freebsd-nq/sys/geom
Conrad Meyer eefd8f96fb geom_uzip(4), mkuzip(8): Add Zstd image mode
The Zstd format bumps the CLOOP major number to 4 to avoid incompatibility
with older systems.  Support in geom_uzip(4) is conditional on the ZSTDIO
kernel option, which is enabled in amd64 GENERIC, but not all in-tree
configurations.

mkuzip(8) was modified slightly to always initialize the nblocks + 1'th
offset in the CLOOP file format.  Previously, it was only initialized in the
case where the final compressed block happened to be unaligned w.r.t.
DEV_BSIZE.  The "Fake" last+1 block change in r298619 means that the final
compressed block's 'blen' was never correct unless the compressed uzip image
happened to be BSIZE-aligned.  This happened in about 1 out of every 512
cases.  The zlib and lzma decompressors are probably tolerant of extra trash
following the frame they were told to decode, but Zstd complains that the
input size is incorrect.

Correspondingly, geom_uzip(4) was modified slightly to avoid trashing the
nblocks + 1'th offset when it is known to be initialized to a good value.
This corrects the calculated final real cluster compressed length to match
that printed by mkuzip(8).

mkuzip(8) was refactored somewhat to reduce code duplication and increase
ease of adding other compression formats.

  * Input block size validation was pulled out of individual compression
    init routines into main().

  * Init routines now validate a user-provided compression level or select
    an algorithm-specific default, if none was provided.

  * A new interface for calculating the maximal compressed size of an
    incompressible input block was added for each driver.  The generic code
    uses it to validate against MAXPHYS as well as to allocate compression
    result buffers in the generic code.

  * Algorithm selection is now driven by a table lookup, to increase ease of
    adding other formats in the future.

mkuzip(8) gained the ability to explicitly specify a compression level with
'-C'.  The prior defaults -- 9 for zlib and 6 for lzma -- are maintained.
The new zstd default is 9, to match zlib.

Rather than select lzma or zlib with '-L' or its absense, respectively, a
new argument '-A <algorithm>' is provided to select 'zlib', 'lzma', or
'zstd'.  '-L' is considered deprecated, but will probably never be removed.

All of the new features were documented in mkuzip.8; the page was also
cleaned up slightly.

Relnotes:	yes
2019-08-13 23:32:56 +00:00
..
bde Annotate geom modules with MODULE_VERSION 2018-04-10 19:18:16 +00:00
cache GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
concat GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
eli GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
gate GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
journal GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
label GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
linux_lvm GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
mirror GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
mountver GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
multipath Use sbuf_cat() in GEOM confxml generation. 2019-06-19 15:36:02 +00:00
nop GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
part Use sbuf_cat() in GEOM confxml generation. 2019-06-19 15:36:02 +00:00
raid GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
raid3 GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
sched GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
shsec GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
stripe GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
uzip geom_uzip(4), mkuzip(8): Add Zstd image mode 2019-08-13 23:32:56 +00:00
vinum GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
virstor GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
zero Annotate geom modules with MODULE_VERSION 2018-04-10 19:18:16 +00:00
geom_bsd_enc.c sys/geom: adoption of SPDX licensing ID tags. 2017-11-27 15:17:37 +00:00
geom_ccd.c Annotate geom modules with MODULE_VERSION 2018-04-10 19:18:16 +00:00
geom_ctl.c Define a constant for the maximum number of GEOM_CTL arguments. 2019-02-20 17:07:08 +00:00
geom_ctl.h Define a constant for the maximum number of GEOM_CTL arguments. 2019-02-20 17:07:08 +00:00
geom_dbg.h GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
geom_dev.c List-ify kernel dump device configuration 2019-05-06 18:24:07 +00:00
geom_disk.c Use sbuf_cat() in GEOM confxml generation. 2019-06-19 15:36:02 +00:00
geom_disk.h Extend stripeoffset and stripesize of GEOMs from u_int to off_t 2018-10-27 16:14:42 +00:00
geom_dump.c Use sbuf_cat() in GEOM confxml generation. 2019-06-19 15:36:02 +00:00
geom_event.c Instrument "boot holds" for the benefit of the TSLOG framework. These 2017-12-31 09:23:52 +00:00
geom_flashmap.c Remove NAND and NANDFS support 2019-06-25 04:50:09 +00:00
geom_flashmap.h Support device-independent labels for geom_flashmap slices. 2019-03-24 19:11:45 +00:00
geom_int.h Use sbuf_cat() in GEOM confxml generation. 2019-06-19 15:36:02 +00:00
geom_io.c GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
geom_kern.c Optimize kern.geom.conf* sysctls. 2019-06-18 21:05:10 +00:00
geom_map.c Annotate geom modules with MODULE_VERSION 2018-04-10 19:18:16 +00:00
geom_redboot.c Extend stripeoffset and stripesize of GEOMs from u_int to off_t 2018-10-27 16:14:42 +00:00
geom_slice.c sys/geom: adoption of SPDX licensing ID tags. 2017-11-27 15:17:37 +00:00
geom_slice.h sys/geom: adoption of SPDX licensing ID tags. 2017-11-27 15:17:37 +00:00
geom_subr.c GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
geom_vfs.c GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
geom_vfs.h sys/geom: adoption of SPDX licensing ID tags. 2017-11-27 15:17:37 +00:00
geom.h GEOM: Reduce unnecessary log interleaving with sbufs 2019-08-07 19:28:35 +00:00
notes