Once upon a time, Robert Scheck <rob...@fedoraproject.org> said:
> On Sun, 18 Feb 2018, Richard W.M. Jones wrote:
> > There's also a more serious data safety issue: Although this probably
> > works OK for ext2 since that format is frozen in time, it probably
> > corrupts ext4 filesystems containing features that it doesn't know
> > about.
> > 
> > It is for these reasons that I don't think you should use this package
> > and I intend to retire it unless anyone says otherwise.
> 
> Last time I used it (a year ago?) it worked properly for ext3 and ext4, but
> on RHEL rather on Fedora. Not sure which features you are talking about in
> detail, but bumping zerofree from 1.0.3 to 1.1.0 would add 64 bit block no.
> support at least...

Also note that zerofree does something different than fstrim; fstrim
only works on block devices that support discard, while zerofree will
work on any type of device.

-- 
Chris Adams <li...@cmadams.net>
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