[linux-lvm] [lvmlockd] lvm command hung with sanlock log "ballot 3 abort1 larger lver in bk..."

[David Teigland]

On Thu, Oct 11, 2018 at 09:03:01PM +0800, Damon Wang wrote:
> This is because I regenerate a host id when the host join a new
> lockspace

OK, I guess there's something about your setup that makes it difficult to
assign static host_id's.

>  2018-10-09 20:49:16 4854717 [29802]: r2320 write_host_block host_id
>  19 flags 1 gen 1 dblock 29802:510:140245418403952:140245440585933:140245418403840:4:RELEASED.

Perfect, that shows exactly where the bug is.  There's a case where it has
missed saving the latest dblock values, so random values are being copied
back to the dblock instead.  I'll push out a patch once I've had a chance
to test it.

> does the "paxos_release skip write last lver" is abnormal?

Not very unusual when you have lock contention (multiple hosts trying to
acquire the same lock concurrently.)

Thanks,
Dave