Messages in this thread | | | Date | Thu, 11 Apr 2002 06:08:45 +0200 | From | Baldur Norddahl <> | Subject | More than 10 IDE interfaces |
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Hi,
I have a machine with the following configuration:
2 on board IDE interfaces (AMD chipset) 2 Promise Technology UltraDMA100 controllers with each 2 IDE interfaces. 4 Promise Technology UltraDMA133 controllers with each 2 IDE interfaces.
This adds up to 14 IDE interfaces. And I just discovered that the kernel only supports 10 IDE interfaces :-(
So I tried to hack the kernel, and I was partially successfull. I changed MAX_HWIF from 10 to 14. I made up some major numbers for the extra interfaces (115, 116, 117 and 118).
drivers/ide/ide.c and fs/partitions/check.c were modified to know about IDE10_MAJOR to IDE13_MAJOR.
With there changes the kernel detects the extra interfaces and the disks on them. They get some strange names like IDE< and the last disk is named hd{, but I guess I can live with that :-)
But when it tries to detect the partitions on the extra interfaces, it locks up. The last lines it writes is:
Partition check: hda: hda1 hde: hde1 hdg: hdg1 hdi: hdi1 hdk: hdk1 hdm: hdm1 hdo: hdo1 hdq: hdq1 hds: hds1 hdu:
I am looking for any clues about how to do this.
Some information about the system:
Linux kernel 2.4.18 with ide.2.4.18-rc1.02152002.patch IDE patches applied. Dual Athlon MP 1800+ 1.53 GHz. Tyan Tiger MPX motherboard, AMD 760 MPX chipset. 8 x 80 GB western digital disks in a raid5, 4 x 160 GB maxtor in a raid5, the two raids are merged with LVM into one filesystem with reiserfs.
Thanks, Baldur - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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