Question about the backups

Diogo Jesus

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Oct 16, 2017
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Hello,

At this moment we're running a server from SoYouStart (32Gb RAM / 6To Disk Space).
We are working on the idea of getting 2 + servers to invest in a cluster.

The question here is about the backups. For the last 3 months, sometimes proxmox will randomly restart while doing backups. I checked everything that I could but coulnd't find anything so far (no info on the logs).

I suspect that it can be a problem related to the disks itself. SoYouStart don't manage our server. Means that If something is faulty, I need to give them proofs and only then they do the replacement. I'll do the disks tests and also the raid test tomorrow night. Since we don't have a cluster and we're in production already.

I came today to the forums to ask if it's normal for a LXC container with 20Go of used disk (our mail server) to take 3h+ for the backup. If no, is there any advices that you could give me to try tomorrow night while I do the maintenance?

Our I/O delay is always hitting the 35% / 40% during the backup times. Isn't that to much? Our backup folder is a NFS disk also from SoYouStart.

Proxmox version used is the 5.2. I will also perform the update for the 5.3 tomorrow during the night.

Thank you for your time,

Diogo Jesus
 
Hi,
Our I/O delay is always hitting the 35% / 40% during the backup times. Isn't that to much?
The NFS of OVH is overcommitted and slow.
So it is completely normal that you have a high io wait because you wait that the write on the NFS is finished.
I would make a local backup and move it later to the nfs server, this is much faster.
 
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Hi,

The NFS of OVH is overcommitted and slow.
So it is completely normal that you have a high io wait because you wait that the write on the NFS is finished.
I would make a local backup and move it later to the nfs server, this is much faster.

Thanks for the advice. yesterday I was also thinking about that, and did a simple container backup in local. Didn't check the I/O. But I saw that the backup time was quite similar