Whamcloud Community JIRA

[LU-14170] Update ZFS version to 2.0.0

Related — Wed, 9 Dec 2020 18:03:44 +0000

https://github.com/openzfs/zfs/releases/tag/zfs-2.0.0

Major New Features

Sequential resilver - The sequential resilver feature can rebuild a failed mirror vdev in a fraction of the time it would take a traditional healing resilver. Full redundancy is restored as quickly as possible and then the pool is automatically scrubbed to verify all of the data checksums. #10349

Persistent L2ARC - This feature makes the L2ARC cache device persistent across reboots thereby eliminating the usual cache warmup time normally needed after importing your pool. #9582

ZStandard compression - ZStandard is a modern, high performance, general compression algorithm which provides similar or better compression levels to GZIP, but with much better performance. ZStandard provides a large selection of compression levels to allow a storage administrator to select the preferred performance/compression trade-off. #10278

Redacted zfs send/receive - Redacted streams allow users to send subsets of their data to a target system. This allows users to save space by not replicating unimportant data within a given dataset or to selectively exclude sensitive information. #7958

Notable Changes

Added fallocate(mode-0/2) compatibility to preallocate space. #10408

Reorganized the zfs and zpool man pages by splitting out each subcommand in to its own page. #9559 #9564

Enabled the systemd zfs-mount-generator by default on Linux. #7329 #8848

More relevant and useful ZED syslog entries #10967 #10861

Provided pam module for automatically loading zfs encryption keys for home datasets. #9903

Support for inheriting and setting user properties in channel programs. #9738 #9950

Improved bootloader support. #10009 #8627 #10937

Optionally colorized zpool status output. #9340

Performance

Faster clone deletion and background freeing with zfs destroy. #8416 #10000 #10034

Faster zfs send / zfs receive performance for small record sizes. #10067 #10099

Improved zfs share scalability. #10300 #10688 #10747

More efficient ARC and memory management. #9181 #9197 #10496 #10575 #10576 #10600 #10618 #10701

Improved write performance for heavily fragmented pools. #8442

Optimized AES-GCM encryption performance. #9749 #10029

SIMD optimizations. #9517 #9539