fstrim and subvolumes.

fstrim and subvolumes.

[Christian]

Hi,

I use a script to run scheduled fstrims on my SSD. I have a small /boot 
partition ext4 and a large btrfs partition / with /home as a subvolume of /

My question is simple if I run "fstrim /" will /home be trimmed as well 
or will i have to run "fstrim /home" also to get the whole partition 
trimmed?

-- 
//Christian

Re: fstrim and subvolumes.

[Timofey Titovets]

when you run fstrim, you give path to file system, fstrim talk with
file system and filesystem call trim for whole free space on it
filesystem.
As you say above, home and root, is a subvolume on one big btrfs
filesystem, then if you call fstrim on any path in fs, you will trim
whole free space on this fs.

*Enough call it once for '/', sorry for long and ugly answer

2015-05-07 0:36 GMT+03:00 Christian <cdysthe@gmail.com>:
> Hi,
>
> I use a script to run scheduled fstrims on my SSD. I have a small /boot
> partition ext4 and a large btrfs partition / with /home as a subvolume of /
>
> My question is simple if I run "fstrim /" will /home be trimmed as well or
> will i have to run "fstrim /home" also to get the whole partition trimmed?
>
> --
> //Christian
>
>
> --
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-- 
Have a nice day,
Timofey.