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rbd: add maxsnapshotsonimage flag

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Added maxsnapshotsonimage flag to flatten
the older rbd images on the chain to avoid
issue in krbd.The limit is in krbd since it
only allocate 1 4KiB page to handle all the
snapshot ids for an image.

The max limit is 510 as per
https://github.com/torvalds/linux/blob/
aaa2faab4ed8e5fe0111e04d6e168c028fe2987f/drivers/block/rbd.c#L98
in cephcsi we arekeeping the default to 450 to reserve 10%
to avoid issues.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2020-07-01 10:57:11 +05:30
committed by mergify[bot]
parent c04b903eca
commit 8ef7143e6c
6 changed files with 24 additions and 3 deletions
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1
charts/ceph-csi-rbd/templates/provisioner-deployment.yaml
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@ -116,6 +116,7 @@ spec:
- "--drivername=$(DRIVER_NAME)"
- "--rbdhardmaxclonedepth={{ .Values.provisioner.hardMaxCloneDepth }}"
- "--rbdsoftmaxclonedepth={{ .Values.provisioner.softMaxCloneDepth }}"
- "--maxsnapshotsonimage={{ .Values.provisioner.maxSnapshotsOnImage }}"
{{- if .Values.provisioner.skipForceFlatten }}
- "--skipforceflatten={{ .Values.provisioner.skipForceFlatten }}"
{{- end }}