On Fri, Sep 07, 2012 at 05:05:15PM +0100, Conrad Hughes wrote: > Package: grub-installer > Version: 1.78 > Severity: important > Tags: d-i > > Dear Maintainer, > > I've been trying to install testing (wheezy) on a laptop with "SATA RAID" 0 > (trying > to preserve dual boot with an existing Windows install). Used manual > partitioning, > having booted installer with "dmraid=true" kernel flag. Set up a small > partition > for /boot, and then a large dm-crypt partition, on which I created an LVM > containing > "swap" and "root". Install failed when trying to install Grub (I think it > tried to > install to hda1 or something like that). However, the Debian wiki on SATA > RAID says > to expect failure, and fix this from rescue mode. So, reboot to rescue mode: > installer identifies the encrypted partition, mounts it and finds the > encrypted > /dev/mapper/waif-root partition, so start a shell there. The wiki page says > to run > "grub-install /dev/dm", which fails with a "no such disk" error; a comment > suggested > using the base /dev/mapper name for the RAID array, which appears to be the > right > thing: "grub-install /dev/mapper/isw_feefgadah_Volume0" doesn't complain > about the > disk, but dies with "Autodetection of a filesystem of /dev/mapper/waif-root > failed" > (waif is the name of my volume group). > > Some online comments suggest that this is a problem with > /boot/grub/device.map. > Here's mine: > > (hd0) /dev/disk/by-id/usb-LG_USB_DRIVE_44C4435EF3D60051-0:0 > (hd1) /dev/disk/by-id/ata-MZ-RPC512T_0SO_S0Z6NE0C601503 > (hd2) /dev/disk/by-id/ata-MZ-RPC512T_0SO_S0Z6NE5C601503 > (hd3) /dev/mapper/isw_feefgadah_Volume0 > > .... hd0 is the USB install disk; hd1 and hd2 the real hard drives; hd3 the > RAID > array. This is exactly what grub-mkdevicemap produces. If I manually add > this > line: > > (hd4) /dev/mapper/dm-6_crypt > > .... pointing to the encrypted volume containing the LVM, then the above > grub-install > command executes without complaint. However, when I reboot it can't find > its disc > and confronts me with a "grub> " prompt. I can get the install to work > without > encryption, but this is undesirable for obvious reasons. Have you any > suggestions > please?
In my experience dmraid is a disaster. mdadm on the other hand can run intel software raid these days, so you may have more luck if you use that. Look up the mdadm commands for managing isw raids. -- Len Sorensen -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
