Andreas, I created an ext3 file system on a 16 Meg Partition, and it required ~1 Meg (8%) overhead. Mostly for the journal. On a 1 Gig disk, ext3 grabbed 17 Meg (2%).
A few weeks ago I used that 16 Meg for mdt and mgs along with a 1 Gig OST. With a couple tests it seemed to work just fine. I was able to create 64K files on the 1 Gig disk. I am trying to understand that 400MB number. Can you explain a bit more detail? FYI - we are still evaluating Lustre for our project. Some of the platforms would be very small systems, and we are trying to make sure Lustre will scale down well. Thanks, -David -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Andreas Dilger Sent: Monday, January 29, 2007 7:04 PM To: Lin Shen (lshen) Cc: [email protected] Subject: Re: [Lustre-discuss] disk space needed to run MDS On Jan 29, 2007 12:25 -0800, Lin Shen (lshen) wrote: > I read once in the alias that running MDS requires a minimum disk space > of 400MB + 4kB * number of files. Is this still the case with 1.6beta? Yes. This relates more to ext3 than to Lustre. Cheers, Andreas -- Andreas Dilger Principal Software Engineer Cluster File Systems, Inc. _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss _______________________________________________ Lustre-discuss mailing list [email protected] https://mail.clusterfs.com/mailman/listinfo/lustre-discuss
