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Re: let the Debian-Installer partitioner recognize LVM logical volumes on encrypted RAID 1 partition



Any ideas, anyone?


Am Donnerstag, den 25.09.2008, 17:46 +0200 schrieb Paul Menzel:
> Dear list,
> 
> 
> I hope this is the right place to ask. If not excuse me and please point
> me to the right one.
> 
> I changed my mainboard with processor with 64 bit capability. I used the
> old hard disks where I installed a Debian 32bit Linux kernel on before,
> which works.
> 
> My goal is to “reinstall” Debian with a 64bit Linux kernel. But
> unfortunately I am getting a problem on the way.
> 
> Idea: Just reinstall Debian amd64 and tell the Debian-Installer to keep
> the old /home and /var partition.
> 
> Problem: I am using a RAID 1 setup with an encrypted partition with LVM
> volumes on it and I do not get the Debian-Installer to recognize it.
> 
> 
> Now I will elaborate a bit. You can find a little more information at
> [1].
> 
> # Setup
> 
> All the following steps were done with the Debian-Installer some time
> ago.
> 
> • two hard disks (SATA) /dev/sda and /dev/sdb
> • Create two partitions sd[ab]0 and sd[ab]1 for boot and data. Each of
> them were put into a RAID 1 array.
> • Encrypt md1 with LUKS.
> • Setup up LVM with logical volumes for /home, /var, /usr, ….
> • Back then I had to use the work around in [2], but this seems
> unrelated.
> 
> # Steps to reinstall Debian with amd64 Linux kernel
> 
> 1. prepare and boot from USB stick with
> debian-testing-amd64-businesscard.iso
> 2. do steps until detect hard disks and than partition hard disk
> 3. raid devices and LVM volumes are not shown
> 4. open a shell and do some steps according to [3]
> 
> # anna-install crypto-modules cryptsetup-udeb
> # depmod -a
> # modprobe dm-mod
> # modprobe aes
> 
> I think after this step the Raid devices are shown in the partitioning
> menu of the Debian-Installer.
> 
> # cryptsetup luksOpen /dev/md1 md1_crypt
> 
> This succeeds. From here on I do not know what to do. I try
> 
> # lvdisplay
> File descriptor 3 left open
> File descriptor 4 left open
> File descriptor 5 left open
> File descriptor 6 left open
> 
> I did not find anything useful searching the Internet. On [4] it says to
> use lsof, but this is not available in the Debian-Installer.
> 
> # mount
> rootfs on / type rootfs (rw)
> none on /proc type proc (rw)
> none on /sys type sysfs (rw)
> tmpfs on /dev type tmpfs (rw,mode=755)
> none on /dev/pts type devpts (rw,mode=600)
> /dev/sdb1 on /hd-media type vfat
> (ro,fmask=0022,dmask=0022,allow_utime=177777,codepage=cp437,iocharset=utf8)
> 
> 
> Can you give me a hint and can I provide more information?
> 
> 
> Thanks a lot,
> 
> Paul
> 
> 
> [1] https://www.debian-administration.org/users/PaulePanter/weblog/3
> [2] http://wiki.debian.org/DebianInstaller/RAIDvsCrypto
> [3] http://wiki.debian.org/DebianInstaller/Rescue/Crypto
> [4] http://archives.devshed.com/forums/linux-97/lvm-file-descriptor-left-open-snapshot-problems-1201586.html

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