Hi folks,
A new version erofs-utils 1.3 is available at:
git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs-utils.git tags/v1.3
It mainly includes the following changes:
- support new big pcluster feature together with Linux 5.13+;
- optimize buffer allocation logic (Hu Weiwen);
- optimize build performance for large directories (Hu Weiwen);
- add support to override uid / gid (Hu Weiwen);
- add support to adjust lz4 history window size (Huang Jianan);
- add a manual for erofsfuse;
- add support to limit max decompressed extent size;
- various bugfixes and cleanups;
One notable update is that it now supports EROFS big pcluster [1][2],
which allows compressing variable-sized data into more than 1 fs block
by using fixed-sized output compression [3]. It can be used for some
(sub)-files with specific data access patterns (such as oneshot data
segments which need better compression ratio and thus better sequential
performance.)
Note that users can write their own per-(sub)files big pcluster
strategies to adjust pclustersize in time according to file type static
analysis or historical tracing data in z_erofs_get_max_pclusterblks().
And default strategies will be developed and built-in laterly in the
future.
btw, I've heard more in-market products shipped with EROFS, for example
OPPO [4] and Coolpad [5] with some public news plus more in-person
contacts from time to time. It's always worth trying and feedback or
contribution is welcomed.
[1] https://www.kernel.org/doc/html/latest/filesystems/erofs.html
[2] https://lore.kernel.org/r/[email protected]
[3] https://www.usenix.org/system/files/atc19-gao.pdf
[4] https://new.qq.com/omn/20210312/20210312A0D9HT00.html
[5] https://hunchmag.com/helio-g80-erofs-48-mp-arcsoft-and-cool-os-coolpad-cool-2-smartphone-announced/
Thanks,
Gao Xiang