[libvirt] [PATCH] virStorageVolWipe: Document that wiping journaled FS is useless

[Vasiliy Tolstov]

2015-12-21 13:39 GMT+03:00 Michal Privoznik <mprivozn at redhat.com>:
> I'm no expert but I think fstrim is no help here - it merely reclaims
> free space on a disk, but raw data is still accessible. At least can be
> if disk does not implement DRAT (Deterministic Read After Trim) (read of
> zeroes that is).
>
> But better safe than sorry, right? So maybe we should issue fstrim after
> all.

Yes, also trim very useful on ssd =), But i don't check does this
helps or not, this is only theory.


-- 
Vasiliy Tolstov,
e-mail: v.tolstov at selfip.ru