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cephfs: add read affinity mount option

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This commit makes use of crush location labels from node
labels to supply `crush_location` and `read_from_replica=localize`
options during mount. Using these options, cephfs
will be able to redirect reads to the closest OSD,
improving performance.

Signed-off-by: Praveen M <m.praveen@ibm.com>
This commit is contained in:
Praveen M
2023-11-17 11:59:00 +05:30
committed by mergify[bot]
parent 6446150e67
commit 4d466843b9
13 changed files with 104 additions and 38 deletions
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20
internal/cephfs/nodeserver.go
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@ -766,11 +766,12 @@ func (ns *NodeServer) setMountOptions(
csiConfigFile string,
) error {
var (
configuredMountOptions string
kernelMountOptions string
fuseMountOptions string
mountOptions []string
err error
configuredMountOptions string
readAffinityMountOptions string
kernelMountOptions string
fuseMountOptions string
mountOptions []string
err error
)
if m := volCap.GetMount(); m != nil {
mountOptions = m.GetMountFlags()
@ -781,6 +782,14 @@ func (ns *NodeServer) setMountOptions(
if err != nil {
return err
}
// read affinity mount options
readAffinityMountOptions, err = util.GetReadAffinityMapOptions(
csiConfigFile, volOptions.ClusterID, ns.CLIReadAffinityOptions, ns.NodeLabels,
)
if err != nil {
return err
}
}
switch mnt.(type) {
@ -799,6 +808,7 @@ func (ns *NodeServer) setMountOptions(
configuredMountOptions = kernelMountOptions
}
volOptions.KernelMountOptions = util.MountOptionsAdd(volOptions.KernelMountOptions, configuredMountOptions)
volOptions.KernelMountOptions = util.MountOptionsAdd(volOptions.KernelMountOptions, readAffinityMountOptions)
volOptions.KernelMountOptions = util.MountOptionsAdd(volOptions.KernelMountOptions, mountOptions...)
}