Use typed error approach: Make GetPVForPVC return ErrPVNotFoundForPVC
when PV is not expected to be found (unbound PVC), then use errors.Is
to check for this error type. When a matching policy exists (e.g.,
pvcPhase: [Pending, Lost] with action: skip), apply the action without
error. When no policy matches, return the original error to preserve
default behavior.
Changes:
- Add ErrPVNotFoundForPVC sentinel error to pvc_pv.go
- Update ShouldPerformSnapshot to handle unbound PVCs with policies
- Update ShouldPerformFSBackup to handle unbound PVCs with policies
- Update item_backupper.go to handle Lost PVCs in tracking functions
- Remove checkPVCOnlySkip helper (no longer needed)
- Update tests to reflect new behavior
Signed-off-by: Tiger Kaovilai <tkaovila@redhat.com>
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
The nolint:staticcheck directives are not needed in the test file because
it calls NewVolumeHelperImpl within the same package, which doesn't
trigger deprecation warnings. Only cross-package calls need the directive.
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
The ShouldPerformSnapshotWithVolumeHelper function and tests intentionally
use NewVolumeHelperImpl (deprecated) for backwards compatibility with
third-party plugins. Add nolint:staticcheck to suppress the linter
warnings with explanatory comments.
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
Remove deprecated functions that were marked for removal per review:
- Remove GetPodsUsingPVC (replaced by GetPodsUsingPVCWithCache)
- Remove IsPVCDefaultToFSBackup (replaced by IsPVCDefaultToFSBackupWithCache)
- Remove associated tests for deprecated functions
- Add deprecation marker to NewVolumeHelperImpl
- Add deprecation marker to ShouldPerformSnapshotWithBackup
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
This commit addresses reviewer feedback on PR #9441 regarding
concurrent backup caching concerns. Key changes:
1. Added lazy per-namespace caching for the CSI PVC BIA plugin path:
- Added IsNamespaceBuilt() method to check if namespace is cached
- Added BuildCacheForNamespace() for lazy, per-namespace cache building
- Plugin builds cache incrementally as namespaces are encountered
2. Added NewVolumeHelperImplWithCache constructor for plugins:
- Accepts externally-managed PVC-to-Pod cache
- Follows pattern from PR #9226 (Scott Seago's design)
3. Plugin instance lifecycle clarification:
- Plugin instances are unique per backup (created via newPluginManager)
- Cleaned up via CleanupClients at backup completion
- No mutex or backup UID tracking needed
4. Test coverage:
- Added tests for IsNamespaceBuilt and BuildCacheForNamespace
- Added tests for NewVolumeHelperImplWithCache constructor
- Added test verifying cache usage for fs-backup determination
This maintains the O(N+M) complexity improvement from issue #9179
while addressing architectural concerns about concurrent access.
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
- Rename NewVolumeHelperImplWithCache to NewVolumeHelperImplWithNamespaces
- Move cache building logic from backup.go into volumehelper
- Return error from NewVolumeHelperImplWithNamespaces if cache build fails
- Remove fallback in main backup path - backup fails if cache build fails
- Update NewVolumeHelperImpl to call NewVolumeHelperImplWithNamespaces
- Add comments clarifying fallback is only used by plugins
- Update tests for new error return signature
This addresses review comments from @Lyndon-Li and @kaovilai:
- Cache building is now encapsulated in volumehelper
- No fallback in main backup path ensures predictable performance
- Code reuse between constructors
Fixes#9179
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
- Use ResolveNamespaceList() instead of GetIncludes() for more accurate
namespace resolution when building the PVC-to-Pod cache
- Refactor NewVolumeHelperImpl to call NewVolumeHelperImplWithCache with
nil cache parameter to avoid code duplication
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
Add test case to verify that the PVC-to-Pod cache is used even when
no volume policy is configured. When defaultVolumesToFSBackup is true,
the cache is used to find pods using the PVC to determine if fs-backup
should be used instead of snapshot.
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
Add TestVolumeHelperImplWithCache_ShouldPerformFSBackup to verify:
- Volume policy match with cache returns correct fs-backup decision
- Volume policy match with snapshot action skips fs-backup
- Fallback to direct lookup when cache is not built
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
Add TestVolumeHelperImplWithCache_ShouldPerformSnapshot to verify:
- Volume policy match with cache returns correct snapshot decision
- fs-backup via opt-out with cache properly skips snapshot
- Fallback to direct lookup when cache is not built
These tests verify the cache-enabled code path added in the previous
commit for improved volume policy performance.
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
The GetPodsUsingPVC function had O(N*M) complexity - for each PVC,
it listed ALL pods in the namespace and iterated through each pod.
With many PVCs and pods, this caused significant performance
degradation (2+ seconds per PV in some cases).
This change introduces a PVC-to-Pod cache that is built once per
backup and reused for all PVC lookups, reducing complexity from
O(N*M) to O(N+M).
Changes:
- Add PVCPodCache struct with thread-safe caching in podvolume pkg
- Add NewVolumeHelperImplWithCache constructor for cache support
- Build cache before backup item processing in backup.go
- Add comprehensive unit tests for cache functionality
- Graceful fallback to direct lookups if cache fails
Fixes#9179
Signed-off-by: Shubham Pampattiwar <spampatt@redhat.com>
Tiger Kaovilai
Shubham Pampattiwar
Lyndon-Li
Matthieu MOREL
hu-keyu
Xun Jiang/Bruce Jiang
Xun Jiang