----- "Nathan Stratton" <nathan@xxxxxxxxxxxx> wrote: > Version : glusterfs 2.0.0git built on Aug 3 2009 16:40:55 > > If there is a file self-healing in a directory I am no longer able to > access any other files in that directory. Is this normal behavior? You should be able to access other files while a file in a directory is being self-healed (except for a brief period when directory entries are being created/deleted). > Also, can you be modifying a file (say a xen file) at the same time it > is self-healing? If not, should other files still work with that client > during a self-heal? Yes, you can be modifying a file while it is being self-healed. > Lastly, any way to speed up self-heal with disable-direct-io-mode > required for xen? It lowers the I/O rate to a crawl from ~500 MB/s to ~25 MB/s. Two things will help here: a) With a recent FUSE kernel module (> 2.6.26) and forthcoming FUSE improvements we'll be able to get good performance even with direct I/O mode disabled. b) By the 2.1 release, replicate will use the rsync algorithm to do self-heal, which should again cut down the time required to complete self-heal. > Other then that, things are looking so so much better, this is almost > someting I could put in production! Virtualization environments are one of our major focus areas right now. We have contributed to the oVirt project to add GlusterFS support (http://git.et.redhat.com/?p=ovirt-server.git;a=shortlog;h=refs/heads/next). We hope you'll use GlusterFS too! Vikas -- Engineer - http://gluster.com/
