Re: healing of big files

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Are you using the 'virt' group for setting all optimal settings for virtualization ?

The groups' settings  are in /var/lib/gluster/groups  on each node.


Best Regards,
Strahil NikolovOn Jan 14, 2020 10:57, vlad f halilov <vfh@xxxxxxxxx> wrote:
>
> Hi there. I'm trying to deploy replicated 2+1 cluster with gluster 5.5.1 
> (debian 10) as vm image storage for libvirt, but have an issue with 
> healing disconnected node. Example: 
>
> 1) node4 + node5 - storages with one brick, node2 - arbiter. 
> 2) Creating volume with defaults, and making a file (5Gb) in mounted fs, 
> running 'dd bs=1024k count=5000 if=/dev/zero of=/mnt/zero' 
> 3) Now restarting node5, and executing 'echo >>/mnt/zero' on node2. So 
> file /mnt/zero become little changed and need to heal. 
>
> # gluster volume heal vmpool info 
>
> Brick node5:/data/glusterfs/vmpool/brick1/brick 
> Status: enpoint not connected 
> Number of entries: - 
>
> Brick node4:/data/glusterfs/vmpool/brick1/brick 
> /zero 
> Status: Connected 
> Number of entries: 1 
>
> Brick node2:/data/glusterfs/vmpool/brick1/brick 
> /zero 
> Status: Connected 
> Number of entries: 1 
>
>
> 4) After node5 has reconnected, healing procedure has begun, but looks 
> that about to entire file have transferred from synced node to unsynced, 
> instead just changed blocks. (ifconfig on node5 showed '        RX 
> packets 269790  bytes 5293724127 (4.9 GiB)) - so little less  than 5Gb 
> file'   I tried 'difff' mode (gluster volume set vmpool 
> cluster.data-self-heal-algorithm diff) but with no effect. Any idea, 
> whats wrong? 
>
> -- 
> vlad f halilov 
> swemel 
>
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Bridge: https://bluejeans.com/441850968

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