Re: mds: first stab at lookup-by-ino problem/soln description

2013-01-16 Thread Yan, Zheng
On Thu, Jan 17, 2013 at 5:52 AM, Gregory Farnum g...@inktank.com wrote: My biggest concern with this was how it worked on cluster with multiple data pools, and Sage's initial response was to either 1) create an object for each inode that lives in the metadata pool, and holds the backtraces

Re: mds: first stab at lookup-by-ino problem/soln description

2013-01-16 Thread Gregory Farnum
On Wed, Jan 16, 2013 at 3:54 PM, Sam Lang sam.l...@inktank.com wrote: On Wed, Jan 16, 2013 at 3:52 PM, Gregory Farnum g...@inktank.com wrote: My biggest concern with this was how it worked on cluster with multiple data pools, and Sage's initial response was to either 1) create an object for

mds: first stab at lookup-by-ino problem/soln description

2013-01-15 Thread Sage Weil
One of the first things we need to fix in the MDS is how we support lookup-by-ino. It's important for fsck, NFS reexport, and (insofar as there are limitations to the current anchor table design) hard links and snapshots. Below is a description of the problem and a rough sketch of my proposed