package qcow

CHANGES.md

0.7.0 (2016-12-10)

• now functorised over TIME

• allow background compact to be cancelled

• cancel background compact to allow regular I/O to go through

• don't trigger the background compact until 1s after the last discard

• on connect, sanity-check the image

0.6.0 (2016-12-04)

• rename ocamlfind package from qcow-format to qcow for uniformity

• add support for runtime configuration arguments to connect and create

• add support for discard (aka TRIM or UNMAP) and online compaction (through a stop-the-world GC)

• switch the build from oasis to topkg (thanks to @jgimenez)

0.5.0 (2016-11-26)

• resize now takes a new size in bytes (rather than sectors) and uses a labelled argument

• qcow-tool info now takes a --filter <expression> for example qcow-tool info ... --filter .size to view the virtual size

0.4.2 (2016-09-21)

• Don't break the build if Block.connect has optional arguments

0.4.1 (2016-08-17)

• Remove one necessary source of flush calls

• CLI: add mapped command to list the mapped regions of a file

0.4 (2016-08-03)

• For buffered block devices, call flush to guarantee metadata correctness

• In lazy_refcounts mode (the default), do not compute any refcounts

• CLI: the repair command should recompute refcounts

0.3 (2016-05-12)

• Depend on ppx, require OCaml 4.02+

0.2 (2016-01-15)

• Use qcow version 3 by default, setting lazy_refcount=on

• Unit tests now verify that qemu-img check is happy and that qemu-nbd sees the same data we wrote

0.1 (2015-11-09)

• initial V1_LWT.BLOCK support

• caches metadata for performance

• CLI tool for manipulating images

• supports the seek_mapped seek_unmapped interface for iterating over sparse regions