[Lustre-discuss] inode size with mkfs

2010-03-09 Thread Stuart Midgley
After installing e2fsprogs-1.41.6.sun1-0redhat it appears the default inode size for ext file systems changes from 128 to 256 (see /etc/mke2fs.conf). This caused us several days of head scratching as we were trying to figure out why grub wouldn't work on our oss's where we had this package

Re: [Lustre-discuss] RPC limitation

2010-03-09 Thread Jeffrey Bennett
Andreas and Oleg, Sorry to bother you again. Is there any way to force an RPC page size of 256kb and pack several 4kb random operations into a 256k page so the final throughput can increase? Thanks Jeffrey A. Bennett HPC Systems Engineer San Diego Supercomputer Center

Re: [Lustre-discuss] RPC limitation

2010-03-09 Thread Oleg Drokin
Hello! This only works if all the requests are for the same file, then it is done for you automatically (assuming that these are write requests and there is not sync in between. It's impossible to do for reads for obvious reason that read is a synchronous operation and by the time we