On 04/22/2016 12:19 PM, Chris Murphy wrote:
On Fri, Apr 22, 2016 at 12:54 PM, Samuel Sieb <sam...@sieb.net> wrote:
e2fsck -fn /dev/sda3

-f to force it, -n to do it-read-only

In the OP's example where an md2 device was affected, it needs fsck
run on /dev/md2 (assembled and running but not mounted). Since md2 is
his root fs, that means a.) boot from alternate media or b.) use boot
parameter rd.break=pre-mount and do it at the dracut shell, but this
might require manually running the array, I'm not sure whether it will
be running at this point but it probably won't be mounted (check
first).

Sorry, I was copying the previous poster and forgot the device was specified earlier. The command to run is "e2fsck -fn /dev/md2". That can be run while it's mounted to give an idea of what's wrong with the filesystem.
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