On Wed, Sep 28, 2016 at 1:02 PM, Allan Jude <allanj...@freebsd.org> wrote: > On 2016-09-27 01:58, Warner Losh wrote: >> On Mon, Sep 26, 2016 at 11:06 PM, O'Connor, Daniel <dar...@dons.net.au> >> wrote: >>> >>>> On 27 Sep 2016, at 14:28, Warner Losh <i...@bsdimp.com> wrote: >>>> dd of 2MB of zeros to the start and end of the disk. That will destroy >>>> pretty much everything. For SSDs, sometimes you can do the same with >>>> TRIMs only faster (other times they are slower or unreliable). >>> >>> Yeah, but it would be nicer to not have to know that particular magic >>> incarnation :) >> >> Disk formatting has always been 3 parts magic, 2 parts luck and 1 part skill >> :) >> >> It doesn't fit nicely into geom because metadata can live elsewhere. >> >> I forgot to add the caveat not to try this on a disk that is part of a >> RAID volume. >> >> Warner >> _______________________________________________ >> freebsd-current@freebsd.org mailing list >> https://lists.freebsd.org/mailman/listinfo/freebsd-current >> To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org" >> > > I wonder if this issue is related at all to the new 'auto resize' gpart > bits. That leaves the 'uncommitted' transaction pending, and may require > a 'gpart undo' before the other commands will work correctly. > > I wonder if something like 'zpool labelclear', but for gpart would be > useful, that just nukes the first and last few MB of the disk. I know in > the installer we jump through a number of hoops to try to clear out old > stuff, and having one command would be better.
I thought the auto resize stuff was backed out, precisely because it left bogons around... Warner _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
