[PVE-User] Ceph Disk Usage/Storage

Wolfgang Link w.link at proxmox.com
Wed Dec 14 13:00:16 CET 2016


You pool size is 3*400 GB so 1.2GB is correct, but your config say 3/2.
This means you have 3 copies of every pg(Placement Group) and min 2 pg
are needed to operate correct.

This means if you write 1GB you lose 3GB of free storage.


On 12/14/2016 12:14 PM, Daniel wrote:
> Hi there,
> 
> i created a Ceph File-System with 3x 400GB
> In my config i said 3/2 that means that one of that disks are only for an faulty issue (like raid5)
> 3 HDDs Max and 2 HDDs Minimum
> 
> In my System-Overview u see that i have 1.2TB Free-Space which cant be correct.
> 
> This is what the CLI command shows me:
> 
> POOLS:
>     NAME     ID     USED     %USED     MAX AVAIL     OBJECTS 
>     ceph     2         0         0          441G           0 
> 
> But as i understand it correctly max Avail GB must be round about 800GB
> 
> Cheers
> 
> Daniel
> 
> 
> 
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