SATA and Software RAID on 82801EB (ICH5)

SATA and Software RAID on 82801EB (ICH5)

[Matthieu Foillard]

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 ?

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
...


-- 
Matthieu Foillard <m.foillard@iota-online.com>
tel : 0140719720 - mob : 0686574170
pgp : 0x1609654F

Re: SATA and Software RAID on 82801EB (ICH5)

[Mikael Eriksson]

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
> ..
> 
>