Re: [MooseFS-Users] Marking disc for removal - chunkserver gets no more chunks

[Piotr R. K. <pio...@mo...>]

Hi again,

> On 21 Jan 2016, at 11:55 PM, Piotr Robert Konopelko <pio...@mo...> wrote:
> 
>> or either
>> * /data/disc1
>> < /data/disc1
> 
> Yes



Small errata one more time ;)

To make it clear: of course you shouldn't duplicate a drive entry like above,
so e.g. the following example mfshdd.cfg is right:

* /data/disc1
< /data/disc2
> /data/disc3
> /data/disc4
/data/disc5

(Chunks from /data/disc1 are replicated to anywhere in the cluster,
chunks from /data/disk2 are moved to /data/disc3 or /data/disc4,
chunks on /data/disc5 are normally used in the cluster and not touched)


One more note :)
The thing, that you observed and described in your first mail in this topic
(that when you use *, chunks are not replicated to another drives
on the same chunkserver) is normal and very correct.

One of MooseFS principals is not to store more than one copy of chunk
on the same machine (of course because of data safety).



Best regards,

-- 
Piotr Robert Konopelko
MooseFS Technical Support Engineer | moosefs.com <https://moosefs.com/>