On 31 Jul 2012 01:49, "Δημήτρης Ζέρβας" <01ttouch@xxxxxxxxx> wrote: > > yaffs2 would be faster than ext2? > On Jul 31, 2012 3:21 AM, "Δημήτρης Ζέρβας" <01ttouch@xxxxxxxxx> wrote: > > > hm... I curently use ext2 and I have installation in a partition of my sd > > card. wich fs would be better than ext2, given that I need quich r/w but as > > less writes as possible? Usually you are limited by hardware not by the file system. > > On Jul 31, 2012 3:18 AM, "Leonardo Dagnino" <leodag.sch@xxxxxxxxx> wrote: > > > >> Well, I don't think it will "destroy" the flash... As it is made of NAND > >> flash, I suppose that it reacts pretty much like an SSD. Anyway, it should > >> take a considerable time until it wears out, and if you use it only to > >> install an OS, it won't have any writes, what means that it shouldn't wear > >> out for some years (or at least I hope so) > >> For what I remember, btrfs uses a pretty big amount of space, what means > >> more writes. > >> > >> Leonardo Dagnino > >> > >> Obs.: NAND flash only has a limited amount of erases/writes, not reads. > >> > >> > >> 2012/7/30 Zhengyu Xu <xzy3186@xxxxxxxxx> > >> > >> > I've no idea on how btrfs performs with a flash disk actually. My btrfs > >> > partition just locates on a normal hdd so I have never thought about it > >> :-) > >> > > >> > Regards, > >> > Zhengyu Xu > >> > > >> > On 2012-7-31, at 8:27, Δημήτρης Ζέρβας<01ttouch@xxxxxxxxx> wrote: > >> > > >> > > is it actually safe to format an usb flash to btrfs? won't it destroy > >> the > >> > > flash because of the read/writes? > >> > > On Jul 31, 2012 2:20 AM, "Zhengyu Xu" <xzy3186@xxxxxxxxx> wrote: > >> > > > >> > >> On Mon, 2012-07-30 at 17:36 -0400, Kyle wrote: > >> > >>> Trying to install Arch on a USB key, I am having trouble getting a > >> > >> bootable system. I created a basic BTRFS filesystem and mounted it > >> with > >> > SSD > >> > >> optimizations and compression. I didn't create any subvolumes or > >> > anything > >> > >> else that is said to be problematic when booting to a BTRFS > >> filesystem. > >> > >> From that point, I followed the installation guide for a normal > >> install. > >> > >> However, after reading the documentation for GRUB and Syslinux, my > >> newly > >> > >> created install doesn't boot. I looked at the wiki entry for > >> installing > >> > to > >> > >> a USB key, but it is still written for AIF and grub-legacy. However, > >> the > >> > >> main difference I can find doesn't seem to apply, because although it > >> > >> mentions that the USB key where grub-legacy is installed is always > >> > hd0,0, > >> > >> grub2 is supposed to look for the UUID of the disk, which matches > >> > correctly > >> > >> in /boot/grub/grub.cfg. I also tried setting up this install to boot > >> > using > >> > >> Syslinux, but both bootloaders just drop me into some kind of shell > >> and > >> > >> refuse to boot. Unfortunately, since I am > >> > >>> visually impaired and use speech to install and use Arch, I am > >> unable > >> > to > >> > >> see whether I am in a "normal shell" or a rescue shell, or even what > >> > kind > >> > >> of issue the bootloaders are having that keeps them from finding a > >> > kernel. > >> > >> Should I be using a different filesystem other than BTRFS, even > >> though > >> > both > >> > >> bootloaders are said to support it? Should I not be using compression > >> > on my > >> > >> filesystem? Could this be a problem that is entirely unrelated to the > >> > >> filesystem I'm using? Any help is greatly appreciated. > >> > >>> ~Kyle > >> > >> > >> > >> Did you add usb and btrfs to the hooks array in your mkinitcpio.conf? > >> > >> > >> > >> Regards, > >> > >> Zhengyu Xu > >> > >> > >> > >> > >> > >> > >> > > >> > >
