I use rsync snapshots for backups on my workstation. Every 15 minutes during the workday. Eventually the partition where I'm keeping my snapshots will fill up. Rather than just blindly deleting the oldest snapshots... I thought a better solution might be to following:
1. Convert the snapshot dir's datetime name to epoch
2. In the trip script apply the epochs to a parabolic function: y = x^2
3. Delete snapshot dirs which don't conform to the parabolic function... until the partition is ~70%
The majority of this script is simple enough... but I'm struggling with the parabolic function part. Can someone offer help or advise?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||