earlier if the depth check fails the
complete vol struct was getting logged,
this commits logs only the pool and image
name.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
In the case of Disaster Recovery failover, the
user expected to create the static PVC's. We have
planned not to go with the PVC name and namespace
for many reasons (as in kubernetes it's planned to
support PVC transfer to a new namespace with a
different name and with new features coming in
like data populator etc). For now, we are
planning to go with static PVC's to support
async mirroring.
During Async mirroring only the RBD images are
mirrored to the secondary site, and when the
user creates the static PVC's on the failover
we need to regenerate the omap data. The
volumeHandler in PV spec is an encoded string
which contains clusterID and poolID and image UUID,
The clusterID and poolID won't remain same on both
the clusters, for that cephcsi need to generate the
new volume handler and its to create a mapping
between new volume handler and old volume handler
with that whenever cephcsi gets csi requests it
check if the mapping exists it will pull the new
volume handler and continues other operations.
The new controller watches for the PVs created,
It checks if the omap exists if it doesn't it
will regenerate the entire omap data.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
in case of mirrored image, if the image is
primary a watcher will be added by the rbd
mirror deamon on the rbd image.
we have to consider 2 watcher to check image
is in use.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
The error check condition in genVolFromID() is always false as far as
code reading/workflow goes. Removing it for the same reason.
Signed-off-by: Humble Chirammal <hchiramm@redhat.com>
cephcsi uses cli for fetching snap list as well as to check the
snapshot namespace, replaced that with go-ceph calls.
Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>
updateVolWithImageInfo() is currently executing an rbd command
to get details about an RBD image. Replaced it with the
required go-ceph functions.
Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>
if the image is created without flattening image-feature
the image will get few image-features by default, deep-flatten
is one of them. if the image doesnot have any parent
the rbd image flattening will fail, This commit discards
error message if the image doesnt have any parent.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
merging of https://github.com/ceph/ceph-csi/pull/1035
broken the cephcsi building. This commits fixes
the build issue.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
Make sure to operate within the namespace if any given
when dealing with rbd images and snapshots and their journals.
Signed-off-by: Mehdy Khoshnoody <mehdy.khoshnoody@gmail.com>
if we are not able to fetch the cluster-ID from
the createSnapshot request and also if we are
not able to get the monitor information from
the cluster-ID return error instead of using
the parent image information.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
Replaced command execution with go-ceph Resize() function.
Volsize is being updated before waiting for resize() to return,
fixed it to get updated only after resize() is successful.
Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>
While adding the context.Context to the resizeRBDimage() function, it
became a little ugly. So renaming the function to resize() and making it
a method of the rbdVolume type.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
Most consumers of util.ExecCommand() need to convert the returned []byte
format of stdout and/or stderr to string. By having util.ExecCommand()
return strings instead, the code gets a little simpler.
A few commands return JSON that needs to be parsed. These commands will
be replaced by go-ceph implementations later on. For now, convert the
strings back to []byte when needed.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
All calls to util.ExecCommand() now pass the context.Context. In some
cases this is not possible or needed, and util.ExecCommand() will not
log the command.
This should make debugging easier when command executions fail.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
The new rbdVolume.isInUse() method will replace the rbdStatus()
function. This removes one more rbd command execution in the
DeleteVolume path.
Signed-off-by: Niels de Vos <ndevos@redhat.com>
This change replaces the sentinel errors in rbd module with
standard errors created with errors.New().
Related: #1203
Signed-off-by: Sven Anderson <sven@redhat.com>
Direct usage of numbers should be avoided.
Issue reported:
mnd: Magic number: X, in <argument> detected (gomnd)
Signed-off-by: Yug <yuggupta27@gmail.com>
If the image in the chain is moved to trash, we
cannot get the image details. We need to return the
found depth to the caller.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
as v1.0.0 is deprecated we need to remove the support
for it in the Next coming (v3.0.0) release. This PR
removes the support for the same.
closes#882
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
Added support for RBD PVC to PVC cloning, below
commands are executed to create a PVC-PVC clone from
RBD side.
* Check the depth(n) of the cloned image if n>=(hard limit -2)
or ((soft limit-2) Add a task to flatten the image and return
about (to avoid image leak) **Note** will try to flatten the
temp clone image in the chain if available
* Reserve the key and values in omap (this will help us to
avoid the leak as it's not reserved earlier as we have returned
ABORT (the request may not come back))
* Create a snapshot of rbd image
* Clone the snapshot (temp clone)
* Delete the snapshot
* Snapshot the temp clone
* Clone the snapshot (final clone)
* Delete the snapshot
```bash
1) check the image depth of the parent image if flatten required
add a task to flatten image and return ABORT to avoid leak
(hardlimit-2 and softlimit-2 check will be done)
2) Reserve omap keys
2) rbd snap create <RBD image for src k8s volume>@<random snap name>
3) rbd clone --rbd-default-clone-format 2 --image-feature
layering,deep-flatten <RBD image for src k8s volume>@<random snap>
<RBD image for temporary snap image>
4) rbd snap rm <RBD image for src k8s volume>@<random snap name>
5) rbd snap create <cloned RBD image created in snapshot process>@<random snap name>
6) rbd clone --rbd-default-clone-format 2 --image-feature <k8s dst vol config>
<RBD image for temporary snap image>@<random snap name> <RBD image for k8s dst vol>
7)rbd snap rm <RBD image for src k8s volume>@<random snap name>
```
* Delete temporary clone image created as part of clone(delete if present)
* Delete rbd image
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
flatten cloned images to remove the link
with the snapshot as the parent snapshot can
be removed from the trash.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
added listsnapshots function for an
rbd image to list all the snapshots
created from an rbd images, This will
list the snapshots which are in trash also.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
Several places in the code compared errors directly with the go-ceph
sentinel errors. This change uses the errors.Is() function of go
1.13 instead. The err113 linter reported this issue as:
err113: do not compare errors directly, use errors.Is() instead
Signed-off-by: Sven Anderson <sven@redhat.com>
"github.com/pkg/errors" does not offer more functionlity than that we
need from the standard "errors" package. With Golang v1.13 errors can be
wrapped with `fmt.Errorf("... %w", err)`. `errors.Is()` and
`errors.As()` are available as well.
See-also: https://tip.golang.org/doc/go1.13#error_wrapping
Signed-off-by: Niels de Vos <ndevos@redhat.com>
currently, various calls to deleteImage does not
need the rbdStatus check. That is only required
when calling from DeleteVolume. This PR optimizes the
rbd image deletion by removing the status check.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
This Adds a support for create,delete snapshot
and creating a new rbd image from the snapshot.
* Create a snapshot
* Create a temporary snapshot from the parent volume
* Clone a new image from a temporary snapshot with options
--rbd-default-clone-format 2 --image-feature layering,deep-flatten
* Delete temporary snapshot created
* Create a new snapshot from cloned image
* Check the image chain depth, if the Softlimit is reached Add a
task Flatten the cloned image and return success. if the depth
is reached hard limit Add a task Flatten the cloned image and
return snapshot status ready as false
```bash
1) rbd snap create <RBD image for src k8s volume>@<random snap name>
2) rbd clone --rbd-default-clone-format 2 --image-feature
layering,deep-flatten <RBD image for src k8s volume>@<random snap>
<RBD image for temporary snap image>
3) rbd snap rm <RBD image for src k8s volume>@<random snap name>
4) rbd snap rm <RBD image for temporary snap image>@<random snap name>
5) check the depth, if the depth is greater than configured hard
limit add a task to flatten the cloned image return snapshot status
ready as false if the depth is greater than soft limit add a task
to flatten the image and return success
```
* Create a clone from snapshot
* Clone a new image from the snapshot with user-provided options
* Check the depth(n) of the cloned image if n>=(hard limit)
Add task to flatten the image and return ABORT (to avoid image leak)
```bash
1) rbd clone --rbd-default-clone-format 2 --image-feature
<k8s dst vol config> <RBD image for temporary snap image>@<random snap name>
<RBD image for k8s dst vol>
2) check the depth, if the depth is greater than configured hard limit
add a task to flatten the cloned image return ABORT error if the depth is
greater than soft limit add a task to flatten the image and return success
```
* Delete snapshot or pvc
* Move the temporary cloned image to the trash
* Add task to remove the image from the trash
```bash
1) rbd trash mv <cloned image>
2) ceph rbd task trash remove <cloned image>
```
With earlier implementation to delete the image, we used to add
a task to remove the image with new changes this cannot be done
as the image may contain snapshots or linking.so we will be
doing below steps to delete an image(this will be
applicable for both normal image and cloned image)
* Move the rbd image to the trash
* Add task to remove the image from the trash
```bash
1) rbd trash mv <image>
2) ceph rbd task trash remove <image>
```
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
we dont need to call the snapshot CLI functions
to get snapshot details. as these details are not
requried with new snapshot design.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
cephcsi need to store and retrieve the rbd image ID
in the omap as we need the image ID to add a
task to remove the image from the Trash.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
as with snapshot and cloning implementation
the rbd images cannot be deleted with rbd
remove or add a task to delete the rbd image
as it might contains the snapshots and clones.
we need to make use of the rbd mv trask and
add a task to remove the image from trash
once all its clones and snapshots links
are broken and there will no longer any
dependency between parent and child images.
Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
