[dm-devel] [PATCH 0/2] multipath-tools: add more ALUA info to docs

[Martin Wilck]

On Thu, 2021-03-25 at 23:34 +0100, Xose Vazquez Perez wrote:
> Xose Vazquez Perez (2):
>   multipath-tools: add info about how to enable ALUA in Huawei
> OceanStor arrays
>   multipath-tools: add more info about ALUA for CLARiiON arrays
> 
>  README.alua | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> Cc: Martin Wilck <mwilck at suse.com>
> Cc: Benjamin Marzinski <bmarzins at redhat.com>
> Cc: Christophe Varoqui <christophe.varoqui at opensvc.com>
> Cc: DM-DEVEL ML <dm-devel at redhat.com>
> Signed-off-by: Xose Vazquez Perez <xose.vazquez at gmail.com>

Reviewed-by: Martin Wilck <mwilck at suse.com>

> ---
> BTW, some "new" generations of fully symmetrical Active-Active arrays
> support ALUA
> (by default ???), but in the multipath-tools hwtable they are defined
> as "multibus":
> - IBM DS8000, since ???
> - IBM XIV, since Gen2 with microcode 10.2.1
> - EMC SYMMETRIX, since VMAX 3 with HYPERMAX OS 5977.811.784

Almost every (SCSI) array I've seen lately supports ALUA (even though
some seem to interpret the standard quite freely).

In general, we rely on the vendors for these matters. But if you have
reliable information, I support changing this to "group_by_prio". 

Martin