At Wed, 17 Aug 2011 13:11:51 +0200, Arnd Bergmann wrote: > > On Wednesday 17 August 2011, James Tunnicliffe wrote: > > One thing I noticed during Ubuntu boot on my Panda was that the mount > > process would say that it detected btrfs was running on a flash card > > and it had enabled flash mode. I don't know what is different in flash > > mode and I don't know if when I let Ubuntu auto-mount a flash card for > > testing on my Laptop if it enabled it. The only mount option I can > > find that sounds right is "ssd", which isn't on when I just tested it > > now. > > Good point. Tixy, do you know what mode you were testing btrfs with? > > btrfs understands the 'ssd', 'ssd_spread' and 'nossd' mount options that > should have a significant impact here, although it's not clear which of > these is best for a flash memory card, since the characteristics of > SD cards are very different from SSD. > > The version of btrfs that I'm looking at does not have any optimization > for cheap flash drives, only for SSD.
does anyone checked on seekwatcher[1], a visualizing tool Chris Mason has wrote. I'm pretty sure that Chris would like to hear what went good and bad for btrfs as an embedded system's root file system. [1]:http://oss.oracle.com/~mason/seekwatcher/ just my 2 cents. -- yashi _______________________________________________ linaro-dev mailing list linaro-dev@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-dev
