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cephfs: added support for snapshot-backed volumes

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This commit implements most of
docs/design/proposals/cephfs-snapshot-shallow-ro-vol.md design document;
specifically (de-)provisioning of snapshot-backed volumes, mounting such
volumes as well as mounting pre-provisioned snapshot-backed volumes.

Signed-off-by: Robert Vasek <robert.vasek@cern.ch>
This commit is contained in:
Robert Vasek
2022-04-06 15:26:07 +02:00
committed by mergify[bot]
parent 0807fd2e6c
commit fd7559a903
7 changed files with 710 additions and 107 deletions
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8
internal/cephfs/mounter/fuse.go
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@ -118,8 +118,8 @@ func (m *FuseMounter) Mount(
func (m *FuseMounter) Name() string { return "Ceph FUSE driver" }
func UnmountVolume(ctx context.Context, mountPoint string) error {
if _, stderr, err := util.ExecCommand(ctx, "umount", mountPoint); err != nil {
func UnmountVolume(ctx context.Context, mountPoint string, opts ...string) error {
if _, stderr, err := util.ExecCommand(ctx, "umount", append([]string{mountPoint}, opts...)...); err != nil {
err = fmt.Errorf("%w stderr: %s", err, stderr)
if strings.Contains(err.Error(), fmt.Sprintf("umount: %s: not mounted", mountPoint)) ||
strings.Contains(err.Error(), "No such file or directory") {
@ -149,3 +149,7 @@ func UnmountVolume(ctx context.Context, mountPoint string) error {
return nil
}
func UnmountAll(ctx context.Context, mountPoint string) error {
return UnmountVolume(ctx, mountPoint, "--all-targets")
}