mirror_zfs/lib/libzfs
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
..
os Replace P2ALIGN with P2ALIGN_TYPED and delete P2ALIGN. 2024-05-10 08:47:21 -07:00
.gitignore Clean up lib dependencies 2020-07-10 14:26:00 -07:00
libzfs_changelist.c Add '-u' - nomount flag for zfs set 2023-10-02 16:58:54 -07:00
libzfs_config.c Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
libzfs_crypto.c libzfs: use zfs_strerror() in place of strerror() 2024-01-29 09:54:57 -08:00
libzfs_dataset.c Overflowing refreservation is bad 2024-04-29 11:32:49 -07:00
libzfs_diff.c libzfs: use zfs_strerror() in place of strerror() 2024-01-29 09:54:57 -08:00
libzfs_impl.h nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
libzfs_import.c Fix "out of memory" error 2024-01-12 12:35:29 -08:00
libzfs_iter.c libzfs: add v2 iterator interfaces 2023-04-10 11:53:02 -07:00
libzfs_mount.c Better control the thread pool size when mounting datasets 2024-05-14 09:36:21 -07:00
libzfs_pool.c ddt: dedup table quota enforcement 2024-07-25 09:47:36 -07:00
libzfs_sendrecv.c Fix printf typo for zfs receive -cv (#16295) 2024-07-17 17:18:12 -07:00
libzfs_status.c nvpair: Constify string functions 2023-03-14 15:25:50 -07:00
libzfs_util.c ddt: dedup table quota enforcement 2024-07-25 09:47:36 -07:00
libzfs.abi ddt: dedup table quota enforcement 2024-07-25 09:47:36 -07:00
libzfs.pc.in Spruce up pkg-config files for libzfs/libzfs_core 2020-09-04 11:11:18 -07:00
libzfs.suppr Library ABI tracking with abigail 2020-11-17 09:18:52 -08:00
Makefile.am libzfs: sendrecv: send_progress_thread: handle SIGINFO/SIGUSR1 2023-08-08 09:35:35 -07:00
THIRDPARTYLICENSE.openssl Fix typos in lib/ 2019-09-02 17:53:27 -07:00
THIRDPARTYLICENSE.openssl.descrip Encryption patch follow-up 2017-10-11 16:54:48 -04:00