[dm-crypt/LUKS] Sharing a disk (cluster)

[El_Goretto]

Hi,

I plan to share a block device (iSCSI LUN) to be seen by 2 hosts.
I can format this block device with a clustered filesystem. OK. But I plan to encrypt it before, thus introducing another layer between the block layer and the FS.

And I'm not sure if this dm-crypt (with LUKS) setup is "cluster" compliant, I mean if it supports concurrent access.
Basic device-mapper/LVM doesn't, CLVM is to be used as far as I know.

I'm not "into the kernel" enough to be 100% affirmative (or negative ).
Can you help me if you really know what it is about?

Thanks.
_________________
-TrueNAS & jails: µ-serv Gen8 E3-1260L, 16Go ECC + µ-serv N40L, 10Go ECC
-Réseau: APU2C4 (OpenWRT) + GS726Tv3 + 2x GS108Tv2 + Archer C5v1 (OpenWRT)

[richard.scott]

I'd guess that it won't work on two systems in that way... even with CLVM.

I'd love to be prooved wrong tho

[El_Goretto]

Well, I used a "joker" and called a friend...
According to a client support service of another linux distribution, it's OK to cipher.
Let's go and try then.
_________________
-TrueNAS & jails: µ-serv Gen8 E3-1260L, 16Go ECC + µ-serv N40L, 10Go ECC
-Réseau: APU2C4 (OpenWRT) + GS726Tv3 + 2x GS108Tv2 + Archer C5v1 (OpenWRT)