fix_s3_nonencrypted_to_encrypted_xva
Hello Florent,
Branch built and testing
Test procedure: removed the minPartSize=100000000 from remote definition, deleted the b2 backup and restarted the mirror backup. There are some other VMs that will also be uploaded to B2 so it will take a while. Expect feedback tomorrow.
Thank you,
Pedro
This week I only got 500 errors affecting 5 VMs. These 5 VMs were retried at VM-level and one fo these failed again (it failed to backup since I only have set 1 retry).
I'm now looking into connection and bandwitdh to B2.
I'm only reaching 200 Mbps to B2 with my current ISP so I'll tune concurrency so I reach those 200 Mbps with fewer VMs in parallel, making each single VM transfer faster.
Concurrency was set to 8, I'll try with 3 VMs in parallel this weekend.
Tks,
Pedro
Hello forum...
On delta backups we can use CBT and NBD to speed backups. Why is it not possible to use NBD on full backups ?
just curious...
Thank you,
Pedro
Hello,
The initial issue, non encrypred to encrypted mirroring is now working.
The second issue was about general errors when sending backups to S3. I've tried and was able to increase AWS_MAX_ATTEMPTS to 10 but I'm still having errors and VMs that fail the first backup and have to be retried. So these do not seem to be transient errors that can be fixed by increasing AWS_MAX_ATTEMPTS.
Thank you,
Pedro
@pierrebrunet Hi!
I'm on vacation now, so sorry for the delay. In the meantime I've been analyzing these issues and it seems these are somewhat expected and still happen with minpartsize set to 100M.
My next step is to increase the AWS_MAX_ATTEMPTS from the default 3 attempts to 10. This might reduce the number of failed VMs and avoid the need to retry the full VM backup.
From AI research, it seems rclone uses 10 attempts instead of the AWS SDK default.
Here are some stats of my weekly full backup to B2:
"00 Weekly Full Backblaze" ran xxxx → xxxxx — 34.1 hours total, moving ~2.86 TiB across 89 VMs. Final status: failure (more on that below, because it's misleading) -> this is related to XO reporting the backup as a failure even though the follow up retry succeded which is a known issue.
Every one of the 7 first-attempt errors shows attempts: 3 in the SDK metadata — the default budget was exhausted in all cases -> 7 of 89 VMs failed on the initial attempt.
Error mix: 5× Backblaze InternalError 500, 1× ECONNRESET, 1× EPIPE
The 7 failed first attempts burned ~7.1 hours of cumulative transfer time
Even though XO does not expose AWS_MAX_ATTEMPTS parameter I might be able to set it using an environment variable. I'll give a try when I'm back at the office.
Tks,
Pedro
Large VMs still fail with the same error (internal incident), the process is not reliable - don't know if it's a B2 problem or XO.
When I have some time, I'll do another run setting minPartSize=100000000 and see if it helps.
@pierrebrunet Hi!
I'll send you xo logs of the errors.
In the meantime, I've deleted "Long-term retention of backups" settings and I no longer get duplicated VMs on the DR pool.
So it seems that this setting is also being used for replication and I cannot use it. Don't have the space for it on my storage, with thick snapshots on lvmoiscsi.
Hello!
I realize now that the testing procedure was flawed - I shouldn't have "forced started" the replicated VM. I should have started a copy.
But I don't think it would have changed the end result anyway.
Over the weekend I reverted my replications to groups, each group sending to a specific repository.
Now they replicate but I'm getting duplicates.
Can it be that "The long term retention of backups" is also affecting the replication retention ?
I want backup to have long term retention and replication to only keep the latest replication.
Cheers,
Pedro
Hello!
So I created a new job and a small test vm to gather info. I did 3 replications runs and the last 2 failed. Backups are working thoug.
Since this would be a large post, I created a pdf with the test cycle.
...
Only to find out that those are not allowed on this forum! So I captured the pdf pages...
And the logs from the jobs:
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Hope it helps
Hello,
More info on this. I think this error is related with the recent "Distribute replication accross the storage repositories" option that I turned on. Before this option existed, I was splitting the VMs into groups, with tags, and using several jobs with "smart mode" to send each group to a specific SR on the destination replication pool. With this new option I didn't have to do this anymore, it would simplify my replication job.
That said, I still have a group that I want to replicate to a local host disk. This group doesn't fail with "checkBaseVdis() failed" but I do get duplicated VMs on the destination pool, even though the job's schedule is set to only 1 replications retention. Is XO failing to delete the previous VM replication ?
(The same VM duplicated on the replicated pool even though replication retention is set to 1)
(Job / schedule retention settings).
...So I have to prune the duplicated VMs to make sure I don't run out of space on the target pool repository.
I think I'll set up a new job with a single test VM so I can run it several times and try to gather more info.
Hi @Danp ,
I've updated XO to the latest commit and the error is still happening.