borgbackup/borg

"sparse" block devices

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#5.609 aberto em 3 de jan. de 2021

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Description

for files on supporting filesystems, we have the SEEK_HOLE/SEEK_DATA api.

but this does not apply to block devices, we need something else to detect unused blocks in these.

For block devices, sometimes another API is supported:

Since recently, borg fixed blocksize chunker can accept a sparse map / file map, but there is no way yet to build that map for a block device.

Related to #14.

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