Merge pull request NixOS#39164 from ngortheone/master

Fix root volume resizing on EC2 KVM instances (M5, C5, etc)
hickford · Apr 20, 2018 · ec569fc · ec569fc
2 parents 0e09510 + 3a47c7e
commit ec569fc
Showing 1 changed file with 9 additions and 2 deletions.
diff --git a/nixos/modules/system/boot/grow-partition.nix b/nixos/modules/system/boot/grow-partition.nix
@@ -32,8 +32,15 @@ with lib;
       rootDevice="${config.fileSystems."/".device}"
       if [ -e "$rootDevice" ]; then
         rootDevice="$(readlink -f "$rootDevice")"
-        parentDevice="$(lsblk -npo PKNAME "$rootDevice")"
-        TMPDIR=/run sh $(type -P growpart) "$parentDevice" "''${rootDevice#$parentDevice}"
+        parentDevice="$rootDevice"
+        while [ "''${parentDevice%[0-9]}" != "''${parentDevice}" ]; do
+          parentDevice="''${parentDevice%[0-9]}";
+        done
+        partNum="''${rootDevice#''${parentDevice}}"
+        if [ "''${parentDevice%[0-9]p}" != "''${parentDevice}" ] && [ -b "''${parentDevice%p}" ]; then
+          parentDevice="''${parentDevice%p}"
+        fi
+        TMPDIR=/run sh $(type -P growpart) "$parentDevice" "$partNum"
         udevadm settle
       fi
     '';