Re: [PATCH] improve documentation of snapshot unaware defrag

[Duncan <1i5t5.duncan@cox.net>]

Christoph Anton Mitterer posted on Sun, 27 Dec 2015 04:03:27 +0100 as
excerpted:

[Rewrapped here but all added lines.]

> +WARNING: Defragmenting with Linux kernel versions < 3.9 or ≥ 3.14-rc2
> as well as 
> +with Linux stable kernel versions ≥ 3.10.31, ≥ 3.12.12 or ≥
> 3.13.4 will break up 
> +the ref-links of CoW data (for example files copied with 
> `cp --reflink`,
> +snapshots or de-duplicated data).
> +This may cause considerable increase of space usage depending on the
> broken up +ref-links.

Thanks.  I had looked at that a few times and thought it needed updated, 
but I think it hadn't reached my pain threshold yet[1], so I hadn't yet 
posted about it.

Glad it reached someone's pain threshold. =:^)

---
[1] Pain threshold:  Or more like, I was always doing something else at 
the time, which is probably everybody else's excuse too.  But by contrast 
it can be noted that I posted right away when I noticed the mkfs.btrfs 
manpage totally lost raid1 mode with one update, because I use it, 
regardless of what else I was doing.  I guess that must have hit my pain 
threshold...

-- 
Duncan - List replies preferred.   No HTML msgs.
"Every nonfree program has a lord, a master --
and if you use the program, he is your master."  Richard Stallman