/// <summary>Load the snapshots section from fsimage.</summary>
/// <remarks>
/// Load the snapshots section from fsimage. Also add snapshottable feature
/// to snapshottable directories.
/// </remarks>
/// <exception cref="System.IO.IOException"/>
public void LoadSnapshotSection(InputStream @in)
{
SnapshotManager sm = fsn.GetSnapshotManager();
FsImageProto.SnapshotSection section = FsImageProto.SnapshotSection.ParseDelimitedFrom
(@in);
int snum = section.GetNumSnapshots();
sm.SetNumSnapshots(snum);
sm.SetSnapshotCounter(section.GetSnapshotCounter());
foreach (long sdirId in section.GetSnapshottableDirList())
{
INodeDirectory dir = fsDir.GetInode(sdirId).AsDirectory();
if (!dir.IsSnapshottable())
{
dir.AddSnapshottableFeature();
}
else
{
// dir is root, and admin set root to snapshottable before
dir.SetSnapshotQuota(DirectorySnapshottableFeature.SnapshotLimit);
}
sm.AddSnapshottable(dir);
}
LoadSnapshots(@in, snum);
}
/// <exception cref="System.IO.IOException"/>
private void DumpSnapshotSection(InputStream @in)
{
@out.Write("<SnapshotSection>");
FsImageProto.SnapshotSection s = FsImageProto.SnapshotSection.ParseDelimitedFrom(
@in);
O("snapshotCounter", s.GetSnapshotCounter());
if (s.GetSnapshottableDirCount() > 0)
{
@out.Write("<snapshottableDir>");
foreach (long id in s.GetSnapshottableDirList())
{
O("dir", id);
}
@out.Write("</snapshottableDir>\n");
}
for (int i = 0; i < s.GetNumSnapshots(); ++i)
{
FsImageProto.SnapshotSection.Snapshot pbs = FsImageProto.SnapshotSection.Snapshot
.ParseDelimitedFrom(@in);
O("snapshot", pbs.GetSnapshotId());
}
@out.Write("</SnapshotSection>\n");
}