lxd/storage/drivers/powerflex: Cleanup error messages

Signed-off-by: Julian Pelizäus <[email protected]>

lxd/storage/drivers/driver_powerflex.go

@@ -1,6 +1,7 @@
 package drivers
 
 import (
+	"errors"
 	"fmt"
 	"strings"
 
@@ -128,7 +129,7 @@ func (d *powerflex) FillConfig() error {
 			d.config["powerflex.mode"] = connectors.TypeSDC
 		} else {
 			// Fail if no PowerFlex mode can be discovered.
-			return fmt.Errorf("Failed to discover PowerFlex mode")
+			return errors.New("Failed to discover PowerFlex mode")
 		}
 	}
 
@@ -152,17 +153,17 @@ func (d *powerflex) Create() error {
 	// Since those aren't any cluster member specific keys the general validation
 	// rules allow empty strings in order to create the pending storage pools.
 	if d.config["powerflex.pool"] == "" {
-		return fmt.Errorf("The powerflex.pool cannot be empty")
+		return errors.New("The powerflex.pool cannot be empty")
 	}
 
 	if d.config["powerflex.gateway"] == "" {
-		return fmt.Errorf("The powerflex.gateway cannot be empty")
+		return errors.New("The powerflex.gateway cannot be empty")
 	}
 
 	if d.config["powerflex.mode"] == connectors.TypeSDC {
 		// In case the SDC mode is used the SDTs cannot be set.
 		if d.config["powerflex.sdt"] != "" {
-			return fmt.Errorf("The powerflex.sdt config key is specific to the NVMe/TCP mode")
+			return fmt.Errorf("The %q config key is specific to the %q mode", "powerflex.sdt", connectors.TypeNVME)
 		}
 	}
 
@@ -274,7 +275,7 @@ func (d *powerflex) Validate(config map[string]string) error {
 	// Ensure powerflex.mode cannot be changed to avoid leaving volume mappings
 	// and to prevent disturbing running instances.
 	if oldMode != "" && oldMode != newMode {
-		return fmt.Errorf("PowerFlex mode cannot be changed")
+		return errors.New("PowerFlex mode cannot be changed")
 	}
 
 	// Check if the selected PowerFlex mode is supported on this node.

lxd/storage/drivers/driver_powerflex_utils.go

@@ -1193,12 +1193,12 @@ func (d *powerflex) resolvePool() (*powerFlexStoragePool, error) {
 func (d *powerflex) getVolumeName(vol Volume) (string, error) {
 	volUUID, err := uuid.Parse(vol.config["volatile.uuid"])
 	if err != nil {
-		return "", fmt.Errorf(`Failed parsing "volatile.uuid" from volume %q: %w`, vol.name, err)
+		return "", fmt.Errorf("Failed parsing %q from volume %q: %w", "volatile.uuid", vol.name, err)
 	}
 
 	binUUID, err := volUUID.MarshalBinary()
 	if err != nil {
-		return "", fmt.Errorf(`Failed marshalling the "volatile.uuid" of volume %q to binary format: %w`, vol.name, err)
+		return "", fmt.Errorf("Failed marshalling the %q of volume %q to binary format: %w", "volatile.uuid", vol.name, err)
 	}
 
 	// The volume's name in base64 encoded format.

lxd/storage/drivers/driver_powerflex_volumes.go

@@ -349,7 +349,7 @@ func (d *powerflex) DeleteVolume(vol Volume, op *operations.Operation) error {
 
 		err = os.Remove(mountPath)
 		if err != nil && !os.IsNotExist(err) {
-			return fmt.Errorf("Failed to remove '%s': %w", mountPath, err)
+			return fmt.Errorf("Failed to remove %q: %w", mountPath, err)
 		}
 	}
 
@@ -577,7 +577,7 @@ func (d *powerflex) SetVolumeQuota(vol Volume, size string, allowUnsafeResize bo
 
 	// PowerFlex supports increasing of size only.
 	if sizeBytes < oldSizeBytes {
-		return fmt.Errorf("Volume capacity can only be increased")
+		return errors.New("Volume capacity can only be increased")
 	}
 
 	// Block image volumes cannot be resized because they have a readonly snapshot that doesn't get