[PATCH v7 0/2] erofs-utils: support tail-packing inline compressed data

Gao Xiang hsiangkao at linux.alibaba.com
Tue Dec 21 20:53:07 AEDT 2021


On Tue, Dec 21, 2021 at 05:43:19PM +0800, Gao Xiang wrote:
> Hi folks,
> 
> This is a follow-up of previous v6 Yue Hu's patchset. It implements
> tail-packing inline for compressed files. In particular, called
> tail pcluster inline.
> 
> Here is some evaluation of Linux 5.10.87 source code (75368 inodes):
> linux-5.10.87 (erofs, uncompressed)		972570624
> 
> linux-5.10.87 (erofs, lz4hc,9 4k tailpacking)	391696384
> linux-5.10.87 (erofs, lz4hc,9 8k tailpacking)	368807936
> linux-5.10.87 (erofs, lz4hc,9 16k tailpacking)	345649152
> 
> linux-5.10.87 (erofs, lz4hc,9 4k vanilla)	416079872
> linux-5.10.87 (erofs, lz4hc,9 8k vanilla)	395493376
> linux-5.10.87 (erofs, lz4hc,9 16k vanilla)	345649152

Sorry this line should be:
linux-5.10.87 (erofs, lz4hc,9 16k vanilla)	383213568

Also I forgot to mention the usage:
mkfs.erofs -zlz4hc -Eztailpacking foo.erofs.img foo/

Thanks,
Gao Xiang


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