Question about per-MDS journals

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi.

I'm a newbie in CephFS and I have some questions about how per-MDS journals work.
In Sage's paper (osdi '06), I read that each MDSs has its own journal and it lazily flushes metadata modifications on OSD cluster.
What I'm wondering is that some directory operations like rename work with multiple metadata and It may work on two or more MDSs and their journals,
so I think it needs some mechanisms to construct a transaction that works on multiple journals like some distributed transaction mechanisms.

Could anybody explains how per-MDS journals work in such directory operations? or recommends some references about it? 

Thanks.
kyujin.
_______________________________________________
ceph-users mailing list -- ceph-users@xxxxxxx
To unsubscribe send an email to ceph-users-leave@xxxxxxx



[Index of Archives]     [Information on CEPH]     [Linux Filesystem Development]     [Ceph Development]     [Ceph Large]     [Ceph Dev]     [Linux USB Development]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]     [xfs]


  Powered by Linux