From mboxrd@z Thu Jan 1 00:00:00 1970 From: Artur Paszkiewicz Subject: Re: mdadm Consistency Policy initialization Date: Mon, 24 Apr 2017 12:07:44 +0200 Message-ID: References: <9b041a85-7d61-75c8-7fbf-857e095ab838@gmail.com> <8c3ddfa5-2069-b2e2-40c6-e1ec14b2461f@intel.com> <2ca923fa-c147-f8c9-2399-f3a0e0d1721a@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <2ca923fa-c147-f8c9-2399-f3a0e0d1721a@gmail.com> Sender: linux-raid-owner@vger.kernel.org To: Jes Sorensen Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids On 04/20/2017 06:08 PM, Jes Sorensen wrote: > On 04/19/2017 06:29 AM, Artur Paszkiewicz wrote: >> On 04/18/2017 06:50 PM, Jes Sorensen wrote: >>> Hi Artur, >>> >>> In 5308f11727b889965efe5ac0e854d197c2b51f6d you introduced struct mdinfo: enum consistency_policy, but in mdadm.c you initialize it to UnSet which isn't part of the enum. >>> >>> Is there any actual difference between CONSISTENCY_POLICY_UNKNOWN and UnSet? It seems suboptimal to mix and match within the enum like this, and if CONSISTENCY_POLICY_UNKNOWN does the job, couldn't we just initialize with that? >> >> Hi Jes, >> >> The "enum consistency_policy" and "mapping_t consistency_policies[]" >> represent values that can appear in sysfs. md/consistency_policy can be >> "unknown" when the array is inactive. On the other hand, UnSet just >> means that the --consistency-policy= parameter was not provided by the >> user. I wanted to differentiate between these two cases. If you think >> this is redundant I can change it and use CONSISTENCY_POLICY_UNKNOWN >> instead, this should be straightforward. > > Hi Artur, > > I made some changes to map_name() and noticed that you already there default to CONSISTENCY_POLICY_UNKNOWN if it returns UnSet in sysfs_read(). However given that you do a lot of checks manually outside of sysfs.c, I dind't change the code there for now. I think we the change I made to map_name() it should be possible to simply a bunch of that checking code. Hi Jes, It does seem to be better this way. I'll send a patch that removes using UnSet from all consistency policy related places soon. Thanks, Artur