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SubjectRe: SATA and Software RAID on 82801EB (ICH5)
Matthieu Foillard wrote:
> Hello list members,
> I'm trying to make software raid working on SATA drives for two days with
> partial success.
> I'm using kernel 2.6.5 with Debian.The server has two 160Go drives and i want
> to make RAID 1 on them. It works partially since the server boot on a raid
> partition w/o problem.
> The problem comes when i try to construct RAID 1 array on big partition (it
> seems to works when partition size is not too big) e.g. /home which is about
> 140 Go. When i mkraid or raidhotadd, it starts to construct the array and
> seems to work for some times but fails after an random amount of time. At
> this moment, disk led shows disks are busy and the system is no more usable
> (but does not panic since i can magic sysrq to reboot).
> I tried to use the "standard" ATA drivers. It works, for sure, but performance
> are really poor. I've also tried to create more little partitions but even
> with a 70Go partition, array construction fails.
> Hope you can help, thanks !
>
> P.S. : Do you think I should use iswraid on 2.4.22 kernel ?

There is a iswraid patch for 2.4.25, I have been using it since it was
posted on lkml without problems.

http://marc.theaimsgroup.com/?l=linux-kernel&m=107733169708896&w=2

>
> here are some informations about hardware :
> # lspci
> ..
> 0000:00:1f.2 IDE interface: Intel Corp. 82801EB (ICH5) Serial ATA 150 Storage
> Controller (rev 02)
>
> # dmesg
> ..
> Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
> ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
> hda: CD-224E, ATAPI CD/DVD-ROM drive
> ide1: I/O resource 0x170-0x177 not free.
> ide1: ports already in use, skipping probe
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
> hda: ATAPI 24X CD-ROM drive, 128kB Cache
> Uniform CD-ROM driver Revision: 3.20
> libata version 1.02 loaded.
> ata_piix version 1.02
> ata_piix: combined mode detected
> ata: 0x1f0 IDE port busy
> PCI: Setting latency timer of device 0000:00:1f.2 to 64
> ata1: SATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0xF008 irq 15
> 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, 320173056 sectors (lba48)
> ata1: dev 1 cfg 49:2f00 82:7c6b 83:7f09 84:4003 85:7c69 86:3e01 87:4003
> 88:407f
> ata1: dev 1 ATA, max UDMA/133, 320173056 sectors (lba48)
> ata1: dev 0 configured for UDMA/133
> ata1: dev 1 configured for UDMA/133
> scsi0 : ata_piix
> Vendor: ATA Model: Maxtor 6Y160M0 Rev: 1.02
> Type: Direct-Access ANSI SCSI revision: 05
> ata1: dev 0 max request 32MB (lba48)
> Vendor: ATA Model: Maxtor 6Y160M0 Rev: 1.02
> Type: Direct-Access ANSI SCSI revision: 05
> ata1: dev 1 max request 32MB (lba48)
> SCSI device sda: 320173056 512-byte hdwr sectors (163929 MB)
> SCSI device sda: drive cache: write through
> sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 >
> Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
> SCSI device sdb: 320173056 512-byte hdwr sectors (163929 MB)
> SCSI device sdb: drive cache: write through
> sdb: sdb1 sdb2 sdb3 sdb4 < sdb5 sdb6 sdb7 >
> Attached scsi disk sdb at scsi0, channel 0, id 1, lun 0
> ..
>
>

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