hi; On Sun, 2007-02-11 at 15:47 +0100, Ole Laursen wrote: > Emmanuele Bassi <[EMAIL PROTECTED]> writes: > > >> * I do not see ext3, i guess that's important to use journalised > >> FS on hotplugable device, especially for users who forget to > >> unmount before unplug. > > > > ext3, or any journaled filesystem for that matter, on a flash memory > > device is a no-no, as the journal would disrupt the write queue that the > > devices use to optimise the flash usage. > > That's interesting. Do you have a link with a further explanation?
no link, at the moment. > I would have thought that flash memory and journaled file systems were > a natural fit since you don't have the seek overhead that are present > with disk-based memory. ext3 is a "heavy" file system, with writes occurring in bursts due to the journal, even when filtered through the wear leveling mechanisms that flash-based memories apply (hence the usual suggestion of mounting flash memories using the async parameter, delegating the writes to the card's controller paired with the kernel queue). ciao, Emmanuele. -- Emmanuele Bassi, E: [EMAIL PROTECTED] W: http://www.emmanuelebassi.net B: http://log.emmanuelebassi.net _______________________________________________ gnome-devel-list mailing list [email protected] http://mail.gnome.org/mailman/listinfo/gnome-devel-list
