On Wed, Mar 15, 2017 at 01:12:44PM +0000, GORECKI, DIETER wrote: > One other thing to consider is the storage of data inside the inode itself > for very small files. GPFS has the ability to use the remaining [kilo]bytes > of the inode to store the data of the file whenever the file is small enough > to fit in. > > Anyone correct me if I am wrong, but with 4k inodes, you can store up to > (4096-128 header) 3968 bytes of data. (without ILM) > > So regarding the size of the files you intend to store into your filesystem, > it might be very interesting to take advantage of the performance of your > SSD's to store small files.
I agree it would, however, I have 30 % free capacity on SSDs only right now (with some snapshots and ~70M files). So I'm afraid I have to either change the rotational disks to hold metadata as well or do not create more files/snapshots or decrease the inode size. I cannot add more SSDs as I do not have free disk slots in HW. -- Lukáš Hejtmánek _______________________________________________ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org http://gpfsug.org/mailman/listinfo/gpfsug-discuss
