[sheepdog] About SheepDog's lock

faer317 at 163.com faer317 at 163.com
Wed May 18 07:46:32 CEST 2016

Hi,friends!  Now , i have some problem , i don't understand :

1. write lock
     when two clients send a req  which locate in same block to one vdi, how to make sure my block and block's copies is same?

2. snapshot lock
    Now,  two clients, one client send write req  and one client make snapshot, they operate same vdi,  now,How to mutex?

Thanks a lot!

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