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agent: validate hugepage size is supported

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before setting a limit, otherwise paths may not be found.
guest supporting different hugepage size is more likely with peer-pods where
podvm may use different flavor.

Fixes: #5191
Signed-off-by: Snir Sheriber <ssheribe@redhat.com>
This commit is contained in:
Snir Sheriber 2022-09-19 12:38:15 +03:00
parent 1dcb413e68
commit 72738dc11f
1 changed files with 15 additions and 6 deletions
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21
src/agent/rustjail/src/cgroups/fs/mod.rs
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@ -252,19 +252,28 @@ fn set_devices_resources(
} }
fn set_hugepages_resources( fn set_hugepages_resources(
_cg: &cgroups::Cgroup, cg: &cgroups::Cgroup,
hugepage_limits: &[LinuxHugepageLimit], hugepage_limits: &[LinuxHugepageLimit],
res: &mut cgroups::Resources, res: &mut cgroups::Resources,
) { ) {
info!(sl!(), "cgroup manager set hugepage"); info!(sl!(), "cgroup manager set hugepage");
let mut limits = vec![]; let mut limits = vec![];
let hugetlb_controller = cg.controller_of::<HugeTlbController>();
for l in hugepage_limits.iter() { for l in hugepage_limits.iter() {
let hr = HugePageResource { if hugetlb_controller.is_some() && hugetlb_controller.unwrap().size_supported(&l.page_size)
size: l.page_size.clone(), {
limit: l.limit, let hr = HugePageResource {
}; size: l.page_size.clone(),
limits.push(hr); limit: l.limit,
};
limits.push(hr);
} else {
warn!(
sl!(),
"{} page size support cannot be verified, dropping requested limit", l.page_size
);
}
} }
res.hugepages.limits = limits; res.hugepages.limits = limits;
} }