[lxc-devel] [lxd/master] Ignore missing WAL files when reproducing snapshots

[freeekanayaka on Github]

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From d080b846ba53ce0284e0eba12146f08b3b86f94e Mon Sep 17 00:00:00 2001
From: Free Ekanayaka <free.ekanayaka at canonical.com>
Date: Wed, 26 Jun 2019 18:12:59 +0200
Subject: [PATCH] Ignore missing WAL files when reproducing snapshots

---
 lxd/cluster/migrate.go | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/lxd/cluster/migrate.go b/lxd/cluster/migrate.go
index 07caca85c8..47ecd931b8 100644
--- a/lxd/cluster/migrate.go
+++ b/lxd/cluster/migrate.go
@@ -205,9 +205,13 @@ func writeRaftSnapshot(dir string, index uint64) error {
 		return err
 	}
 
-	wal, err := ioutil.ReadFile(filepath.Join(dir, "db.bin-wal"))
-	if err != nil {
-		return err
+	walPath := filepath.Join(dir, "db.bin-wal")
+	wal := []byte{}
+	if shared.PathExists(walPath) {
+		wal, err = ioutil.ReadFile(walPath)
+		if err != nil {
+			return err
+		}
 	}
 
 	buf := encodeRaftSnapshot(db, wal)