On Mon, Dec 14, 2009 at 6:32 PM, Greg Freemyer
Audrius,
The latest and greatest SDD feature is trim/unmap. Not many shipping drives have the feature, but firmware updates may add it your drive in the future. It is a performance feature that allows the SSD to know which data blocks are not in use by the filesystem, so it can pre-erase those blocks and have them available for use in advance.
The linux kernel does not yet have full support for trim/unmap (as I understand it). Current efforts target EXT4 / XFS / FAT. ext2/3 are not expected to ever grow support for this feature.
OTOH, Mark Lord has a userspace tool to leverage unmap that is designed to be called on a scheduled basis (similar to how defrag is done.)
Mark Lord's tool depends on fallocate support in the filesystem. ext4 and xfs at a minimum have that. I don't know which others. (ext3?)
Mark is the maintainer of hdparm, so you can find the "wiper" script at:
Dear Greg, thank you very much for answer! I use EXT4 or XFS. Now have installed with EXT4. Before have installed opensuse in T61 with XFS and that was very pleasant system without any problems. I will look at script and try to use it. Audrius -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org