fix(dmesg): fallback in case "dmesg --since" flag doesn't exist in ol…

…der versions (#45) * fix(dmesg): fallback in case dmesg --since flag doesn't exist Signed-off-by: Gyuho Lee <[email protected]> * try Signed-off-by: Gyuho Lee <[email protected]> * Revert "try" This reverts commit a23f9ca. --------- Signed-off-by: Gyuho Lee <[email protected]>
leptonai · Sep 2, 2024 · 0eb10d6 · 0eb10d6
1 parent d0be7d6
commit 0eb10d6
Showing 1 changed file with 7 additions and 2 deletions.
diff --git a/components/dmesg/config.go b/components/dmesg/config.go
@@ -50,11 +50,16 @@ const DefaultDmesgFile = "/var/log/dmesg"
 func DefaultConfig() Config {
 	scanCommands := [][]string{
 		{"cat", DefaultDmesgFile},
-		{"dmesg", "--ctime", "--nopager", "--buffer-size", "163920", "--since", "'1 hour ago'"},
+
+		// some old dmesg versions don't support --since, thus fall back to the one without --since and tail the last 200 lines
+		// ref. https://github.com/leptonai/gpud/issues/32
+		{"dmesg --ctime --nopager --buffer-size 163920 --since '1 hour ago' || dmesg --ctime --nopager --buffer-size 163920 | tail -n 200"},
 	}
 	if _, err := os.Stat(DefaultDmesgFile); os.IsNotExist(err) {
 		scanCommands = [][]string{
-			{"dmesg", "--ctime", "--nopager", "--buffer-size", "163920", "--since", "'1 hour ago'"},
+			// some old dmesg versions don't support --since, thus fall back to the one without --since and tail the last 200 lines
+			// ref. https://github.com/leptonai/gpud/issues/32
+			{"dmesg --ctime --nopager --buffer-size 163920 --since '1 hour ago' || dmesg --ctime --nopager --buffer-size 163920 | tail -n 200"},
 		}
 	}