Delta backup fails on SMB remote
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@julien-f Ok, understand:)
I missunderstood @olivierlambert "From XO" description. I ran that command from the xcp-ng server, and not from the XO server.I ran it now and the ls command is successfull.
A next run does not fix the situasion.
vhd-cli check returns OK.
Do you want me to run thexo-backups clean-vms
also? -
@johnarvid That error looks like the error that I've been getting... https://xcp-ng.org/forum/topic/4353/delta-backup-failed-invalid-argument
I've switched back to full backups for now.
I'm still investigating and troubleshooting though so no solutions yet... -
@deoccultist Thanks for the reply.
I have tried all the steps that @julien-f suggested to you in the last post in your topic.
Guess I have to wait until they have something new I should try. -
I have tested with a clean install of xcp-ng with the latest patches. (Just to make sure it was nothing there causing a problem)
But the issue is still there. -
I can add information that using a share on windows 10 as remote causes this error.
But using samba on linux with this config is ok:[global] workgroup = BERG server string = ember security = user guest ok = no map to guest = Bad Password log file = /var/log/samba/%m.log max log size = 50 printcap name = /dev/null load printers = no min protocol = SMB2 ntlm auth = yes [localNetwork] comment = Local Network Storage path = /mnt/storage/localNetwork browsable = yes read only = no guest ok = no valid users = local,john-arvid force group = samba force user = local
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So could it be permission related on Windows share?
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@olivierlambert I don't think it's a permission error since the same Windows Server 2019 SMB share works fine with full back ups.
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That's because delta is using temporary files named with a dot first. Maybe something causing a problem on your share?
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@olivierlambert Hi, sorry for writing here but I didn't want to open a topic just out of curiosity/doubt.
I have been reading the backup documentation in XOA and it says that they don't advise backups with SMB if the VMs are bigger than 50GB. Why?
I have configured 2 different backups and I noticed that with SMB is much faster than with NFS... how is it possible? but in the end as you say that it is not recommended I have left the NFS. -
@vbits Hi,
Mostly because NFS offer better speed than SMB with small and medium files, but depending on the storage type SMB can be necessary, for your test result difficult to say it's a full backup personally I have this kind of speed with NFS:
What's the appliance behind your remote? -
@Darkbeldin I did a lot of tests months ago, changed the NFS from 3 to 4.1 as well and never managed to match the speed of SMB.
"What's the appliance behind your remote?"
I'm sorry, but I don't understand the question...
you mean what kind of external Storage for backups? truenas on a NexentaStor SC216. -
@vbits said in Delta backup fails on SMB remote:
NexentaStor SC216
Yes that was the question If you have better speed with SMB stay with it NFS should be better in theory but sometime you have to go with real world reality.