[2.1.12] zpool import -m also removing spare and cache when log device is missing

[ixhamza]

spa_import() relies on a pool config fetched by spa_try_import() for spare/cache devices. Import flags are not passed to spa_tryimport(), which makes it return early due to a missing log device and missing retrieving the cache device and spare eventually. Passing ZFS_IMPORT_MISSING_LOG to spa_tryimport() makes it fetch the correct configuration regardless of the missing log device.

Reviewed-by: Alexander Motin [email protected]
Reviewed-by: Brian Behlendorf [email protected]
Signed-off-by: Ameer Hamza [email protected]
Closes #14794

Motivation and Context

Description

How Has This Been Tested?

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Performance enhancement (non-breaking change which improves efficiency)
• Code cleanup (non-breaking change which makes code smaller or more readable)
• Breaking change (fix or feature that would cause existing functionality to change)
• Library ABI change (libzfs, libzfs_core, libnvpair, libuutil and libzfsbootenv)
• Documentation (a change to man pages or other documentation)

Checklist:

• My code follows the OpenZFS code style requirements.
• I have updated the documentation accordingly.
• I have read the contributing document.
• I have added tests to cover my changes.
• I have run the ZFS Test Suite with this change applied.
• All commit messages are properly formatted and contain Signed-off-by.