Messages in this thread | | | Date | Thu, 23 Oct 2003 14:52:39 -0300 | From | Flavio Bruno Leitner <> | Subject | Re: kernel/initrd and rootfs over LVM |
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On Thu, Oct 23, 2003 at 11:56:16AM -0400, Valdis.Kletnieks@vt.edu wrote: > What I ended up doing to get that working back in the 2.5.4x days was to have > my initrd's linuxrc do a 'lvm vgscan' to get the volume group online, and then > an 'lvdisplay' - this of course wedged up after it since there wasn't a proper > root=, but it revealed the numbers I needed.
It's an option, but I was thinking if there is no way to name_to_dev_t() handle this case, so all rootfs devices will uses the same syntax.
> As far as I can tell, if you're using the device-mapper in 2.6, you'll want > MAJOR=, and then the MINOR= seems to be stable across 2.4/2.6/lvm1/lvm2 (So if > you're building the system under 2.4 and have LVM running there, you can get > the minor number from lvdisplay there, and use it with major=254 to get your > 2.6 up and running. For lilo, I ended up using this: > > root=65029 > # magic number is major=254 * 256 + minor=5
It works too. It's just hard to upgrade many machines when you already have root=/dev/vg../lv.. at grub config.
-- Flávio Bruno Leitner <fbl@conectiva.com.br> [ E74B 0BD0 5E05 C385 239E 531C BC17 D670 7FF0 A9E0 ] - 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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