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rbd: add hardlimt and softlimit flag

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added Hardlimit and Softlimit flags for cephcsi
arguments. When the Softlimit is reached cephcsi
will start a background task to flatten the rbd
image and return success and if the hardlimit
is reached it will start a background task
to flatten the rbd image and return ready
to use as false to make sure that the image
will not be used until it is flatten.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This commit is contained in:
Madhu Rajanna
2020-06-24 12:14:02 +05:30
committed by mergify[bot]
parent 3e7fa93256
commit 9b518726ab
7 changed files with 56 additions and 17 deletions
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8
internal/rbd/driver.go
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@ -53,6 +53,11 @@ var (
// VolumeName to backing RBD images
volJournal *journal.Config
snapJournal *journal.Config
// rbdHardMaxCloneDepth is the hard limit for maximum number of nested volume clones that are taken before a flatten occurs
rbdHardMaxCloneDepth uint
// rbdSoftMaxCloneDepth is the soft limit for maximum number of nested volume clones that are taken before a flatten occurs
rbdSoftMaxCloneDepth uint
)
// NewDriver returns new rbd driver
@ -103,6 +108,9 @@ func (r *Driver) Run(conf *util.Config, cachePersister util.CachePersister) {
CSIInstanceID = conf.InstanceID
}
// update clone soft and hard limit
rbdHardMaxCloneDepth = conf.RbdHardMaxCloneDepth
rbdSoftMaxCloneDepth = conf.RbdSoftMaxCloneDepth
// Create instances of the volume and snapshot journal
volJournal = journal.NewCSIVolumeJournal(CSIInstanceID)
snapJournal = journal.NewCSISnapshotJournal(CSIInstanceID)