On Mon, 12 Jan 2009, Gordan Bobic wrote:
Brent A Nelson wrote:
I believe you're looking for shared writable mmap support, which requires a
very recent (maybe) or painfully-patched FUSE; it's not really up to
GlusterFS (I think it will probably just work, if your FUSE is somehow able
to support it).
I was actually more thinking about an option to rpm/bdb to make it no use
mmap.
I don't know for rpm; apt-get certainly did not have any such option,
although someone did create a patch to disable it in apt-get.
So, if you can't get shared writable mmap to work, try the workaround with
tmpfs or another filesystem (perhaps even an NFS mount of a GlusterFS
directory).
Would that actually work? Exporting /var/lib/rpm via NFS and mounting it to
fake some kind of mmap support? It's an inspired solution, I'll grant you
that. I'll have to try it. :-)
tmpfs certainly worked in my case, and others claimed that NFS in general
would work. NFS to a filesystem that doesn't itself support shared
writable mmap (such as GlusterFS or any other FUSE filesystem)? Well, we
probably won't know for sure until you try it. ;-)
Check with tmpfs first, to make sure you've set up any necessary symlinks
(as tmpfs certainly should work), and then try switching to GlusterFS NFS
re-export.
Thanks,
Brent
