On Sun, Jul 01, 2018 at 01:15:09PM -0600, Chris Murphy wrote:
> > How is it supposed to work when you have multiple devices for a btrfs
> > filesystem?
> >
> > gargamel:~# btrfs check --repair -p /dev/bcache2
> > enabling repair mode
> > ERROR: mount check: cannot open /dev/bcache2: No such device or address
> > ERROR: could not check mount status: No such device or address
> > gargamel:~# btrfs check --repair -p /dev/bcache3
> > enabling repair mode
> > ERROR: cannot open device '/dev/bcache3': Device or resource busy
> > ERROR: cannot open file system
> >
> > [205248.299528] BTRFS info (device bcache3): disk space caching is enabled
> > [205248.320335] BTRFS error (device bcache3): Remounting read-write after error is not allowed
>
> If it's successfully unmounted, I don't understand the error messages
> that it can't be opened. Is umount hung? Sounds to me like btrfs check
> thinks it's still mounted.
I spent more time on this and apparently because the underlying device
had a hardware fault (fell off the bus), its dmcrpyt device is still
there but not working.
In turn, I can't dmsetup rm it because it's in use by bcache which
didn't free it, but bcache won't let me free it because it got removed.
So, I'm stuck with a reboot in the end, oh well...
Marc
--
"A mouse is a device used to point at the xterm you want to type in" - A.S.R.
Microsoft is to operating systems ....
.... what McDonalds is to gourmet cooking
Home page: http://marc.merlins.org/ | PGP 7F55D5F27AAF9D08
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