5 added 596 characters in body
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Under booted linux (3.16-2-amd64) I have:

$ ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 236 mars  25 13:44 control
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-home -> ../dm-5
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-root -> ../dm-0
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-swap_1 -> ../dm-3
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-tmp -> ../dm-4
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-usr -> ../dm-1
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-var -> ../dm-2

and :

$ grep dm_mod /proc/modules
dm_mod 89373 20 - Live 0xffffffffa021f000

Under booted linux (3.16-2-amd64) I have:

$ ls -l /dev/mapper/
total 0
crw------- 1 root root 10, 236 mars  25 13:44 control
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-home -> ../dm-5
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-root -> ../dm-0
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-swap_1 -> ../dm-3
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-tmp -> ../dm-4
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-usr -> ../dm-1
lrwxrwxrwx 1 root root       7 mars  25 13:44 fabienm-var -> ../dm-2

and :

$ grep dm_mod /proc/modules
dm_mod 89373 20 - Live 0xffffffffa021f000
4 added 396 characters in body
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[edit]

On initramfr (kernel 3.16.0-4-amd64) I launched somes commands :

(initramfs) grep dm_mod /proc/modules
dm_mod 89373 4 - live 0xFFFFFFFFA023E000

And in /dev/mapper I only see fabienm-root partition :

(initramfs) ls -l /dev/mapper/
total 0
crw------- 1 0 0 10, 236 Mar 25 12:39 control
lrwxrwxrwx 1 0 0       7 Mar 25 12:39 fabienm-root -> ../dm-0

[edit]

On initramfr (kernel 3.16.0-4-amd64) I launched somes commands :

(initramfs) grep dm_mod /proc/modules
dm_mod 89373 4 - live 0xFFFFFFFFA023E000

And in /dev/mapper I only see fabienm-root partition :

(initramfs) ls -l /dev/mapper/
total 0
crw------- 1 0 0 10, 236 Mar 25 12:39 control
lrwxrwxrwx 1 0 0       7 Mar 25 12:39 fabienm-root -> ../dm-0
3 added 258 characters in body
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2 added 38 characters in body
source | link
1
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