On Tue, Jun 19, 2018 at 10:57 AM, Willem Jan Withagen <wjw@xxxxxxxxxxx> wrote: > On 19-6-2018 16:31, Alfredo Deza wrote: >> It is a compression technology >> https://www.redhat.com/en/blog/look-vdo-new-linux-compression-layer >> >> https://en.wikipedia.org/wiki/Permabit > > Ah, oke thanx. > I do not track all things on Linux. This missed radar. > > ZFS filesystems and volumes natively do know compression. Yep, I was aware of this. I **love** ZFS (I use smartos at home) :) > > Now the question arisses, which is I needed to fix for FreeBSD, is: > Does VDO guarantee reservations for {posix_}fallocate > otherwise Ceph could be lied too. > > FreeBSD choose to return an error on posix_fallocate on zfs things. > So I needed to tweak there, and manually allocate space. > It is not yet perfect, but atleast is does try to reserve the storage. Not sure, you might have better luck asking this in ceph-devel > > --WjW > > >> On Tue, Jun 19, 2018 at 10:26 AM, Willem Jan Withagen <wjw@xxxxxxxxxxx> wrote: >>> Hi, >>> >>> Can you explain to me what a VDO-device is? >>> Googleing does not get me anywhere. >>> >>> --WjW >>> > -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
