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Merge pull request #1444 from ManaSugi/fix-blkio-weight

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rustjail: fix blkio conversion
This commit is contained in:
Bin Liu 2021-02-25 15:20:20 +08:00 committed by GitHub
commit 735fe3f94a
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1 changed files with 5 additions and 33 deletions
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38
src/agent/rustjail/src/cgroups/fs/mod.rs
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@ -274,36 +274,22 @@ fn set_hugepages_resources(
}
fn set_block_io_resources(
cg: &cgroups::Cgroup,
_cg: &cgroups::Cgroup,
blkio: &LinuxBlockIO,
res: &mut cgroups::Resources,
) -> Result<()> {
info!(sl!(), "cgroup manager set block io");
if cg.v2() {
res.blkio.weight = convert_blk_io_to_v2_value(blkio.weight);
res.blkio.leaf_weight = convert_blk_io_to_v2_value(blkio.leaf_weight);
} else {
res.blkio.weight = blkio.weight;
res.blkio.leaf_weight = blkio.leaf_weight;
}
res.blkio.weight = blkio.weight;
res.blkio.leaf_weight = blkio.leaf_weight;
let mut blk_device_resources = vec![];
for d in blkio.weight_device.iter() {
let (w, lw) = if cg.v2() {
(
convert_blk_io_to_v2_value(blkio.weight),
convert_blk_io_to_v2_value(blkio.leaf_weight),
)
} else {
(blkio.weight, blkio.leaf_weight)
};
let dr = BlkIoDeviceResource {
major: d.blk.major as u64,
minor: d.blk.minor as u64,
weight: w,
leaf_weight: lw,
weight: blkio.weight,
leaf_weight: blkio.leaf_weight,
};
blk_device_resources.push(dr);
}
@ -1107,20 +1093,6 @@ fn convert_memory_swap_to_v2_value(memory_swap: i64, memory: i64) -> Result<i64>
Ok(memory_swap - memory)
}
// Since the OCI spec is designed for cgroup v1, in some cases
// there is need to convert from the cgroup v1 configuration to cgroup v2
// the formula for BlkIOWeight is y = (1 + (x - 10) * 9999 / 990)
// convert linearly from [10-1000] to [1-10000]
// https://github.com/opencontainers/runc/blob/a5847db387ae28c0ca4ebe4beee1a76900c86414/libcontainer/cgroups/utils.go#L382
fn convert_blk_io_to_v2_value(blk_io_weight: Option<u16>) -> Option<u16> {
let v = blk_io_weight.unwrap_or(0);
if v != 0 {
return None;
}
Some(1 + (v - 10) * 9999 / 990 as u16)
}
#[cfg(test)]
mod tests {
use super::*;