[ceph-users] Re: Question about per MDS journals

2021-02-25 Thread John Spray
Quite right, I flipped them while writing the mail - oops. John On Thu, Feb 25, 2021 at 6:04 PM Mykola Golub wrote: > > On Thu, Feb 25, 2021 at 09:59:41AM +, John Spray wrote: > > osdc/Journaler is for RDB, client/Journaler is for CephFS. > > Actually, src/journal/(Journ

[ceph-users] Re: Question about per MDS journals

2021-02-25 Thread John Spray
two Journaler class. > One is at "src/osdc/Journaler.h" and the other one is at > "src/journal/Journaler.h". > If you don't mind, could you tell me which one is for MDS journal? and the > differences between them? > > Thanks. > kyujin > > 2021년 2

[ceph-users] Re: Question about per MDS journals

2021-02-24 Thread John Spray
On Wed, Feb 24, 2021 at 9:10 AM 조규진 wrote: > > 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