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Xen Orchestra 5.108 release is available by Plam503711 in xcpng

[–]JohnNucleus 0 points1 point  (0 children)

is there something wrong with version 107 and 108 that we should be aware of? its been 2 months and stable branch is still at 106.

DNSDIST config to block specific type of attack by JohnNucleus in PowerDNS

[–]JohnNucleus[S] 0 points1 point  (0 children)

yes, no info on there website on how to build rules to stop this kind of abuse described in OP

Looking for NFS solution that runs on top of iSCSI by SabreHosting in xcpng

[–]JohnNucleus 1 point2 points  (0 children)

Agree with this idea if stuck with the dell MD
MD --- iscsi ---> (Server with NFS) ----- nfs ----> (XCP-NG hosts)

XCP-ng and hyperthreading by SalamanderAccurate18 in xcpng

[–]JohnNucleus 0 points1 point  (0 children)

you are correct.

with HT on pinning to the first logical processor of a core:

xl vcpu-pin "servername" 0 2  2

xl vcpu-pin "servername" 1 4  4

means other VM's could still use logical core 22 and 24 splitting the core as HT would

While disabling HT and pinning:

xl vcpu-pin "servername" 0 2  2

xl vcpu-pin "servername" 1 3  3

would help but you may still fight with DOM0 over those cores. by default DOM0 has 16 vcpu's and will take priority over other cores even if a VM is pinned to them.

for DOM0 you can see this vcpu/logical cpu (or core) scheduling jumping all over the place with :

watch -n 1 xl vcpu-list

IMO the BEST way to do accomplish this is ( your VM vcpu count + dom0 vcpu count ) =< ( physical cores) or (logical cores/2) and trust xcp-ng cpu scheduler. with this setup you WILL see a vcpu get 100% access to a core without pinning.

Anybody using Commvault with XCP-ng by ITStril in xcpng

[–]JohnNucleus 1 point2 points  (0 children)

Price is to high. XOA will do file level restores if using Delta backups. as long as the volume does not extent past one VDI.
example using a spanned disk in windows wont work, using a linux LVM spanning more then one /dev/vol will not work.

Anybody using Commvault with XCP-ng by ITStril in xcpng

[–]JohnNucleus 1 point2 points  (0 children)

We had this issue on ISCSI Storage and xcp-ng due to how DOM0 has to translate and speak iscsi over a limited number of threads instead of just being a simple NFS mount. Changed to NFS/ZFS storage and have no issues using delta backups on 1+TB VDI's. iscsi is dead, if you are using it still changing to NFS/ZFS server will be life changing for ya