mirror_zfs/lib
Allan Jude c7ada64bb6
ddt: dedup table quota enforcement
This adds two new pool properties:
- dedup_table_size, the total size of all DDTs on the pool; and
- dedup_table_quota, the maximum possible size of all DDTs in the pool

When set, quota will be enforced by checking when a new entry is about
to be created. If the pool is over its dedup quota, the entry won't be
created, and the corresponding write will be converted to a regular
non-dedup write. Note that existing entries can be updated (ie their
refcounts changed), as that reuses the space rather than requiring more.

dedup_table_quota can be set to 'auto', which will set it based on the
size of the devices backing the "dedup" allocation device. This makes it
possible to limit the DDTs to the size of a dedup vdev only, such that
when the device fills, no new blocks are deduplicated.

Sponsored-by: iXsystems, Inc.
Sponsored-By: Klara Inc.
Reviewed-by: Alexander Motin <mav@FreeBSD.org>
Reviewed-by: Tony Hutter <hutter2@llnl.gov>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@klarasystems.com>
Signed-off-by: Don Brady <don.brady@klarasystems.com>
Co-authored-by: Don Brady <don.brady@klarasystems.com>
Co-authored-by: Rob Wing <rob.wing@klarasystems.com>
Co-authored-by: Sean Eric Fagan <sean.fagan@klarasystems.com>
Closes #15889
2024-07-25 09:47:36 -07:00
..
libavl cppcheck: explicitly exclude kernel code from userspace checks 2022-05-10 10:20:55 -07:00
libefi Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN. 2024-05-10 08:47:21 -07:00
libicp icp: remove skein module 2024-05-31 15:13:39 -07:00
libnvpair libspl: lift backtrace into a separate file 2024-05-14 09:48:45 -07:00
libshare Add support for multiple lines to the sharenfs property for FreeBSD (#16338) 2024-07-23 16:38:19 -07:00
libspl spl: fix compilation without HAVE_BACKTRACE 2024-05-29 10:51:01 -07:00
libtpool tpool_dispatch: fail if it cannot start at least 1 worker. 2024-05-14 09:35:48 -07:00
libunicode cppcheck: explicitly exclude kernel code from userspace checks 2022-05-10 10:20:55 -07:00
libuutil libspl: lift backtrace into a separate file 2024-05-14 09:48:45 -07:00
libzdb Provide macros for setting and getting blkptr birth times 2024-03-25 15:01:54 -07:00
libzfs ddt: dedup table quota enforcement 2024-07-25 09:47:36 -07:00
libzfs_core zdb: detect cachefile automatically otherwise force import 2024-06-03 16:28:43 -07:00
libzfsbootenv nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
libzpool libzpool: set thread names 2024-05-01 10:51:44 -07:00
libzstd cppcheck: explicitly exclude kernel code from userspace checks 2022-05-10 10:20:55 -07:00
libzutil libzfs: use zfs_strerror() in place of strerror() 2024-01-29 09:54:57 -08:00
Makefile.am libzdb: Initial breakout of libzdb 2024-02-05 10:00:41 -08:00