On Fri, 15 Apr 2016 17:42:21 +0200 Niccolò Belli <darkbasic@xxxxxxxxxxxxxxx> wrote: > Hi, > Is it 100% safe to run a btrfs check without --repair? > Because otherwise I will have to wait for my new external drive to arrive > and make a backup first. In cases like these remember that you can use "blockdev --setro /dev/sdX", to ensure that any program (even the root user with 'dd') can't write anything to the block device anymore even if tried. Use "blockdev --setrw /dev/sdX" after you finished. -- With respect, Roman
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