I am trying to grow a raid5 volume in-place. I would like to expand the partition boundaries, then grow raid5 into the newly-expanded partitions. I was wondering if there is a way to move the superblock from the end of the "old" partition to the end of the "new" partition. I've tried dd if=/dev/sdX1 of=/dev/sdX1 bs=512 count=256 skip=(sizeOfOldPartitionInBlocks - 256) seek=(sizeOfNewPartitionInBlocks - 256) unsuccessfully. Also, copying the last 128KB (256 blocks) of the old partition before the table modification to a file, and placing that data at the tail of the new partition also yields no beans. I can drop one drive at a time from the group, change the partition table, then hot-add it, but a resync times 7 drives is a lot of juggling. Any ideas?
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