sudo modprobe loop
	for i in 1 2 3 4; do
		dd if=/dev/zero of=${WORK_DIR}/disks/img.${i} bs=1M count=2000
		device=$(sudo losetup --find --show ${WORK_DIR}/disks/img.${i})
		sudo mkfs.ext4 -F ${device}
		mkdir -p ${WORK_DIR}/mnt/disk${i}/
		sudo mount ${device} ${WORK_DIR}/mnt/disk${i}/
		sudo chown "$(id -u):$(id -g)" ${device} ${WORK_DIR}/mnt/disk${i}/
	done
	set +e
}

	Limit int

	// DiskID contains the disk ID of the disk.
	// Leave empty to not check disk ID.
	DiskID string
}

// supported FS for Nlink optimization in readdir.
const (
	xfs  = "XFS"
	ext4 = "EXT4"
)

// WalkDir will traverse a directory and return all entries found.
// On success a sorted meta cache stream will be returned.
// Metadata has data stripped, if any.

**In our tests we also found ext4 does not honor POSIX O_DIRECT/Fdatasync semantics, ext4 trades performance for consistency guarantees. Please avoid ext4 in your setup.**

            assertEquals(53687091200L, fileFsSizeInfo.getFree()); // 50GB
        }

        @Test
        @DisplayName("Should handle typical Linux ext4 configuration")
        void shouldHandleTypicalExt4Configuration() throws SMBProtocolDecodingException {
            // Given - typical ext4: 4KB blocks
            long totalBlocks = 26214400L; // 100GB / 4KB
            long freeBlocks = 5242880L; // 20GB / 4KB

        }

        @Test
        @DisplayName("Should handle typical Linux ext4 configuration")
        void shouldHandleTypicalExt4Configuration() throws SMBProtocolDecodingException {
            // Given - typical ext4: 4KB blocks
            long totalBlocks = 26214400L; // 100GB / 4KB
            long freeBlocks = 5242880L; // 20GB / 4KB

* Changed ext3/ext4 volume creation to not reserve any portion of the volume for the root user. When creating ext3/ext4 volume, mkfs defaults to reserving 5% of the volume for the super-user (root). This patch changes the mkfs to pass -m0 to disable this setting.

* Bump up glbc version to 0.9.0-beta.1 ([#40565](https://github.com/kubernetes/kubernetes/pull/40565), [@bprashanth](https://github.com/bprashanth))
* Enable lazy inode table and journal initialization for ext3 and ext4 ([#38865](https://github.com/kubernetes/kubernetes/pull/38865), [@codablock](https://github.com/codablock))

* Added support for creating HA clusters for centos using kube-up.sh. ([#39462](https://github.com/kubernetes/kubernetes/pull/39462), [@Shawyeok](https://github.com/Shawyeok))
* Enable lazy inode table and journal initialization for ext3 and ext4 ([#38865](https://github.com/kubernetes/kubernetes/pull/38865), [@codablock](https://github.com/codablock))

## Changelog since v1.10.5

### Action Required

- Adjusts the fsType for cinder values to be `ext4` if no fsType is specified. ([#90608](https://github.com/kubernetes/kubernetes/pull/90608), [@huffmanca](https://github.com/huffmanca)) [SIG Storage]