Hi, I'm doing a master's degree in the distributed file system, cephfs
in HPC, and I have some questions about the migration subtree to another
MDS to balance the MDS cluster.
* The Sage Weil Ph.D. thesis and the documentation on the ceph site say
that before migrating to balancer MDS, the first step is freezing the
subtree and unfreezing it after the migration is complete. Doesn't it
affect the performance? Freezing all subtrees until migration.
* Can explain why it freezes all subtree operations during migration to
another MDS to balance the MDS cluster?
* Is It possible to change the migration process to migrate brute INODES
and now freeze the subtree to migrate INODES that have modifications
during the brute migration? As live virtual machines migrate.
Sorry, if my question is so dummy. I'm really trying to understand the
subtree migration process to balance MDS. If I'm wrong, can explain the
process or indicate where I can find documentation or paper about the
subtree migration process. Thanks so much.
--
Odair M. Ditkun Jr
Research group Center of science computation and open source
Master's candidate in Networking and Distributed System — University of
state Paraná – Brazil
_______________________________________________
Dev mailing list -- dev@xxxxxxx
To unsubscribe send an email to dev-leave@xxxxxxx
