Chris Snook wrote: > Eric Sandeen wrote: >> Peter Robinson wrote: >> >>> Do you have recommended FS creation parameters for SSDs? >> Not really; there has unfortunately been very little (or no) >> optimization of ext4 for SSDs at this point ... >> >> It'd probably be an allocator heuristic change but nobody's looked into >> that yet. >> >> Once we get ext4 raid-geometry-aware, we can probably use some of that >> geometry info to better match up with the erase block sizes on an SSD at >> least... > > In my testing (without a filesystem), raid-optimized access works quite well on > SSDs, so that should carry over quite effortlessly. The places where we need > work are: > > a) Make jbd do fewer small writes. > > b) Write a partitioning tool that doesn't suck the way fdisk and parted do, so > we can partition properly for the geometry of modern storage. parted and fdisk can do 512-byte sector granularity; what do you need here? > c) Put an alignment option in the installer, so people can optimize their > partitions and filesystems for SSDs, RAID, and anything else where alignment > matters. mkfs should be doing this, not the installer. mkfs.xfs does; mkfs.ext$FOO should too. -Eric > -- Chris > -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
