Re: btrfs-find-root duration?

[Chris Murphy <lists@colorremedies.com>]

On Sun, Dec 11, 2016 at 4:30 PM, Markus Binsteiner <makkus@gmail.com> wrote:
>> OK when I do it on a file system with just 14GiB of metadata it's
>> maybe 15 seconds. So a few minutes sounds sorta suspicious to me but,
>> *shrug* I don't have a file system the same size to try it on, maybe
>> it's a memory intensive task and once the system gets low on RAM while
>> traversing the file system it slows done a ton.
>
> Ok, thanks, looks like there is some other issue then as well. The
> process doesn't take up any memory at all, just 100% of one core.
>
> Maybe I'll try to use it with an older version of btrfs-progs, from
> Debian Jessie. Don't think it'll make any difference, but I don't know
> what else to try. At this point I'm more curious than anything else.
> I've got backups for most of my stuff, just a few rogue scripts I'd
> have to re-write. Still, would be nice to get those back.

You might try 'btrfs check' without repairing, using a recent version
of btrfs-progs and see if it finds anything unusual.

Although, are there many snapshots? That would cause the rentention of roots.


-- 
Chris Murphy