Re: failure booting lvm volume group over encrypted disk
On Jan 2, 8:30 pm, Towncat [EMAIL PROTECTED] wrote: On Jan 2, 6:50 pm, Douglas A. Tutty [EMAIL PROTECTED] wrote: On Wed, Jan 02, 2008 at 08:29:30AM -0800, Towncat wrote: On Jan 1, 11:00 pm, Towncat [EMAIL PROTECTED] wrote: I'm trying to make a bootable backup disk based on a href=http:// linuxgazette.net/140/kapil.htmlthis howto/a. The backup is on an external usb-sata drive. There is an sdc1 partition that is not used, a small sdc2 for boot, unencrypted, and an sdc3 encrypted. On this there is a volume group, with two lv-s, one for root and one for swap. When booting the original system, I can open the encrypted disk, but I need to restart lvm for the system to find the volume group on it. I can also mount the lv-s. When I try to boot the backup system, it loads the initramfs, and I get this message: /dev/mapper/vg_externalsata_2-root does not exist. Looking at /proc/modules shows that the dm_crypt module is not loaded (although it seems to be included in the initramfs), which I think might be the problem. Any ideas? Did someone use the same howto with success? Anyone have a hint maybe? I don't even have a clue where to look for the error... What is it you hope this backup disk to do? Why can't you use the debian-install CD in rescue mode to boot up the system in the event of a boot failure? Why do backups need to be bootable? Personally, I put my backups in a tarball (spit to fit on each piece of media) and pipe it through openssl to encrypt it. The point is not the backup, but the encrypted system. The howtohttp://linuxgazette.net/140/kapil.html proceeds by first making an encrypted clone of your system (which is, as a byproduct, also a bootable backup), and then transfers that backup to the original but by then encrypted system disk. However, if I cannot make the encrypted backup bootable, then I won't be able to do the same with the original system on the original disk. Actually, I tried the lenny installer (netinst) to produce an encrypted root system, but I ran into the same problem, that's why I started over by hand. As I said, the problem seems to be that the initramfs does not load the crypt modules and does not do the unencyrpt procedure (even though the modules are included in the initramfs). Thanks, Tc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] FYI all, I figured out the problem, it was my mistake, because the initramfs was actually OK, but I had too boot partitions (one for the original system, one for the backup), and I was updating the wrong one (and booting from the other...) Once I figured out, it did work -- now I have another issue. Tc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: failure booting lvm volume group over encrypted disk
On Jan 1, 11:00 pm, Towncat [EMAIL PROTECTED] wrote: I'm trying to make a bootable backup disk based on a href=http:// linuxgazette.net/140/kapil.htmlthis howto/a. The backup is on an external usb-sata drive. There is an sdc1 partition that is not used, a small sdc2 for boot, unencrypted, and an sdc3 encrypted. On this there is a volume group, with two lv-s, one for root and one for swap. When booting the original system, I can open the encrypted disk, but I need to restart lvm for the system to find the volume group on it. I can also mount the lv-s. When I try to boot the backup system, it loads the initramfs, and I get this message: /dev/mapper/vg_externalsata_2-root does not exist. Looking at /proc/modules shows that the dm_crypt module is not loaded (although it seems to be included in the initramfs), which I think might be the problem. Any ideas? Did someone use the same howto with success? Tc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED] Anyone have a hint maybe? I don't even have a clue where to look for the error... Tc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: failure booting lvm volume group over encrypted disk
On Wed, Jan 02, 2008 at 08:29:30AM -0800, Towncat wrote: On Jan 1, 11:00 pm, Towncat [EMAIL PROTECTED] wrote: I'm trying to make a bootable backup disk based on a href=http:// linuxgazette.net/140/kapil.htmlthis howto/a. The backup is on an external usb-sata drive. There is an sdc1 partition that is not used, a small sdc2 for boot, unencrypted, and an sdc3 encrypted. On this there is a volume group, with two lv-s, one for root and one for swap. When booting the original system, I can open the encrypted disk, but I need to restart lvm for the system to find the volume group on it. I can also mount the lv-s. When I try to boot the backup system, it loads the initramfs, and I get this message: /dev/mapper/vg_externalsata_2-root does not exist. Looking at /proc/modules shows that the dm_crypt module is not loaded (although it seems to be included in the initramfs), which I think might be the problem. Any ideas? Did someone use the same howto with success? Anyone have a hint maybe? I don't even have a clue where to look for the error... What is it you hope this backup disk to do? Why can't you use the debian-install CD in rescue mode to boot up the system in the event of a boot failure? Why do backups need to be bootable? Personally, I put my backups in a tarball (spit to fit on each piece of media) and pipe it through openssl to encrypt it. To restore from bare-metal, I do a basic reintall then retreive the tarball pieces, cat them together in /var/local/bacup, unencrypt it, then untarball it to its directory, then move things around with mc or rsync. My size needs are modest: it all fits on one 4 GB USB stick (set up to boot per the hd-media installer manual instructions) or on a small set of CDs or one DVD. Doug. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
Re: failure booting lvm volume group over encrypted disk
On Jan 2, 6:50 pm, Douglas A. Tutty [EMAIL PROTECTED] wrote: On Wed, Jan 02, 2008 at 08:29:30AM -0800, Towncat wrote: On Jan 1, 11:00 pm, Towncat [EMAIL PROTECTED] wrote: I'm trying to make a bootable backup disk based on a href=http:// linuxgazette.net/140/kapil.htmlthis howto/a. The backup is on an external usb-sata drive. There is an sdc1 partition that is not used, a small sdc2 for boot, unencrypted, and an sdc3 encrypted. On this there is a volume group, with two lv-s, one for root and one for swap. When booting the original system, I can open the encrypted disk, but I need to restart lvm for the system to find the volume group on it. I can also mount the lv-s. When I try to boot the backup system, it loads the initramfs, and I get this message: /dev/mapper/vg_externalsata_2-root does not exist. Looking at /proc/modules shows that the dm_crypt module is not loaded (although it seems to be included in the initramfs), which I think might be the problem. Any ideas? Did someone use the same howto with success? Anyone have a hint maybe? I don't even have a clue where to look for the error... What is it you hope this backup disk to do? Why can't you use the debian-install CD in rescue mode to boot up the system in the event of a boot failure? Why do backups need to be bootable? Personally, I put my backups in a tarball (spit to fit on each piece of media) and pipe it through openssl to encrypt it. The point is not the backup, but the encrypted system. The howto http://linuxgazette.net/140/kapil.html proceeds by first making an encrypted clone of your system (which is, as a byproduct, also a bootable backup), and then transfers that backup to the original but by then encrypted system disk. However, if I cannot make the encrypted backup bootable, then I won't be able to do the same with the original system on the original disk. Actually, I tried the lenny installer (netinst) to produce an encrypted root system, but I ran into the same problem, that's why I started over by hand. As I said, the problem seems to be that the initramfs does not load the crypt modules and does not do the unencyrpt procedure (even though the modules are included in the initramfs). Thanks, Tc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
failure booting lvm volume group over encrypted disk
I'm trying to make a bootable backup disk based on a href=http:// linuxgazette.net/140/kapil.htmlthis howto/a. The backup is on an external usb-sata drive. There is an sdc1 partition that is not used, a small sdc2 for boot, unencrypted, and an sdc3 encrypted. On this there is a volume group, with two lv-s, one for root and one for swap. When booting the original system, I can open the encrypted disk, but I need to restart lvm for the system to find the volume group on it. I can also mount the lv-s. When I try to boot the backup system, it loads the initramfs, and I get this message: /dev/mapper/vg_externalsata_2-root does not exist. Looking at /proc/modules shows that the dm_crypt module is not loaded (although it seems to be included in the initramfs), which I think might be the problem. Any ideas? Did someone use the same howto with success? Tc -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of unsubscribe. Trouble? Contact [EMAIL PROTECTED]
