As detailed in the patch [1], kernel currently does not support resizes
with sparse_super2 enabled. Before the above patch, if we used the
EXT4_IOC_RESIZE_FS ioctl directly, wiht sparse_super2 enabled, the
kernel used to still try the resize and ultimatley leave the fs in an
inconsistent state. This also led to corruption and kernel BUGs.
This patchset adds a test for ext4 to ensure that the kernel handles
resizes with sparse_super2 correctly, and returns -EOPNOTSUPP.
Summary:
Patch 1: Fix the src/ext4_resize.c script to return accurate error
codes.
Patch 2: Add the ext4 test for checking resize functionality
Changes since v1 [2]
* In patch 2, don't iterate if the expected errno is returned
* Code cleanup and additional comments for clarity (also see extra
note in patch 2)
* No changes in patch 1
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=b1489186cc8391e0c1e342f9fbc3eedf6b944c61
[2] https://lore.kernel.org/fstests/cover.1644217569.git.ojaswin@xxxxxxxxxxxxx/
Ojaswin Mujoo (2):
src/ext4_resize.c: Refactor code and ensure accurate errno is returned
ext4: Test to ensure resize with sparse_super2 is handled correctly
src/ext4_resize.c | 46 +++++++++++++------
tests/ext4/056 | 108 +++++++++++++++++++++++++++++++++++++++++++++
tests/ext4/056.out | 2 +
3 files changed, 142 insertions(+), 14 deletions(-)
create mode 100755 tests/ext4/056
create mode 100644 tests/ext4/056.out
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2.27.0
