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? 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 > > >> > > >> > > >> > > >
