From: Wols Lists <antlists@youngman.org.uk>
To: WNSDEV <pete@wnsdev.com>, linux-raid@vger.kernel.org
Subject: Re: Linux raid wiki
Date: Fri, 23 Sep 2016 19:43:10 +0100 [thread overview]
Message-ID: <57E577BE.8080101@youngman.org.uk> (raw)
In-Reply-To: <002a01d215c0$e3f20980$abd61c80$@wnsdev.com>
Thanks.
My understanding of role numbers is that they are the order of the disks
in which stripes are written, so role 0 has the first stripe, role 1 the
second, etc etc.
This is *normally* irrelevant, but should the array ever get trashed,
the disks need to be listed *in* *that* *order* in a new --create statement.
Can someone - Neil? Phil? - please confirm I've understood that
correctly before I update anything ...
(and I will be posting updates to the list - anything I'm not sure of I
will be asking here to check I get it right :-)
Cheers,
Wol
On 23/09/16 18:35, WNSDEV wrote:
> Hi Wol,
>
> Thanks for your work on the wiki... I'm sending a virtual bouquet. I've been tracking down an issue regarding role numbers which I've posted to the list http://marc.info/?l=linux-raid&m=147439325405842&w=2. In that process I've come across other postings that say information in the wiki is incorrect so maybe this is an opportunity to update this part of the wiki.
>
> According to https://raid.wiki.kernel.org/index.php/Mdstat we find:
>
> "The raid role numbers [#] following each device indicate its role, or function, within the raid set. Any device with "n" or higher are spare disks. 0,1,..,n-1 are for the working array. Notice that there is no device 3."
>
> But according to the following two postings, http://www.spinics.net/lists/raid/msg44491.html and http://www.spinics.net/lists/raid/msg49766.html
> the information in the wiki about the numbers in brackets (role numbers ) is wrong.
>
> Thanks,
> Peter Sangas
>
next prev parent reply other threads:[~2016-09-23 18:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-22 23:31 Linux raid wiki Wols Lists
2016-09-23 17:35 ` WNSDEV
2016-09-23 18:43 ` Wols Lists [this message]
2016-09-23 19:02 ` Peter Sangas
2016-09-24 3:38 ` Phil Turmel
2016-09-24 13:18 ` Wols Lists
2016-09-26 14:01 ` Phil Turmel
2016-09-26 16:44 ` Wols Lists
2016-09-26 21:19 ` Phil Turmel
2016-09-26 21:37 ` Wols Lists
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