[pve-devel] applied: [PATCH docs v1] Add section with more infos about ZFS RAID levels

[Thomas Lamprecht]

On 21.07.20 14:58, Aaron Lauterer wrote:
> This new section explains the performance and failure properties of
> mirror and RAIDZ VDEVs as well as the "unexpected" higher space usage by
> ZVOLs on a RAIDZ.
> 
> Signed-off-by: Aaron Lauterer <a.lauterer at proxmox.com>
> ---
> 
> draft->v1:
> * incorporate Stoikos suggestions [0]
> * went with lower case vdev as this is the way it is used in the zpool
>   manpage
> * used N-P(arity) in the RAIDZ sizing part
> * added a short explanation of vdevs at the beginning and mention the
>   zpool manpage
> 
> 
> This is a first version to explain the performance characteristics of the
> different RAID levels / vdev types, as well as their failure behavior.
> 
> Additionally it explains the situation why a VM disk (ZVOL) can end up
> using quite a bit more space than expected when placed on a pool made of
> RAIDZ VDEVs.
> 
> The motivation behind this is, that in the recent past, these things
> came up quite a bit. Thus it would be nice to have some documentation
> that we can link to and having it in the docs might help users to make
> an informed decision from the start.
> 
> I hope I did not mess up any technical details and that it is
> understandable enough.
> 
> [0] https://lists.proxmox.com/pipermail/pve-devel/2020-July/044453.html
> 
>  local-zfs.adoc | 95 ++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 95 insertions(+)
> 
>

applied, thanks!