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server: charge snapshot copy primary storage to the snapshot owner ac… - #14036

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rootnomad wants to merge 4 commits into
apache:mainfrom
rootnomad:fix/snapshot-copy-resourcecount-account
Open

rootnomad wants to merge 4 commits into
apache:mainfrom
rootnomad:fix/snapshot-copy-resourcecount-account

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@rootnomad

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Description

When a snapshot is copied to an extra primary storage pool (createSnapshot with
storagepoolids), copySnapshotOnPool incremented the primary_storage resource count
using CallContext.getCallingUserId(). That method's first argument is an account
id, but getCallingUserId() returns a user id, and user ids and account ids are
independent sequences. So the usage was charged to whatever account happens to
share the caller's user id, never to the snapshot's real owner, and the delete
path never decrements it. The following guard also compared the user id against
Account.ACCOUNT_ID_SYSTEM.

Charge the snapshot owner's account id, and use the calling account id for the
system check.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)

Feature/Enhancement Scale or Bug Severity

Bug Severity

  • Minor

How Has This Been Tested?

Added a unit test asserting the primary_storage count is charged to the snapshot
owner's account rather than the calling user id. Also built the standard packages
and deployed on a KVM advanced zone.

…count

copySnapshotOnPool passed CallContext.getCallingUserId() to
incrementResourceCount, whose first argument is an account id, not a user id.
User ids and account ids are independent sequences, so the primary_storage
count was charged to whichever account happened to share the caller's user id
(and never to the real owner), corrupting quota accounting. The following
guard also compared the calling user id against Account.ACCOUNT_ID_SYSTEM.
Use the snapshot owner's account id for the count and the calling account id
for the system check.
@rootnomad

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@DaanHoogland Could you pls take a look at this

Comment thread server/src/main/java/com/cloud/storage/snapshot/SnapshotManagerImpl.java Outdated

@DaanHoogland DaanHoogland left a comment

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clgtm, one nit though

The test is in the same package, so the method does not need to be protected.
@rootnomad

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Good point, thank you. Made it package-private in 5a5e884.

Comment thread server/src/main/java/com/cloud/storage/snapshot/SnapshotManagerImpl.java Outdated
The resource count already goes to the owner, so the usage event should too,
otherwise an admin copying a user's snapshot is billed for it. Matches the
snapshot create and delete usage events, which also use the owner account.

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@rootnomad , can this test be (added?) in SnapshotManagerImplTest ? no need to have more than a singl test suite for a class (or the class needs refactoring)

…ImplTest

Keep a single test suite per class. Move
copySnapshotOnPoolChargesPrimaryStorageToTheSnapshotOwnerAccount into
SnapshotManagerImplTest and drop the separate
SnapshotManagerImplCopyResourceCountTest. The case reuses the mocks already
declared on the suite, so the duplicate mock declarations and the separate
runner are no longer needed.

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3 participants