On Tue, Oct 30, 2018 at 4:11 PM, Mirko Klingmann <m.klingmann@xxxxxx> wrote: > Hi all, > > my btrfs root file system on a SD card broke down and did not mount anymore. It might mount with -o ro,nologreplay Typically an SD card will break in a way that it can't write, and mount will just hang (with mmcblk errors). Mounting with both ro and nologreplay will ensure no writes are needed, allowing the mount to succeed. of course any changes that are in the log tree will be missing so recent transactions may be unrecoverable but so far I've had good luck recovering from broken SD cards this way. -- Chris Murphy
