On Mon, Sep 04, 2017 at 10:33:40PM +0200, A L wrote:
> On 9/4/2017 5:11 PM, Adam Borowski wrote:
> > Hi!
> > Here's an utility to measure used compression type + ratio on a set of files
> > or directories: https://github.com/kilobyte/compsize
>
> Great tool. Just tried it on some of my backup snapshots.
>
> # compsize portage.20170904T2200
> 142432 files.
> all 78% 329M/ 422M
> none 100% 227M/ 227M
> zlib 52% 102M/ 195M
>
> # du -sh portage.20170904T2200
> 787M portage.20170904T2200
>
> # btrfs fi du -s portage.20170904T2200
> Total Exclusive Set shared Filename
> 271.61MiB 6.34MiB 245.51MiB portage.20170904T2200
>
> Interesting results. How do I interpret them?
I've added some documentation; especially in the man page.
(Sorry for not pushing this earlier, Timofey went wild on this tool and I
wanted to avoid conflicts.)
> Compsize also doesn't seem to like some non-standard files and throws an
> error (even though they should be ignored?):
>
> # compsize usb-backup/volumes/root/root.20170727T2321/
> open("usb-backup/volumes/root/root.20170727T2321//tmp/screen/S-root/2757.pts-1.e350"):
> No such device or address
>
> # dir
> usb-backup/volumes/root/root.20170727T2321//tmp/screen/S-root/2757.pts-1.e350
> srwx------ 1 root root 0 Dec 31 2015
> usb-backup/volumes/root/root.20170727T2321//tmp/screen/S-root/2757.pts-1.e350=
Fixed.
Meow!
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