From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Mike <michael_six@users.sourceforge.net>
Cc: B.Zolnierkiewicz@elka.pw.edu.pl,
list linux-ide <linux-ide@vger.kernel.org>
Subject: Re: Kernel 2.6.18 and above
Date: Fri, 20 Apr 2007 18:30:29 +1000 [thread overview]
Message-ID: <1177057830.17978.13.camel@localhost.localdomain> (raw)
In-Reply-To: <46286D36.5090609@users.sourceforge.net>
I'm CC'ing linux-ide... looks like the disk which you say is 20GB is
misdetected by the IDE layer as being 2GB.
Ok, so we have:
> >> Probing IDE interface ide0...
> >> hda: WDC WD800JB-00FMA0, ATA DISK drive
> >> hdb: IC35L020AVVN07-0, ATA DISK drive
> >> hda: Enabling Ultra DMA 4
> >> hdb: Enabling Ultra DMA 4
> >> ide0 at 0xf139c000-0xf139c007,0xf139c160 on irq 19
> >> ide1: Found Apple KeyLargo ATA-3 controller, bus ID 0, irq 20
> >> Probing IDE interface ide1...
> >> hdc: PIONEER DVD-RW DVR-111D, ATAPI CD/DVD-ROM drive
> >> hdd: IOMEGA ZIP 250 ATAPI, ATAPI FLOPPY drive
> >> hdc: Enabling MultiWord DMA 2
> >> ide1 at 0xf139e000-0xf139e007,0xf139e160 on irq 20
> >> ide2: Found Apple KeyLargo ATA-3 controller, bus ID 1, irq 21
> >> Probing IDE interface ide2...
> >> Probing IDE interface ide2...
> >> hda: max request size: 128KiB
> >> hda: 156301488 sectors (80026 MB) w/8192KiB Cache, CHS=65535/16/63, UDMA(66)
> >> hda: cache flushes supported
> >> hda: [mac] hda1 hda2 hda3 hda4 hda5 hda6 hda7 hda8 hda9 hda10 hda11 hda12 hda13
> >> hdb: max request size: 128KiB
> >> hdb: 4128768 sectors (2113 MB) w/1863KiB Cache, CHS=4096/16/63, UDMA(66)
Here the drive claims to be 2GB, not 20GB (or is detected as such).
> /dev/hdb
> # type name length base (
> size ) system
> /dev/hdb1 Apple_partition_map Apple 63 @ 1 (
> 31.5k) Partition map
> /dev/hdb2 Apple_Driver43 Macintosh 56 @ 64 (
> 28.0k) Driver 4.3
> /dev/hdb3 Apple_Driver43 Macintosh 56 @ 120 (
> 28.0k) Driver 4.3
> /dev/hdb4 Apple_Driver_ATA Macintosh 56 @ 176 (
> 28.0k) Unknown
> /dev/hdb5 Apple_Driver_ATA Macintosh 56 @ 232 (
> 28.0k) Unknown
> /dev/hdb6 Apple_FWDriver Macintosh 512 @ 288
> (256.0k) Unknown
> /dev/hdb7 Apple_Driver_IOKit Macintosh 512 @ 800
> (256.0k) Unknown
> /dev/hdb8 Apple_Patches Patch Partition 512 @ 1312
> (256.0k) Unknown
> /dev/hdb9 Apple_Free 262144 @ 1824
> (128.0M) Free space
> /dev/hdb10 Apple_HFS Apple_HFS_Untitled_2 39924976 @
> 263968 ( 19.0G) HFS
> /dev/hdb11 Apple_Free 16 @ 40188944
> ( 8.0k) Free space
>
> Block size=512, Number of Blocks=40188960
> DeviceType=0x0, DeviceId=0x0
> Drivers-
> 1: @ 64 for 23, type=0x1
> 2: @ 120 for 36, type=0xffff
> 3: @ 176 for 21, type=0x701
> 4: @ 232 for 34, type=0xf8ff
And here you can see that the partition map tries to use about 20GB...
so there is a discrepancy between what the partition map says and what
the IDE driver says. I suspect old kernel just ignores the later, while
newer kernels enforce the limit which causes your problem.
Bart, I'm a bit at lost as to why the device size would be misdetected,
do you have an idea ? Might be worth getting a dump of the ID block...
Mike, can you send us a dump of the binary file /proc/ide/hdb/identify ?
Ben.
next parent reply other threads:[~2007-04-20 8:34 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4626AEF7.9010804@users.sourceforge.net>
[not found] ` <1177022657.7286.3.camel@localhost.localdomain>
[not found] ` <462811D6.9000304@users.sourceforge.net>
[not found] ` <1177051098.17978.4.camel@localhost.localdomain>
[not found] ` <46286D36.5090609@users.sourceforge.net>
2007-04-20 8:30 ` Benjamin Herrenschmidt [this message]
2007-04-20 9:55 ` Kernel 2.6.18 and above Mike
2007-04-20 20:41 ` Bartlomiej Zolnierkiewicz
2007-04-21 0:15 ` Benjamin Herrenschmidt
2007-04-21 15:28 ` Mark Lord
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