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. 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. --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
