[linux-lvm] Distributed Locking of LVM

Kalyana sundaram kalyanceg at gmail.com
Mon Aug 28 12:41:13 UTC 2017

We have a shared iscsi disk at all our boxes, with one vg. We are using
clvm to manage locks to create extend activate delete list.
CLVM is tedious to manage especially especially due to reboot if locking is
struck somewhere. Instead we are thinking of modifying file_locking.c to
get lock with distributed store like zookeeper or redis and on success run
the above command, on failure backoff and try again
The external ocking code will sit at _file_lock_resource, case LCK_VG.
Do you think its risky. Is there some other way people handle it?

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