It is possible to use enough IO on a tools bastion (which loads home directories via NFS) to make login and other general activities they are intended to support very slow.
Adding a limit using the cgroups mechanism now in place should help with that.
| Status | Subtype | Assigned | Task | ||
|---|---|---|---|---|---|
| Resolved | • Bstorm | T199271 Upgrade the tools gridengine system | |||
| Resolved | • Bstorm | T204530 cloudvps: tools and toolsbeta trusty deprecation | |||
| Resolved | • Bstorm | T200557 Create a stretch and Son of Grid Engine grid in toolsbeta | |||
| Resolved | • aborrero | T210098 Port cgroup restrictions and definitions to systemd/stretch for bastions | |||
| Invalid | None | T218720 Add a blkio restriction to bastion cgroups |
Except that NFS may not be maintainable via blkio restrictions. Will verify if that is true and close the ticket if so.
On looking, it doesn't seem possible through this mechanism. Another one will be needed for this.
Out of curiosity, could you share the tests you did? :-) I would like to understand why cgroups can't handle this.