Commit Graph

91 Commits

Author SHA1 Message Date
Madhu Rajanna
d4186a6880 rbd: discard flattening error if the image doesnt have parent
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>
2020-08-13 08:37:53 +00:00
Madhu Rajanna
8a581ec6c0 rbd: fix build issue for rbd
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>
2020-08-12 19:53:48 +05:30
Mehdy Khoshnoody
fc5eadf106 rbd: Add rados namespace support for rbd
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>
2020-08-12 16:22:58 +05:30
Madhu Rajanna
bfde065f92 util: move getMonsAndClusterID to util
as we had duplicate functions in both cephfs
and rbd this commit moves the function to util.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-08-11 10:02:53 +00:00
Madhu Rajanna
18f4e9d519 util: move csiconfigfile to util
as we have csiconfigfile in both cephfs
and rbd moving the configfile path to
util folder.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-08-11 10:02:53 +00:00
Madhu Rajanna
2458ec6573 rbd: return error if fetching cluster id fails
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>
2020-08-03 14:25:06 +00:00
Mudit Agarwal
9ed0811422 rbd: implement rbdVolume.resize() with go-ceph
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>
2020-08-03 10:50:01 +00:00
Niels de Vos
be9e7cf956 rbd: pass context.Context to rbdVolume.resize()
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>
2020-07-24 16:04:13 +00:00
Niels de Vos
36469b87e2 util: make ExecComand return stdout and stderr as string
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>
2020-07-24 16:04:13 +00:00
Niels de Vos
ddac66d76b util: use context.Context for logging in ExecCommand
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>
2020-07-24 16:04:13 +00:00
Niels de Vos
bb4f1c7c9d rbd: use util.ExecCommand() instead of execCommand()
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-24 16:04:13 +00:00
Niels de Vos
47d5b60af8 rbd: disable reflink while creating XFS filesystems
Current versions of the mkfs.xfs binary enable reflink support by
default. This causes problems on systems where the kernel does not
support this feature. When the kernel the feature does not support, but
the filesystem has it enabled, the following error is logged in `dmesg`:

    XFS: Superblock has unknown read-only compatible features (0x4) enabled

Introduce a check to see if mkfs.xfs supports the `-m reflink=` option.
In case it does, pass `-m reflink=0` while creating the filesystem.

The check is executed once during the first XFS filesystem creation. The
result of the check is cached until the nodeserver restarts.

Fixes: #966
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-24 13:37:51 +00:00
Niels de Vos
526da43b6a rbd: remove unused rbdStatus()
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-24 11:34:48 +00:00
Niels de Vos
7afaac9c66 rbd: implement rbdVolume.isInUse() with go-ceph
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>
2020-07-24 11:34:48 +00:00
Sven Anderson
92884f56f4 rbd: simplify error handling
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>
2020-07-23 11:16:40 +00:00
Sven Anderson
8393fbe40b util: simplify error handling
The sentinel error code had additional fields in the errors, that are
used nowhere.  This leads to unneccesarily complicated code.  This
change replaces the sentinel errors in utils with standard errors
created with errors.New() and adds a simple JoinErrors() function to
be able to combine sentinel errors from different code tiers.

Related: #1203

Signed-off-by: Sven Anderson <sven@redhat.com>
2020-07-23 11:16:40 +00:00
Madhu Rajanna
b3a4f510e6 rbd: take operation locks before operating on resource
Take operation locks on the resources before operating
on the resouces. This allows us to do parallel operations
for some RPC calls such as Clone and Restore of PVC.
This operations will only be blocked if the image is
expanding or Snapshot and RBD image is getting deleted.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-21 13:25:19 +00:00
Yug
71ddf51544 cleanup: address gomnd warnings
Direct usage of numbers should be avoided.

Issue reported:
mnd: Magic number: X, in <argument> detected (gomnd)

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-21 08:36:24 +00:00
Yug
48fa43270f cleanup: address gocritic warnings
Add explanation to nolint directives.

Issue reported:
whyNoLint: include an explanation for nolint directive (gocritic)

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-21 08:36:24 +00:00
Yug
7f94a57908 cleanup: address godot warnings
Top level comments should end in a period

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-21 08:36:24 +00:00
Madhu Rajanna
11a6f6c1dd rbd: Support data-pool when cloning rbd image
Added support to clone an image in data-pool
during CreateVolume RPC call.

updates #1188

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-20 17:29:48 +00:00
Madhu Rajanna
684cb13c54 rbd: DisAllow CreateVoulume for missmatch volume size
If the requested volume size and the snapshot or the
parent volume from which the clone is to be created
is not equal cephcsi returns an error message.

updates #1188

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-16 12:33:27 +00:00
Madhu Rajanna
5208c0fc38 cleanup: replace klog with v2
This commit replaces the klog with klog/v2
in leftover place.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-16 04:10:58 +00:00
Madhu Rajanna
2c67ba1ec4 rbd: Return current depth if the image is not found
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>
2020-07-15 18:40:45 +00:00
Madhu Rajanna
76c2f3c109 cleanup: re-use flattenTemporaryClonedImages to reduce duplicate code
re-use flattenTemporaryClonedImages to avoid code duplication

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-15 16:10:38 +00:00
Madhu Rajanna
8fc9146056 rbd: flatten temp cloned images
If the snapshots on the parent image exceeds
maxSnapshotsOnImage count, we need to flatten
all the temporary cloned images to over come the
krbd issue of maximum number of snapshots on
an image.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-15 16:10:38 +00:00
Madhu Rajanna
2fe1ee5287 rbd: create temporary snapshot with name same as temporary clone
create temporary snapshot on the parent image same as
name as the temporary clone rbd image. Naming the snapshot
and the temporary cloned image helps to flatten the temporary
cloned images when the snapshots on the parent image exceeds
the configured maxSnapshotsOnImage.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-15 16:10:38 +00:00
Madhu Rajanna
d15ded88f5 cleanup: Remove support for Delete and Unmounting v1.1.0 PVC
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>
2020-07-10 16:07:13 +00:00
Madhu Rajanna
a0fd805a8b rbd: Add support for smart cloning
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>
2020-07-10 14:02:12 +00:00
Yug
1490daed7e cleanup: Avoid usage of numbers
Add seperate functions to handle all
levels and types of logging.

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-10 07:41:23 +00:00
Yug
8dc4ab6b1b rebase: update k8s.io/klog to v2.3.0
Update klog version to v2.3.0

Signed-off-by: Yug <yuggupta27@gmail.com>
2020-07-10 07:41:23 +00:00
Sven Anderson
13f291dfc6 cleanup: use errors.As() for error type checks
Replaces some remaining old-style error type checks with errors.As()

Signed-off-by: Sven Anderson <sven@redhat.com>
2020-07-09 09:58:33 +00:00
Madhu Rajanna
4e82384b43 rbd: check image not found error
during the checkSnapCloneExists we are checking
the image, if the image not found we are deleting
the snapshot on the parent image, This PR corrects
the comparasion. instead of snapshotNotFound we need
to check ImageNotFound error.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-08 17:09:59 +00:00
Madhu Rajanna
9bb79fbe7d journal: replace getStoredImageId with go-ceph
moved implementation of getStoredImageID to go-ceph
to get better performance.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-06 15:03:44 +00:00
Madhu Rajanna
8f758450d8 rbd: add RHEL 8.2 kernel to the list
as RHEL 8.2 supports the deep-flatten
feature, added it to the list to map
the rbd images on the node without flattening.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-06 12:20:00 +00:00
Madhu Rajanna
04c8c7fd4a rbd: correct upstream kernel version for deep-flatten
as v5.1.0 supports the deep-flatten feature,lowering
the required version to map rbd images which
are having deep-flatten feature

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-06 12:20:00 +00:00
Madhu Rajanna
032fb228dd rbd: take lock on parent image during snapshotcreate
we need to take lock on parent rbd image when
we are creating a snapshot from it, if the user
tries to delete/resize the rbd image when we are
taking snapshots,we may face issues. if the volume
lock is present on the rbd image, the user cannot
resize the rbd image nor delete the rbd image.

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
2020-07-06 10:08:31 +00:00
Madhu Rajanna
61a81d35e8 rbd: flatten cloned images to freeup snapshot
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>
2020-07-06 10:08:31 +00:00
Madhu Rajanna
8ef7143e6c rbd: add maxsnapshotsonimage flag
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>
2020-07-06 10:08:31 +00:00
Madhu Rajanna
c04b903eca rbd: add listsnapshots function
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>
2020-07-06 10:08:31 +00:00
Sven Anderson
de74c36d8c cleanup: address err113 warnings about direct error comparisons
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>
2020-07-06 08:57:46 +00:00
Niels de Vos
267c709194 cleanup: use errors.As() in rbd/controllerserver methods
See-also: https://github.com/golang/go/wiki/ErrorValueFAQ#how-should-i-change-my-error-handling-code-to-work-with-the-new-features
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
a47cfbc6c8 cleanup: use errors.As() in rbdVolume.Exists() and rbd.checkSnapExists()
See-also: https://github.com/golang/go/wiki/ErrorValueFAQ#how-should-i-change-my-error-handling-code-to-work-with-the-new-features
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
d4dad7c189 cleanup: use errors.As() in rbd.NodeUnstageVolume()
See-also: https://github.com/golang/go/wiki/ErrorValueFAQ#how-should-i-change-my-error-handling-code-to-work-with-the-new-features
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
7126e92b4f cleanup: use errors.As() in rbd.rbdStatus()
See-also: https://github.com/golang/go/wiki/ErrorValueFAQ#how-should-i-change-my-error-handling-code-to-work-with-the-new-features
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
92aae4834e cleanup: use standard Golang errors package
"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>
2020-07-03 09:12:48 +00:00
Niels de Vos
6d6b5bab3c rbd: add Unwrap() to error types
See-also: https://github.com/golang/go/wiki/ErrorValueFAQ#i-have-a-type-that-implements-error-and-holds-a-nested-error-how-should-i-adapt-it-to-the-new-features
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
0bafa2be8c doc: add comments to rbd error methods
Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-03 09:12:48 +00:00
Niels de Vos
ec1a009dee rbd: allow DeleteVolume() to be too complex according to gocyclo
By fixing the golangci-lint runs, this now gets reported as a problem.
Instead of addressing the compexity of the DeleteVolume() method here,
mark it as a TODO.

Signed-off-by: Niels de Vos <ndevos@redhat.com>
2020-07-02 14:24:02 +00:00
Madhu Rajanna
7a87db39e6 rbd: check rbd image status only duing DeleteVolume RPC
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>
2020-07-02 11:43:25 +00:00