Online resizing of partitions
Marcus Hoffmann
bubu at bubu1.eu
Mon Oct 7 14:36:26 UTC 2019
Hello,
I was wondering if there's a way to enlarge a mounted disk partition
with busybox tools only.
I found a relatively straightforward way with (s)fdisk and partx or
resizepart from util-linux. Using fdisk from busybox is probably a bit
more fiddly but should be possible.
I haven't found a replacement for partx/resizepart though which tells
the kernel the new partition size.
Resizepart basically only wraps BLKPG_RESIZE_PARTITION ioctl, so it's
easy to write a small tool myself, but I wondered if this is ossible
with on-board tools from busybox or if you'd consider adding some
version of partx or resizepart to busybox.
Best,
Marcus
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