issue #217
Goal
we try to solve when csi exit unexpect, the pod use cephfs pv can not auto recovery because lost mount relation until pod be killed and reschedule to other node. i think this is may be a problem. may be csi plugin can do more thing to remount the old path so when pod may be auto recovery when pod exit and restart, the old mount path can use.
NoGoal
Pod should exit and restart when csi plugin pod exit and mount point lost. if pod not exit will get error of **transport endpoint is not connected**.
implment logic
csi-plugin start:
1. load all MountCachEntry from node local dir
2. check if volID exist in cluster, if no we ignore this entry, if yes continue
3. check if stagingPath exist, if yes we mount the path
4. check if all targetPath exist, if yes we binmount to staging path
NodeServer:
1. NodeStageVolume: add MountCachEntry on local dir include readonly attr and ceph secret
2. NodeStagePublishVolume: add pod bind mount path to MountCachEntry and persist local dir
3. NodeStageunPublishVolume: remove pod bind mount path From MountCachEntry and persist local dir
4. NodeStageunStageVolume: remove MountCachEntry from local dir
This commit reverts the initial implementation of the
multi-node-multi-writer feature:
commit: b5b8e46460
It replaces that implementation with a more restrictive version that
only allows multi-node-multi-writer for volumes of type `block`
With this change there are no volume parameters required in the stoarge
class, we also fail any attempt to create a file based device with
multi-node-multi-write being specified, this way a user doesn't have to
wait until they try and do the publish before realizing it doesn't work.
during volume creation we check volume size in
bytes, and even during listing of volumes and
snapshots we need to check size in bytes
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This change adds the ability to define a `multiNodeWritable` option in
the Storage Class.
This change does a number of things:
1. Allow multi-node-multi-writer access modes if the SC options is
enabled
2. Bypass the watcher checks for MultiNodeMultiWriter Volumes
3. Maintains existing watcher checks for SingleNodeWriter access modes
regardless of the StorageClass option.
fix lint-errors
looping over a map is not guaranteet
to be ordered.
we need to sort the volume ID's for
ListVolume rpc for rbd plugin.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
currently all the created volumes are
stored in the metadata store, so we
can use this information to support
list volumes.
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
during volume creation we are validating
that volume name cannot be empty,removing
this check as we are not going to hit
this case
Fixes: #204
Signed-off-by: Madhu Rajanna <mrajanna@redhat.com>
