Bug#721360: blockdev-wipe can be very slow

2013-09-10 Thread Ben Hutchings
On Tue, 2013-09-10 at 03:31 -0700, ian_br...@fastmail.net wrote: > wrote: > > > I have to wonder why this is so slow. We should be able to write > > about 100 MB/s sequentially to a recent HD, so 750 GB would take > > about 2 hours and not 36 hours. > > I chose an encrypted swap volume, of size

Bug#721360: blockdev-wipe can be very slow

2013-09-10 Thread ian_bruce
wrote: > I have to wonder why this is so slow. We should be able to write > about 100 MB/s sequentially to a recent HD, so 750 GB would take > about 2 hours and not 36 hours. I chose an encrypted swap volume, of size 16GB. The Debian installer took close to an hour to wipe this. This result is