booting from the other disk of a RAID-1 (was: Needed: a grub2 expert)
Scott Ferguson prettyfly.producti...@gmail.com writes: On 28/06/11 05:00, lee wrote: martin f krafft madd...@debian.org writes: snipped He could try to turn off USB legacy support in the BIOS. Thank you! Different issue - but that fixed it! :-) I'm glad it helped you and Peter. Now the question is how to actually solve the problem that one can boot from only one of the disks in a RAID-1 array. The point is to still be able to run the system when a disk fails. Should the one you boot from fail and you halt the system to replace it, how do you boot? -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87aad2gvuz.fsf...@yun.yagibdah.de
Re: booting from the other disk of a RAID-1 (was: Needed: a grub2 expert)
also sprach lee l...@yun.yagibdah.de [2011.06.28.1115 +0200]: I'm glad it helped you and Peter. Now the question is how to actually solve the problem that one can boot from only one of the disks in a RAID-1 array. The point is to still be able to run the system when a disk fails. Should the one you boot from fail and you halt the system to replace it, how do you boot? Grub resides on all components of the array (ideally in their MBR). It loads off any one of them and then runs its own RAID-assembly code, which can assemble a degraded RAID-1. Then it loads kernel and initrd from the filesystem on that array and passes control to the kernel… -- .''`. martin f. krafft madduck@d.o Related projects: : :' : proud Debian developer http://debiansystem.info `. `'` http://people.debian.org/~madduckhttp://vcs-pkg.org `- Debian - when you have better things to do than fixing systems whale feces or working at microsoft? i would probably be the whale feces researcher. salt air and whale flatulence; what could go wrong? -- michael moyer, executive editor of _popular science_ digital_signature_gpg.asc Description: Digital signature (see http://martin-krafft.net/gpg/sig-policy/999bbcc4/current)
Re: Needed: a grub2 expert
martin f krafft madd...@debian.org writes: also sprach Peter Tenenbaum peter.g.tenenb...@gmail.com [2011.06.26.0227 +0200]: I suppose that is possible. However, the workstation has 2 internal hard drives (both in the RAID-1 array), 1 internal DVD-ROM player, and the external USB hard drive; total of 4. Is there something else in the system which can take a drive slot from the BIOS? If not, then 4 slots should be enough to allow them all to initialize properly. It could be that the external USB drive causes the BIOS to reorder the drives, which might throw off grub2 as well. See if you can somehow stabilise the drive order in the BIOS. He could try to turn off USB legacy support in the BIOS. -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/87tybbkslp@yun.yagibdah.de
Re: Needed: a grub2 expert
That worked, thanks! -PT On Mon, Jun 27, 2011 at 12:00 PM, lee l...@yun.yagibdah.de wrote: martin f krafft madd...@debian.org writes: also sprach Peter Tenenbaum peter.g.tenenb...@gmail.com [2011.06.26.0227 +0200]: I suppose that is possible. However, the workstation has 2 internal hard drives (both in the RAID-1 array), 1 internal DVD-ROM player, and the external USB hard drive; total of 4. Is there something else in the system which can take a drive slot from the BIOS? If not, then 4 slots should be enough to allow them all to initialize properly. It could be that the external USB drive causes the BIOS to reorder the drives, which might throw off grub2 as well. See if you can somehow stabilise the drive order in the BIOS. He could try to turn off USB legacy support in the BIOS.
Re: Needed: a grub2 expert
On 28/06/11 05:00, lee wrote: martin f krafft madd...@debian.org writes: snipped He could try to turn off USB legacy support in the BIOS. Thank you! Different issue - but that fixed it! :-) One machine (Intel whiteboard) would cold boot without issue - but reboots would hang before grub is loaded, unless the external USB drives where unplugged. Your tip fixed that. Cheers -- I have a scoop for you. I stole his act. I camouflaged it with punchlines, and to really throw people off, I did it before he did. ~ Bill Hicks (on Dennis Leary) -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/4e094ffb.1000...@gmail.com
Re: Needed: a grub2 expert
also sprach Peter Tenenbaum peter.g.tenenb...@gmail.com [2011.06.26.0227 +0200]: I suppose that is possible. However, the workstation has 2 internal hard drives (both in the RAID-1 array), 1 internal DVD-ROM player, and the external USB hard drive; total of 4. Is there something else in the system which can take a drive slot from the BIOS? If not, then 4 slots should be enough to allow them all to initialize properly. It could be that the external USB drive causes the BIOS to reorder the drives, which might throw off grub2 as well. See if you can somehow stabilise the drive order in the BIOS. -- .''`. martin f. krafft madduck@d.o Related projects: : :' : proud Debian developer http://debiansystem.info `. `'` http://people.debian.org/~madduckhttp://vcs-pkg.org `- Debian - when you have better things to do than fixing systems anyone who is capable of getting themselves made president should on no account be allowed to do the job -- douglas adams digital_signature_gpg.asc Description: Digital signature (see http://martin-krafft.net/gpg/sig-policy/999bbcc4/current)
Needed: a grub2 expert
I'm having a problem with my debian squeeze desktop. The problem is as follows: I have a system with a software raid-1 root partition (set up with mdadm) and a non-raid boot partition. The system uses grub2 as its bootloader. Under ordinary circumstances everything works correctly, but when I have my (non-bootable) Seagate FreeAgent USB hard drive connected via the front-panel USB port, booting hangs. Through use of echo statements, I've traced the problem to a block of code at the top of my grub.cfg file: insmod raid insmod mdraid insmod part_msdos insmod part_msdos insmod ext2 The first statement executes correctly, but execution hangs between completion of the insmod raid statment and the insmod mdraid statement. Since this is clearly a grub2 problem rather than a true debian problem, is there anyone who can point me to a resource on grub2 which might help me resolve this? A grub2 guru would be wonderful, if any are known! Thanks in advance, -PT
Re: Needed: a grub2 expert
also sprach Peter Tenenbaum peter.g.tenenb...@gmail.com [2011.06.25.2028 +0200]: Under ordinary circumstances everything works correctly, but when I have my (non-bootable) Seagate FreeAgent USB hard drive connected via the front-panel USB port, booting hangs. Your USB drive probably get initialised and takes one of the x (usually 4) slots of drives provided by the BIOS. When your internal drives initialise, one does not get a slot. Hence grub2 hangs. Not much you can do I think. -- .''`. martin f. krafft madduck@d.o Related projects: : :' : proud Debian developer http://debiansystem.info `. `'` http://people.debian.org/~madduckhttp://vcs-pkg.org `- Debian - when you have better things to do than fixing systems gentoo: the performance placebo. digital_signature_gpg.asc Description: Digital signature (see http://martin-krafft.net/gpg/sig-policy/999bbcc4/current)
Re: Needed: a grub2 expert
I suppose that is possible. However, the workstation has 2 internal hard drives (both in the RAID-1 array), 1 internal DVD-ROM player, and the external USB hard drive; total of 4. Is there something else in the system which can take a drive slot from the BIOS? If not, then 4 slots should be enough to allow them all to initialize properly. -PT On Sat, Jun 25, 2011 at 12:32 PM, martin f krafft madd...@debian.orgwrote: also sprach Peter Tenenbaum peter.g.tenenb...@gmail.com [2011.06.25.2028 +0200]: Under ordinary circumstances everything works correctly, but when I have my (non-bootable) Seagate FreeAgent USB hard drive connected via the front-panel USB port, booting hangs. Your USB drive probably get initialised and takes one of the x (usually 4) slots of drives provided by the BIOS. When your internal drives initialise, one does not get a slot. Hence grub2 hangs. Not much you can do I think. -- .''`. martin f. krafft madduck@d.o Related projects: : :' : proud Debian developer http://debiansystem.info `. `'` http://people.debian.org/~madduckhttp://vcs-pkg.org `- Debian - when you have better things to do than fixing systems gentoo: the performance placebo.
Re: Needed: a grub2 expert
On Sat, Jun 25, 2011 at 2:28 PM, Peter Tenenbaum peter.g.tenenb...@gmail.com wrote: I'm having a problem with my debian squeeze desktop. The problem is as follows: I have a system with a software raid-1 root partition (set up with mdadm) and a non-raid boot partition. The system uses grub2 as its bootloader. Under ordinary circumstances everything works correctly, but when I have my (non-bootable) Seagate FreeAgent USB hard drive connected via the front-panel USB port, booting hangs. Through use of echo statements, I've traced the problem to a block of code at the top of my grub.cfg file: insmod raid insmod mdraid insmod part_msdos insmod part_msdos insmod ext2 The first statement executes correctly, but execution hangs between completion of the insmod raid statment and the insmod mdraid statement. Since this is clearly a grub2 problem rather than a true debian problem, is there anyone who can point me to a resource on grub2 which might help me resolve this? A grub2 guru would be wonderful, if any are known! help-g...@gnu.org and grub-de...@gnu.org -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/BANLkTiØRQdX5PL7vk6Ht7k0kC7h=a...@mail.gmail.com
