Create genesis.tar.bz2 in solana-genesis (#7039)

* Use clap_utils

* Create genesis.tar.bz2 in solana-genesis

* Remove shell-based genesis.tar.bz2 generation

* Make Option=>Result conv more rusty

* stop using solana_logger

* Simplify by just using vec!

* clean up abit

ledger/src/blocktree.rs

@@ -1856,6 +1856,36 @@ pub fn create_new_ledger(ledger_path: &Path, genesis_config: &GenesisConfig) ->
 
     blocktree.insert_shreds(shreds, None, false)?;
     blocktree.set_roots(&[0])?;
+    // Explicitly close the blocktree before we create the archived genesis file
+    drop(blocktree);
+
+    let archive_path = ledger_path.join("genesis.tar.bz2");
+    let args = vec![
+        "jcfhS",
+        archive_path.to_str().unwrap(),
+        "-C",
+        ledger_path.to_str().unwrap(),
+        "genesis.bin",
+        "rocksdb",
+    ];
+    let output = std::process::Command::new("tar")
+        .args(&args)
+        .output()
+        .unwrap();
+    if !output.status.success() {
+        use std::io::{Error as IOError, ErrorKind};
+        use std::str::from_utf8;
+        eprintln!("tar stdout: {}", from_utf8(&output.stdout).unwrap_or("?"));
+        eprintln!("tar stderr: {}", from_utf8(&output.stderr).unwrap_or("?"));
+
+        return Err(BlocktreeError::IO(IOError::new(
+            ErrorKind::Other,
+            format!(
+                "Error trying to generate snapshot archive: {}",
+                output.status
+            ),
+        )));
+    }
 
     Ok(last_hash)
 }