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25. By Scott Moser on 2013-01-10

fix output of MOUNTPOINT

24. By Scott Moser on 2013-01-10

add simple 'run a shell' path

23. By Scott Moser on 2013-01-08

fix issue when day of year is less than 100

'date +%j' might return '008' (today it did).
you can force base 10 by '10#' before the number.

22. By Scott Moser on 2012-12-18

be safer on deletion of filesystems

21. By Scott Moser on 2012-12-18

mount-callback-umount: improvements in command invoking

instead of always just appending the mountpoint to the command,
if the string MOUNTPOINT appears in an argument, replace it with
the mountpoint.

Also, export the variable MOUNTPOINT for simplicity.

Also, other fixes:
  * stop successfull path from invoking qemu-disconnect twice
  * capture qemu-disconnect output showing only on error.
  * some better debug message on mount of nbd device
  * mention that --read-only is incompatible with system-resolvconf

20. By Scott Moser on 2012-12-14

wait for nbd pid file to appear in /sys before continuing qemu-nbd connect

By waiting for the pid file to appear, I'm seeing that this is extremely
less likely to hit a race where the 'mount' fails because the system isn't
ready yet.

Doing a loop like this:

for((i=0;i<50;i++)); do
  sudo ./mount-callback-umount \
    -vv --system-mounts --system-resolvconf disk.img -- \
      sh -c 'echo mounted at $1' -- || { echo "FAILED DUDE"; break; };
done

that will fail in 1 or 2 iterations on 12.04 without the check.
With this wait in place, I can run 2 of those loops (on separate images)
in parallel to completion.

the disk.img in question was a quantal cloud image (qcow2 compressed)

19. By Scott Moser on 2012-12-12

fix typo resulting in failure to use loop at all

18. By Scott Moser on 2012-12-12

add '--system-resolvconf' for copying resolvconf into target

17. By Scott Moser on 2012-12-12

change /bin/sh to /bin/bash

/bin/bash just has better 'trap' handling.
with sh, you can fairly easiliy end up with out the cleanup running
as a result of 'ctrl-c' or something.

16. By Scott Moser on 2012-12-12

mount-callback-umount: fix logic error resulting in UMOUNT not being set