From: Andy Smith <andy@lug.org.uk>
To: Molle Bestefich <molle.bestefich@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: Re: Checking the sanity of SATA disks
Date: Tue, 4 Oct 2005 14:56:08 +0000 [thread overview]
Message-ID: <20051004145608.GL6594@strugglers.net> (raw)
In-Reply-To: <62b0912f0510040742v3d0983b2mf5b93a17e8ed8bba@mail.gmail.com>
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On Tue, Oct 04, 2005 at 02:42:58PM +0000, Molle Bestefich wrote:
> Andy Smith wrote:
> > I tried simply doing a
> >
> > dd if=/dev/sd[abcd] of=/dev/null
> >
> > To check each disk in a very unsubtle fashion, but it drives the
> > load average on the machine way way up (like to 20+)
>
> Checked that the disks are using DMA transfers (use 'hdparm')?
$ sudo hdparm /dev/sda
/dev/sda:
HDIO_GET_MULTCOUNT failed: Inappropriate ioctl for device
IO_support = 0 (default 16-bit)
readonly = 0 (off)
readahead = 256 (on)
geometry = 14946/255/63, sectors = 122942324736, start = 0
$ sudo hdparm -d /dev/sda
/dev/sda:
Well that doesn't look right.
From dmesg:
ata1: SATA max UDMA/133 cmd 0x9E0 ctl 0xBE2 bmdma 0xDB00 irq 11
ata2: SATA max UDMA/133 cmd 0x960 ctl 0xB62 bmdma 0xDB08 irq 11
ata1: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 88:407f
ata1: dev 0 ATA, max UDMA/133, 240121728 sectors:
ata1: dev 0 configured for UDMA/133
ata2: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 88:407f
ata2: dev 0 ATA, max UDMA/133, 240121728 sectors:
ata2: dev 0 configured for UDMA/133
Vendor: ATA Model: Maxtor 6Y120M0 Rev: YAR5
Type: Direct-Access ANSI SCSI revision: 05
SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sda: drive cache: write back
SCSI device sda: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sda: drive cache: write back
sda: sda1 sda2 sda3
Attached scsi disk sda at scsi0, channel 0, id 0, lun 0
Attached scsi generic sg0 at scsi0, channel 0, id 0, lun 0, type 0
Vendor: ATA Model: Maxtor 6Y120M0 Rev: YAR5
Type: Direct-Access ANSI SCSI revision: 05
SCSI device sdb: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sdb: drive cache: write back
SCSI device sdb: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sdb: drive cache: write back
sdb: sdb1 sdb2 sdb3
Attached scsi disk sdb at scsi1, channel 0, id 0, lun 0
Attached scsi generic sg1 at scsi1, channel 0, id 0, lun 0, type 0
ata3: SATA max UDMA/133 cmd 0x9F0 ctl 0xBF2 bmdma 0xE100 irq 10
ata4: SATA max UDMA/133 cmd 0x970 ctl 0xB72 bmdma 0xE108 irq 10
ata3: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 88:407f
ata3: dev 0 ATA, max UDMA/133, 240121728 sectors:
ata3: dev 0 configured for UDMA/133
ata4: dev 0 cfg 49:2f00 82:7c6b 83:7b09 84:4003 85:7c69 86:3a01 87:4003 88:407f
ata4: dev 0 ATA, max UDMA/133, 240121728 sectors:
ata4: dev 0 configured for UDMA/133
Vendor: ATA Model: Maxtor 6Y120M0 Rev: YAR5
Type: Direct-Access ANSI SCSI revision: 05
SCSI device sdc: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sdc: drive cache: write back
SCSI device sdc: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sdc: drive cache: write back
sdc: sdc1 sdc2 sdc3
Attached scsi disk sdc at scsi2, channel 0, id 0, lun 0
Attached scsi generic sg2 at scsi2, channel 0, id 0, lun 0, type 0
Vendor: ATA Model: Maxtor 6Y120M0 Rev: YAR5
Type: Direct-Access ANSI SCSI revision: 05
SCSI device sdd: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sdd: drive cache: write back
SCSI device sdd: 240121728 512-byte hdwr sectors (122942 MB)
SCSI device sdd: drive cache: write back
sdd: sdd1 sdd2 sdd3
Attached scsi disk sdd at scsi3, channel 0, id 0, lun 0
Attached scsi generic sg3 at scsi3, channel 0, id 0, lun 0, type 0
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next prev parent reply other threads:[~2005-10-04 14:56 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-04 14:29 Checking the sanity of SATA disks Andy Smith
2005-10-04 14:42 ` Molle Bestefich
2005-10-04 14:56 ` Andy Smith [this message]
2005-10-04 15:02 ` Molle Bestefich
2005-10-04 15:59 ` Patrik Jonsson
2005-10-04 17:32 ` Dan Stromberg
2005-10-05 11:08 ` Andy Smith
2005-10-09 15:21 ` Mark Hahn
2005-11-07 19:22 ` Bill Davidsen
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