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Re: RAID installation at boot questions

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On Sat, 14 Nov 2020 08:12:41 +0100
john doe <johndoe65534@mail.com> wrote:

> >
> > What do I do to automate that?
> >  
> 
> 
> 
> Is your '/etc/crypttab' file properly populated?

Well, I thought it was....

At first I got the UUID for the RAID device, /dev/md0:

root@hawk:~# mdadm --detail /dev/md0
/dev/md0:
           Version : 1.2
     Creation Time : Thu Nov 12 12:06:28 2020
        Raid Level : raid1
        Array Size : 3906884416 (3725.90 GiB 4000.65 GB)
     Used Dev Size : 3906884416 (3725.90 GiB 4000.65 GB)
      Raid Devices : 2
     Total Devices : 2
       Persistence : Superblock is persistent

     Intent Bitmap : Internal

       Update Time : Sat Nov 14 11:52:39 2020
             State : clean 
    Active Devices : 2
   Working Devices : 2
    Failed Devices : 0
     Spare Devices : 0

Consistency Policy : bitmap

              Name : hawk:0  (local to host hawk)
              UUID : 0d3ec9c1:2bc5b3e8:24a27283:c0cad01b
            Events : 12270

    Number   Major   Minor   RaidDevice State
       0       8       33        0      active sync   /dev/sdc1
       1       8       49        1      active sync   /dev/sdd1
root@hawk:~# 

and set that up as a line in /etc/crypttab:

encryptedRaid UUID=0d3ec9c1-2bc5-b3e8-24a2-7283c0cad01b none luks

Didn't work, and gave a 90 second timeout.

Note that the UUID in crypttab is re-formatted to agree with the other
UUIDs in that file, dashes rather than colons. Is that relevant?

Or (afterthought here) did I give it the wrong UUID?

root@hawk:~# ll /dev/disk/by-uuid/
total 0
drwxr-xr-x 2 root root 300 Nov 14 11:52 ./
drwxr-xr-x 8 root root 160 Nov 14 11:51 ../
lrwxrwxrwx 1 root root  10 Nov 14 11:52 343ed59e-ae41-4733-8277-f1b77de67479 -> ../../sda5
lrwxrwxrwx 1 root root  10 Nov 14 11:52 52be92ca-795f-46ef-9c52-074fceedc53c -> ../../dm-1
lrwxrwxrwx 1 root root   9 Nov 14 11:52 57de8169-da6c-4952-b6ac-25e6c87dbf1a -> ../../md0
...
root@hawk:~#

Anyway, I tried it by device name, and that worked.

encryptedRaid /dev/md0 none luks

Useful tip: that worked without a prompt because I gave /dev/md0's
encryption the same passphrase I gave the other encrypted partitions.

This also works:

encryptedRaid /dev/md0 /root/raid.encrypt.password.txt luks


-- 
Does anybody read signatures any more?

https://charlescurley.com
https://charlescurley.com/blog/

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Thread

RAID installation at boot questions Charles Curley <charlescurley@charlescurley.com> - 2020-11-14 04:50 +0100
  Re: RAID installation at boot questions john doe <johndoe65534@mail.com> - 2020-11-14 08:20 +0100
    Re: RAID installation at boot questions Charles Curley <charlescurley@charlescurley.com> - 2020-11-14 20:50 +0100
      Re: RAID installation at boot questions Toni Mas Soler <antomassol@gmail.com> - 2020-11-14 23:10 +0100
        Re: RAID installation at boot questions Charles Curley <charlescurley@charlescurley.com> - 2020-11-15 01:00 +0100
      [Solved] Re: RAID installation at boot questions Charles Curley <charlescurley@charlescurley.com> - 2020-11-20 19:00 +0100

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