I'm attempting to grow
/dev/sda5, which is an 'lvm2 pv' partition, but it's contained in
/dev/sda2, which is an extended partition.
There is plenty of "unallocated" space immediately after
/dev/sda2, since I've just cloned my previous disk to a larger one.
My plan is to resize the extended partition, and then resize the contained PV to match. Then I'll extend the VG and the filesystem.
So I've booted using a Linux Mint 17.1 USB stick and run gparted. It won't let me resize the extended partition, claiming that it's "Busy (At least one logical partition is mounted)".
cat /proc/mounts) doesn't show anything other than the Live USB image mounted.
What's the problem?