-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 04/01/2014 09:02 PM, Biltong wrote: > I have a raid-1 system running btrfs on top of luks. > > I cannot remember my passphrase, but the system is running and I > have made a backup. > > I'd like to add a new passphrase, and have followed the > instructions from 6.10 at > http://code.google.com/p/cryptsetup/wiki/FrequentlyAskedQuestions#6._Backup_and_Data_Recovery > > This worked for the first device, which seems to work with > /dev/dm-0, but I cannot work out what the device name for the > second raid-1 member is. The btrfs partition is on top of the luks > device, and so I need to change both. > I'm not really clear on what your setup is, but there's basically two choices: 1) encrypt 2 partitions separately (typically /dev/sdxy with x in a..z and y in 1..) leading to /dev/mapper/a and /dev/mapper/b as links to /dev/dm-0 and /dev/dm-1 2) create RAID1 from /dev/mapper/a and /dev/mapper/b, causing /dev/md0 to appear 3) create btrfs (or whatever) on top of /dev/md0 or 1) create RAID1 from 2 partitions (typically /dev/sdxy as above) leading to /dev/md0 2) encrypt /dev/md0 leading to /dev/mapper/a as a link to /dev/dm-0 3) create btrfs (or whatever) on top of /dev/dm-0 If you can't find /dev/dm-1, you might be using the second version. You can also find some information in the output of the mount command (which should show you the crypto device in the first and the RAID device in the second scenario) and from /proc/mdstat showing /dev/mapper/a (or /dev/dm-0) in the first and /dev/sdxy in the second case. Good luck with the research, Heiko - -- eMails verschlüsseln mit PGP - privacy is your right! Mein PGP-Key zur Verifizierung: http://pgp.mit.edu -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlM7LdQACgkQ/Vb5NagElAVK2gCgq7EVxGcc3sTlIgEF3M4oZH62 LrQAn3kmHpBRcnjbWCbBsug5tQYKWS/s =lSG+ -----END PGP SIGNATURE----- _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
