Date: Thu, 9 Nov 2000 00:15:06 +0100 (CET) From: mw@kpnqwest.ch To: "[Ivan Debn_r]" <debnar@o-c.sk> Cc: janb@cs.utep.edu, freebsd-stable@FreeBSD.ORG, freebsd-current@FreeBSD.ORG, sos@freebsd.dk Subject: Re: ATA RAID - sysinstall solution Message-ID: <200011082315.XAA03055@mail.kpnqwest.ch> In-Reply-To: <NEBBLGGDNJOMBLNHDFHFOEPNCJAA.debnar@o-c.sk> from "[Ivan Debn_r]" at "Nov 8, 2000 04:47:58 pm"
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> OK, i tested this. Sysinstall works fine now, and the system installs OK > from the SNAP 5 ftp server. ON reboot, however, the computer thing refuses > to boot of the RAID device. After the BIOS message "verifying > DMI......"(or similar) the system hangs. Because of the offset 10, sysinstall wrote the fdisk table to the wrong location on the disk... The following little patch fixes this. This should work for both 4 and 5 trees: - look for .. += rdp->offset in ata-raid.c - make this line conditional if (buf1->drive) .. += rdp->offset Of course, as Soren pointed out, you're risking screwing your first partition if you're NOT using an fdisk compatible layout. However, without this patch the RAID is not bootable, so for me the case is clear:-) I've used this with a RAID0 here successfully (incl. booting off it). About the other suggestion, initially installing on the single drive, and then mirroring it (turning it into a RAID1): should work, but be careful not to use the original disk up to the last cylinder. The RAID will be (just) slightly smaller than the individual disk, and if you filled your single disk to the end, FreeBSD will reject the last partition as being out of disk limits. You'll have to adjust the disklabel after the change. Of course, this will also only work with the above patch, or the disklabel won't be found. Good luck, Markus BTW: and many thanks to Soren for his work! -- KPNQwest Switzerland Ltd P.O. Box 1600, Hohlstrasse 550, CH-8048 Zuerich Tel: +41-1-439-4390, Fax: +41-1-439-4391 Markus Wild, Manager Network Operations, e-mail: markus.wild@kpnqwest.ch To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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