux 2.6.9-jam1 (gcc 3.4.1 (Mandrakelinux 10.1 3.4.1-4mdk)) #4
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