mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-07-26 05:03:09 +00:00
Disable size check for xfs/ext3/ext4 filesystems before expansion
This commit is contained in:
Hemant Kumar
parent
c8f2295d68
commit
c916dba607
@ -21,9 +21,9 @@ package mount
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import (
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import (
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"fmt"
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"fmt"
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"strconv"
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"strings"
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"strings"
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"k8s.io/apimachinery/pkg/util/sets"
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"k8s.io/klog/v2"
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"k8s.io/klog/v2"
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utilexec "k8s.io/utils/exec"
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utilexec "k8s.io/utils/exec"
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)
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)
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@ -129,18 +129,93 @@ func (resizefs *ResizeFs) NeedResize(devicePath string, deviceMountPath string)
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return false, nil
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return false, nil
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}
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}
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supportedFormats := sets.New("ext3", "ext4", "xfs", "btrfs")
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switch format {
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if !supportedFormats.Has(format) {
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case "ext3", "ext4", "xfs":
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// For ext3/ext4/xfs, recommendation received from linux filesystem folks is to let
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// resize2fs/xfs_growfs do the check for us. So we will not do any check here.
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return true, nil
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case "btrfs":
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deviceSize, err := resizefs.getDeviceSize(devicePath)
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if err != nil {
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return false, err
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}
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blockSize, fsSize, err := resizefs.getBtrfsSize(devicePath)
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klog.V(5).Infof("Btrfs size: filesystem size=%d, block size=%d, err=%v", fsSize, blockSize, err)
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if err != nil {
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return false, err
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}
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if deviceSize <= fsSize+blockSize {
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return false, nil
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}
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return true, nil
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default:
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return false, fmt.Errorf("could not parse fs info of given filesystem format: %s. Supported fs types are: xfs, ext3, ext4", format)
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return false, fmt.Errorf("could not parse fs info of given filesystem format: %s. Supported fs types are: xfs, ext3, ext4", format)
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}
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}
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return true, nil
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}
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func (resizefs *ResizeFs) getDeviceSize(devicePath string) (uint64, error) {
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output, err := resizefs.exec.Command(blockDev, "--getsize64", devicePath).CombinedOutput()
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outStr := strings.TrimSpace(string(output))
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if err != nil {
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return 0, fmt.Errorf("failed to read size of device %s: %s: %s", devicePath, err, outStr)
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}
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size, err := strconv.ParseUint(outStr, 10, 64)
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if err != nil {
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return 0, fmt.Errorf("failed to parse size of device %s %s: %s", devicePath, outStr, err)
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}
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return size, nil
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}
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func (resizefs *ResizeFs) getBtrfsSize(devicePath string) (uint64, uint64, error) {
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output, err := resizefs.exec.Command("btrfs", "inspect-internal", "dump-super", "-f", devicePath).CombinedOutput()
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if err != nil {
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return 0, 0, fmt.Errorf("failed to read size of filesystem on %s: %s: %s", devicePath, err, string(output))
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}
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blockSize, totalBytes, _ := resizefs.parseBtrfsInfoOutput(string(output), "sectorsize", "total_bytes")
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if blockSize == 0 {
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return 0, 0, fmt.Errorf("could not find block size of device %s", devicePath)
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}
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if totalBytes == 0 {
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return 0, 0, fmt.Errorf("could not find total size of device %s", devicePath)
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}
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return blockSize, totalBytes, nil
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}
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func (resizefs *ResizeFs) parseBtrfsInfoOutput(cmdOutput string, blockSizeKey string, totalBytesKey string) (uint64, uint64, error) {
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lines := strings.Split(cmdOutput, "\n")
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var blockSize, blockCount uint64
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var err error
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for _, line := range lines {
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tokens := strings.Fields(line)
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if len(tokens) != 2 {
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continue
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}
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key, value := strings.ToLower(strings.TrimSpace(tokens[0])), strings.ToLower(strings.TrimSpace(tokens[1]))
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if key == blockSizeKey {
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blockSize, err = strconv.ParseUint(value, 10, 64)
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if err != nil {
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return 0, 0, fmt.Errorf("failed to parse block size %s: %s", value, err)
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}
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}
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if key == totalBytesKey {
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blockCount, err = strconv.ParseUint(value, 10, 64)
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if err != nil {
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return 0, 0, fmt.Errorf("failed to parse total size %s: %s", value, err)
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}
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}
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}
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return blockSize, blockCount, err
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}
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}
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func (resizefs *ResizeFs) getDeviceRO(devicePath string) (bool, error) {
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func (resizefs *ResizeFs) getDeviceRO(devicePath string) (bool, error) {
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output, err := resizefs.exec.Command(blockDev, "--getro", devicePath).CombinedOutput()
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output, err := resizefs.exec.Command(blockDev, "--getro", devicePath).CombinedOutput()
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outStr := strings.TrimSpace(string(output))
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outStr := strings.TrimSpace(string(output))
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if err != nil {
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if err != nil {
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return false, fmt.Errorf("failed to get readonly bit from device %s: %s: %s", devicePath, err, outStr)
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return false, fmt.Errorf("failed to get readonly bit from device %s: %w: %s", devicePath, err, outStr)
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}
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}
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switch outStr {
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switch outStr {
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case "0":
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case "0":
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@ -20,12 +20,290 @@ limitations under the License.
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package mount
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package mount
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import (
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import (
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"fmt"
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"testing"
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"testing"
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"k8s.io/utils/exec"
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"k8s.io/utils/exec"
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fakeexec "k8s.io/utils/exec/testing"
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fakeexec "k8s.io/utils/exec/testing"
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)
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)
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func TestGetFileSystemSize(t *testing.T) {
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cmdOutputSuccessBtrfs := `superblock: bytenr=65536, device=/dev/loop0
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---------------------------------------------------------
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csum_type 0 (crc32c)
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csum_size 4
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csum 0x31693b11 [match]
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bytenr 65536
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flags 0x1
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( WRITTEN )
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magic _BHRfS_M [match]
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fsid 3f53c8f7-3c57-4185-bf1d-b305b42cce97
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metadata_uuid 3f53c8f7-3c57-4185-bf1d-b305b42cce97
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label
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generation 7
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root 30441472
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sys_array_size 129
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chunk_root_generation 6
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root_level 0
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chunk_root 22036480
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chunk_root_level 0
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log_root 0
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log_root_transid 0
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log_root_level 0
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total_bytes 1048576000
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bytes_used 147456
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sectorsize 4096
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nodesize 16384
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leafsize (deprecated) 16384
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stripesize 4096
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root_dir 6
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num_devices 1
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compat_flags 0x0
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compat_ro_flags 0x3
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( FREE_SPACE_TREE |
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FREE_SPACE_TREE_VALID )
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incompat_flags 0x341
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( MIXED_BACKREF |
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EXTENDED_IREF |
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SKINNY_METADATA |
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NO_HOLES )
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cache_generation 0
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uuid_tree_generation 7
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dev_item.uuid 987c8423-fba3-4168-9892-560a116feb81
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dev_item.fsid 3f53c8f7-3c57-4185-bf1d-b305b42cce97 [match]
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dev_item.type 0
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dev_item.total_bytes 1048576000
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dev_item.bytes_used 130023424
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dev_item.io_align 4096
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dev_item.io_width 4096
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dev_item.sector_size 4096
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dev_item.devid 1
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dev_item.dev_group 0
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dev_item.seek_speed 0
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dev_item.bandwidth 0
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dev_item.generation 0
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sys_chunk_array[2048]:
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item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 22020096)
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length 8388608 owner 2 stripe_len 65536 type SYSTEM|DUP
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io_align 65536 io_width 65536 sector_size 4096
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num_stripes 2 sub_stripes 1
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stripe 0 devid 1 offset 22020096
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dev_uuid 987c8423-fba3-4168-9892-560a116feb81
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stripe 1 devid 1 offset 30408704
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dev_uuid 987c8423-fba3-4168-9892-560a116feb81
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backup_roots[4]:
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backup 0:
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backup_tree_root: 30441472 gen: 5 level: 0
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backup_chunk_root: 22020096 gen: 5 level: 0
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backup_extent_root: 30474240 gen: 5 level: 0
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backup_fs_root: 30425088 gen: 5 level: 0
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backup_dev_root: 30457856 gen: 5 level: 0
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backup_csum_root: 30490624 gen: 5 level: 0
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backup_total_bytes: 1048576000
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backup_bytes_used: 147456
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backup_num_devices: 1
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backup 1:
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backup_tree_root: 30588928 gen: 6 level: 0
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backup_chunk_root: 22036480 gen: 6 level: 0
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backup_extent_root: 30408704 gen: 6 level: 0
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backup_fs_root: 30425088 gen: 5 level: 0
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backup_dev_root: 30556160 gen: 6 level: 0
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backup_csum_root: 30490624 gen: 5 level: 0
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backup_total_bytes: 1048576000
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backup_bytes_used: 147456
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backup_num_devices: 1
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backup 2:
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backup_tree_root: 30441472 gen: 7 level: 0
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backup_chunk_root: 22036480 gen: 6 level: 0
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backup_extent_root: 30474240 gen: 7 level: 0
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backup_fs_root: 30425088 gen: 5 level: 0
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backup_dev_root: 30457856 gen: 7 level: 0
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backup_csum_root: 30490624 gen: 5 level: 0
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backup_total_bytes: 1048576000
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backup_bytes_used: 147456
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backup_num_devices: 1
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backup 3:
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backup_tree_root: 30408704 gen: 4 level: 0
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backup_chunk_root: 1064960 gen: 4 level: 0
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backup_extent_root: 5341184 gen: 4 level: 0
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backup_fs_root: 5324800 gen: 3 level: 0
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backup_dev_root: 5242880 gen: 4 level: 0
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backup_csum_root: 1130496 gen: 1 level: 0
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backup_total_bytes: 1048576000
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backup_bytes_used: 114688
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backup_num_devices: 1
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`
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cmdOutputNoDataBtrfs := `superblock: bytenr=65536, device=/dev/loop0
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---------------------------------------------------------
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|
csum_type 0 (crc32c)
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|
csum_size 4
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|
csum 0x31693b11 [match]
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|
bytenr 65536
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|
flags 0x1
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|
( WRITTEN )
|
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|
magic _BHRfS_M [match]
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|
fsid 3f53c8f7-3c57-4185-bf1d-b305b42cce97
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|
metadata_uuid 3f53c8f7-3c57-4185-bf1d-b305b42cce97
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|
label
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|
generation 7
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|
root 30441472
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|
sys_array_size 129
|
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|
chunk_root_generation 6
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|
root_level 0
|
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|
chunk_root 22036480
|
||||||
|
chunk_root_level 0
|
||||||
|
log_root 0
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|
log_root_transid 0
|
||||||
|
log_root_level 0
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|
bytes_used 147456
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|
nodesize 16384
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|
leafsize (deprecated) 16384
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|
stripesize 4096
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|
root_dir 6
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|
num_devices 1
|
||||||
|
compat_flags 0x0
|
||||||
|
compat_ro_flags 0x3
|
||||||
|
( FREE_SPACE_TREE |
|
||||||
|
FREE_SPACE_TREE_VALID )
|
||||||
|
incompat_flags 0x341
|
||||||
|
( MIXED_BACKREF |
|
||||||
|
EXTENDED_IREF |
|
||||||
|
SKINNY_METADATA |
|
||||||
|
NO_HOLES )
|
||||||
|
cache_generation 0
|
||||||
|
uuid_tree_generation 7
|
||||||
|
dev_item.uuid 987c8423-fba3-4168-9892-560a116feb81
|
||||||
|
dev_item.fsid 3f53c8f7-3c57-4185-bf1d-b305b42cce97 [match]
|
||||||
|
dev_item.type 0
|
||||||
|
dev_item.total_bytes 1048576000
|
||||||
|
dev_item.bytes_used 130023424
|
||||||
|
dev_item.io_align 4096
|
||||||
|
dev_item.io_width 4096
|
||||||
|
dev_item.sector_size 4096
|
||||||
|
dev_item.devid 1
|
||||||
|
dev_item.dev_group 0
|
||||||
|
dev_item.seek_speed 0
|
||||||
|
dev_item.bandwidth 0
|
||||||
|
dev_item.generation 0
|
||||||
|
sys_chunk_array[2048]:
|
||||||
|
item 0 key (FIRST_CHUNK_TREE CHUNK_ITEM 22020096)
|
||||||
|
length 8388608 owner 2 stripe_len 65536 type SYSTEM|DUP
|
||||||
|
io_align 65536 io_width 65536 sector_size 4096
|
||||||
|
num_stripes 2 sub_stripes 1
|
||||||
|
stripe 0 devid 1 offset 22020096
|
||||||
|
dev_uuid 987c8423-fba3-4168-9892-560a116feb81
|
||||||
|
stripe 1 devid 1 offset 30408704
|
||||||
|
dev_uuid 987c8423-fba3-4168-9892-560a116feb81
|
||||||
|
backup_roots[4]:
|
||||||
|
backup 0:
|
||||||
|
backup_tree_root: 30441472 gen: 5 level: 0
|
||||||
|
backup_chunk_root: 22020096 gen: 5 level: 0
|
||||||
|
backup_extent_root: 30474240 gen: 5 level: 0
|
||||||
|
backup_fs_root: 30425088 gen: 5 level: 0
|
||||||
|
backup_dev_root: 30457856 gen: 5 level: 0
|
||||||
|
backup_csum_root: 30490624 gen: 5 level: 0
|
||||||
|
backup_total_bytes: 1048576000
|
||||||
|
backup_bytes_used: 147456
|
||||||
|
backup_num_devices: 1
|
||||||
|
|
||||||
|
backup 1:
|
||||||
|
backup_tree_root: 30588928 gen: 6 level: 0
|
||||||
|
backup_chunk_root: 22036480 gen: 6 level: 0
|
||||||
|
backup_extent_root: 30408704 gen: 6 level: 0
|
||||||
|
backup_fs_root: 30425088 gen: 5 level: 0
|
||||||
|
backup_dev_root: 30556160 gen: 6 level: 0
|
||||||
|
backup_csum_root: 30490624 gen: 5 level: 0
|
||||||
|
backup_total_bytes: 1048576000
|
||||||
|
backup_bytes_used: 147456
|
||||||
|
backup_num_devices: 1
|
||||||
|
|
||||||
|
backup 2:
|
||||||
|
backup_tree_root: 30441472 gen: 7 level: 0
|
||||||
|
backup_chunk_root: 22036480 gen: 6 level: 0
|
||||||
|
backup_extent_root: 30474240 gen: 7 level: 0
|
||||||
|
backup_fs_root: 30425088 gen: 5 level: 0
|
||||||
|
backup_dev_root: 30457856 gen: 7 level: 0
|
||||||
|
backup_csum_root: 30490624 gen: 5 level: 0
|
||||||
|
backup_total_bytes: 1048576000
|
||||||
|
backup_bytes_used: 147456
|
||||||
|
backup_num_devices: 1
|
||||||
|
|
||||||
|
backup 3:
|
||||||
|
backup_tree_root: 30408704 gen: 4 level: 0
|
||||||
|
backup_chunk_root: 1064960 gen: 4 level: 0
|
||||||
|
backup_extent_root: 5341184 gen: 4 level: 0
|
||||||
|
backup_fs_root: 5324800 gen: 3 level: 0
|
||||||
|
backup_dev_root: 5242880 gen: 4 level: 0
|
||||||
|
backup_csum_root: 1130496 gen: 1 level: 0
|
||||||
|
backup_total_bytes: 1048576000
|
||||||
|
backup_bytes_used: 114688
|
||||||
|
backup_num_devices: 1
|
||||||
|
|
||||||
|
`
|
||||||
|
|
||||||
|
testcases := []struct {
|
||||||
|
name string
|
||||||
|
devicePath string
|
||||||
|
blocksize uint64
|
||||||
|
blockCount uint64
|
||||||
|
cmdOutput string
|
||||||
|
expectError bool
|
||||||
|
fsType string
|
||||||
|
}{
|
||||||
|
{
|
||||||
|
name: "success parse btrfs info",
|
||||||
|
devicePath: "/dev/test1",
|
||||||
|
blocksize: 4096,
|
||||||
|
blockCount: 256000,
|
||||||
|
cmdOutput: cmdOutputSuccessBtrfs,
|
||||||
|
expectError: false,
|
||||||
|
fsType: "btrfs",
|
||||||
|
},
|
||||||
|
{
|
||||||
|
name: "block size not present - btrfs",
|
||||||
|
devicePath: "/dev/test1",
|
||||||
|
blocksize: 0,
|
||||||
|
blockCount: 0,
|
||||||
|
cmdOutput: cmdOutputNoDataBtrfs,
|
||||||
|
expectError: true,
|
||||||
|
fsType: "btrfs",
|
||||||
|
},
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, test := range testcases {
|
||||||
|
t.Run(test.name, func(t *testing.T) {
|
||||||
|
fcmd := fakeexec.FakeCmd{
|
||||||
|
CombinedOutputScript: []fakeexec.FakeAction{
|
||||||
|
func() ([]byte, []byte, error) { return []byte(test.cmdOutput), nil, nil },
|
||||||
|
},
|
||||||
|
}
|
||||||
|
fexec := &fakeexec.FakeExec{
|
||||||
|
CommandScript: []fakeexec.FakeCommandAction{
|
||||||
|
func(cmd string, args ...string) exec.Cmd {
|
||||||
|
return fakeexec.InitFakeCmd(&fcmd, cmd, args...)
|
||||||
|
},
|
||||||
|
},
|
||||||
|
}
|
||||||
|
resizefs := ResizeFs{exec: fexec}
|
||||||
|
|
||||||
|
blockSize, fsSize, err := resizefs.getBtrfsSize(test.devicePath)
|
||||||
|
|
||||||
|
if blockSize != test.blocksize {
|
||||||
|
t.Fatalf("Parse wrong block size value, expect %d, but got %d", test.blocksize, blockSize)
|
||||||
|
}
|
||||||
|
if fsSize != test.blocksize*test.blockCount {
|
||||||
|
t.Fatalf("Parse wrong fs size value, expect %d, but got %d", test.blocksize*test.blockCount, fsSize)
|
||||||
|
}
|
||||||
|
if !test.expectError && err != nil {
|
||||||
|
t.Fatalf("Expect no error but got %v", err)
|
||||||
|
}
|
||||||
|
})
|
||||||
|
}
|
||||||
|
}
|
||||||
func TestNeedResize(t *testing.T) {
|
func TestNeedResize(t *testing.T) {
|
||||||
testcases := []struct {
|
testcases := []struct {
|
||||||
name string
|
name string
|
||||||
@ -60,6 +338,28 @@ func TestNeedResize(t *testing.T) {
|
|||||||
expectError: false,
|
expectError: false,
|
||||||
expectResult: false,
|
expectResult: false,
|
||||||
},
|
},
|
||||||
|
{
|
||||||
|
name: "False - Not needed by size for btrfs",
|
||||||
|
devicePath: "/dev/test1",
|
||||||
|
deviceMountPath: "/mnt/test1",
|
||||||
|
readonly: "0",
|
||||||
|
deviceSize: "20",
|
||||||
|
cmdOutputFsType: "TYPE=btrfs",
|
||||||
|
extSize: "2048",
|
||||||
|
expectError: false,
|
||||||
|
expectResult: false,
|
||||||
|
},
|
||||||
|
{
|
||||||
|
name: "True - needed by size for btrfs",
|
||||||
|
devicePath: "/dev/test1",
|
||||||
|
deviceMountPath: "/mnt/test1",
|
||||||
|
readonly: "0",
|
||||||
|
deviceSize: "2048",
|
||||||
|
cmdOutputFsType: "TYPE=btrfs",
|
||||||
|
extSize: "20",
|
||||||
|
expectError: false,
|
||||||
|
expectResult: true,
|
||||||
|
},
|
||||||
{
|
{
|
||||||
name: "False - Unsupported fs type",
|
name: "False - Unsupported fs type",
|
||||||
devicePath: "/dev/test1",
|
devicePath: "/dev/test1",
|
||||||
@ -87,6 +387,20 @@ func TestNeedResize(t *testing.T) {
|
|||||||
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
|
func(cmd string, args ...string) exec.Cmd { return fakeexec.InitFakeCmd(&fcmd, cmd, args...) },
|
||||||
},
|
},
|
||||||
}
|
}
|
||||||
|
if test.cmdOutputFsType == "TYPE=btrfs" {
|
||||||
|
t.Logf("Adding btrfs size command")
|
||||||
|
fcmd.CombinedOutputScript = append(fcmd.CombinedOutputScript, func() ([]byte, []byte, error) { return []byte(test.deviceSize), nil, nil })
|
||||||
|
fcmd.CombinedOutputScript = append(fcmd.CombinedOutputScript, func() ([]byte, []byte, error) {
|
||||||
|
return []byte(fmt.Sprintf("sectorsize %s\ntotal_bytes 1\n", test.extSize)), nil, nil
|
||||||
|
})
|
||||||
|
|
||||||
|
fexec.CommandScript = append(fexec.CommandScript, func(cmd string, args ...string) exec.Cmd {
|
||||||
|
return fakeexec.InitFakeCmd(&fcmd, cmd, args...)
|
||||||
|
})
|
||||||
|
fexec.CommandScript = append(fexec.CommandScript, func(cmd string, args ...string) exec.Cmd {
|
||||||
|
return fakeexec.InitFakeCmd(&fcmd, cmd, args...)
|
||||||
|
})
|
||||||
|
}
|
||||||
resizefs := ResizeFs{exec: fexec}
|
resizefs := ResizeFs{exec: fexec}
|
||||||
|
|
||||||
needResize, err := resizefs.NeedResize(test.devicePath, test.deviceMountPath)
|
needResize, err := resizefs.NeedResize(test.devicePath, test.deviceMountPath)
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user