mirror_zfs/lib
Allan Jude dc95911d21
zfs list: Allow more fields in ZFS_ITER_SIMPLE mode
If the fields to be listed and sorted by are constrained to those
populated by dsl_dataset_fast_stat(), then zfs list is much faster,
as it does not need to open each objset and reads its properties.

A previous optimization by Pawel Dawidek
(0cee24064a) took advantage
of this to make listing snapshot names sorted only by name much faster.

However, it was limited to `-o name -s name`, this work extends this
optimization to work with:
  - name
  - guid
  - createtxg
  - numclones
  - inconsistent
  - redacted
  - origin
and could be further extended to any other properties supported by
dsl_dataset_fast_stat() or similar, that do not require extra locking
or reading from disk.

This was committed before (9a9e2e343dfa2af28bf7910de77ae73aa006de62),
but was reverted due to a regression when used with an older kernel.

If the kernel does not populate zc->zc_objset_stats, we now fallback
to getting the properties via the slower interface, to avoid problems
with newer userland and older kernels.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Allan Jude <allan@klarasystems.com>
Closes #14110
2022-12-13 17:27:54 -08:00
..
libavl cppcheck: explicitly exclude kernel code from userspace checks 2022-05-10 10:20:55 -07:00
libefi Fix multiplication converted to larger type 2022-10-28 09:30:37 -07:00
libicp Introduce BLAKE3 checksums as an OpenZFS feature 2022-06-08 15:55:57 -07:00
libnvpair Fix GCC 12 compilation errors 2022-11-30 13:45:53 -08:00
libshare Ubuntu 22.04 integration: Cppcheck 2022-11-18 11:26:50 -08:00
libspl freebsd: simplify MD isa_defs.h 2022-11-07 15:55:37 -08:00
libtpool Add <limits.h> header 2022-11-28 13:24:17 -08:00
libunicode cppcheck: explicitly exclude kernel code from userspace checks 2022-05-10 10:20:55 -07:00
libuutil libuutil: deobfuscate internal pointers 2022-11-03 09:57:05 -07:00
libzfs zfs list: Allow more fields in ZFS_ITER_SIMPLE mode 2022-12-13 17:27:54 -08:00
libzfs_core Don't leak packed recieved proprties 2022-11-29 09:51:35 -08:00
libzfsbootenv Fix unchecked return values and unused return values 2022-09-23 16:52:03 -07:00
libzpool Add <limits.h> header 2022-11-28 13:24:17 -08:00
libzstd cppcheck: explicitly exclude kernel code from userspace checks 2022-05-10 10:20:55 -07:00
libzutil Aligned free for aligned alloc 2022-10-26 15:08:31 -07:00
Makefile.am autoconf: use include directives instead of recursing down lib 2022-05-10 10:18:11 -07:00