finalize complete backup: data/README.md

data/README.md

@@ -1,20 +1,20 @@
-# Full machine backup
+# Complete machine backup
 
 This directory contains an uncompressed POSIX tar stream split into 15 GiB
 parts. Parts must be concatenated in lexical order before extraction. The tar
 stream preserves hidden files, numeric ownership, modes, timestamps, hard
 links, symbolic links, sparse files, ACLs, xattrs, and SELinux metadata where
-available.
-
-Each part has a companion `.sha256` file. Verify all downloaded parts before
-extraction. Extraction as root is required to restore numeric ownership and
-all privileged metadata.
+available. Each part has a `.sha256` sidecar.
 
 Source snapshot: `/zfspool/zangyihe/`
 
-Restore:
+- Parts: `00000` through `00063` (64 contiguous parts)
+- Total archive stream: `1021145485312` bytes
+
+Verify and restore:
 
 ```bash
+sha256sum -c zfspool-zangyihe.tar.part-*.sha256
 mkdir -p /restore/zfspool-zangyihe
 cat zfspool-zangyihe.tar.part-[0-9][0-9][0-9][0-9][0-9] | tar --extract --acls --xattrs --selinux --numeric-owner --sparse -C /restore/zfspool-zangyihe
 ```