[Gluster-users] File Corruption when adding bricks to live replica volumes

[Lindsay Mathieson]

Fascinating, thank you.

On 22/01/2016 10:33 PM, Krutika Dhananjay wrote:
> There is no doc to my knowledge. I will write one, now that you 
> pointed it out. ;)
>
> Client-side heals are heals that happen from the GlusterFS client, as 
> part of LOOKUP, sometimes even READ, [F]STAT,  etc.
> You can tell when a client did a heal if a corresponding log message 
> appears in that client's log file (usually the ones with MSGID: 
> 108026, although name heals aren't logged).
> They are enabled by default.
> To disable entry heal from clients for instance, you do #gluster 
> volume set <VOL> cluster.entry-self-heal off
> To disable data self-heal from clients, you do #gluster volume set 
> <VOL> cluster.data-self-heal off
>
> If you want to prevent the client from doing self-heal altogether, you 
> disable all three forms of client healing: data-self-heal, 
> entry-self-heal and metadata-self-heal.
>
> Server side heals are heals that are performed by the self-heal 
> daemon. You will see log messages with MSGID: 108026 in glustershd.log 
> when the self-heal-daemon performs a heal.
> Server side heals happen in the following cases:
> 1) when you execute #gluster volume heal <VOL> full
> 2) when you execute #gluster volume heal <VOL>
> 3) when a brick that was previously down comes back up.
>
> To disable server side heal, you need to disable the self-heal-daemon. 
> You can do that with #gluster volume set <VOL> 
> cluster.self-heal-daemon off
>
> HTH,
> Krutika
> ------------------------------------------------------------------------
>
>     *From: *"Lindsay Mathieson" <lindsay.mathieson at gmail.com>
>     *To: *"Krutika Dhananjay" <kdhananj at redhat.com>
>     *Cc: *"gluster-users" <gluster-users at gluster.org>
>     *Sent: *Friday, January 22, 2016 5:51:01 PM
>     *Subject: *Re: [Gluster-users] File Corruption when adding bricks
>     to live replica volumes
>
>     On 22/01/2016 10:07 PM, Krutika Dhananjay wrote:
>     > Could you do the following:
>     > 1) Disable client-side healing:
>
>
>     Will do. Wasn't aware there were different types of healing - is
>     there
>     client and server side heals? are there any docs on this?
>
>     thanks,
>
>     -- 
>     Lindsay Mathieson
>
>


-- 
Lindsay Mathieson

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