[dm-devel] [PATCH 1/2] multipath-tools: change default failback from manual to immediate
Xose Vazquez Perez
xose.vazquez at gmail.com
Mon Aug 1 01:58:08 UTC 2016
On 07/28/2016 04:03 PM, Hannes Reinecke wrote:
> On 07/11/2016 11:12 PM, Xose Vazquez Perez wrote:
>> Default value is: manual
>> 1 .pgfailback = 15,
>> 2 .pgfailback = 30,
>> 24 .pgfailback = FAILBACK_UNDEF,
>> 50 .pgfailback = -FAILBACK_IMMEDIATE,
>>
>> manual is not used by any device.
>>
>> Cc: Christophe Varoqui <christophe.varoqui at opensvc.com>
>> Cc: device-mapper development <dm-devel at redhat.com>
>> Signed-off-by: Xose Vazquez Perez <xose.vazquez at gmail.com>
>> ---
>> libmultipath/defaults.h | 2 +-
>> libmultipath/hwtable.c | 50 ----------------------------------------------
>> multipath/multipath.conf.5 | 2 +-
>> 3 files changed, 2 insertions(+), 52 deletions(-)
>>
> 'immediate' fallback only makes sense if the device has a working
> prioritizer _and_ supports a 'preferred path'.
Then there are, at least, seven misconfigured devices.
What devices have support for referred_path?
Based on: guess???
PRIO_ALUA - YES
PRIO_CONST - NO
PRIO_EMC - YES
PRIO_HDS - YES
PRIO_HP_SW - NO
PRIO_ONTAP - YES
PRIO_RDAC - YES
Is there a hint anywhere?
> None of which can be assumed for an unknown device, so this patch
> will break automatic configuration.
As I said in my previous e-mail I don't believe in magic.
But this is up to you(plural: Christophe, Hannes, Benjamin, ...)
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