Hi all,
I am new to dm-devel. When using dm-thin via lvm, I found it difficult
to share dm-thin on multiple hosts.
The background is that I want to implement live migration of VMs in the
lvm + iSCSI environment, in which lvmlockd is used to coordinate access
to shared storage. There are multiple hosts in the cluster using the
same iSCSI connection, and the VMs running in this environment use
thinlv volumes. But if want to live migrate the vm, it will be difficult
since thinlv which from the same thin pool can only be exclusive active
on one host.
I'm curious why the dm-thin doesn't support multi-host shared access,
just like the dm-linear does. If I try to write a new dm-thin target or
make some modifications based on the existing dm-thin target to support
this feature, is it technically feasible?
Regards!
Zhiyong Ye
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