Merge pull request #1152 from shundhammer/huha-ignore-probe-errors-ma…

…ster

L3 Veritas Volume Manager: Allow to Ignore Probe Errors (master)

package/yast2-storage-ng.changes

@@ -1,4 +1,10 @@
 -------------------------------------------------------------------
+Tue Oct 20 15:36:03 UTC 2020 - Stefan Hundhammer <shundhammer@suse.com>
+
+- Added $LIBSTORAGE_IGNORE_PROBE_ERRORS environment variable
+  to ignore storage probing errors (bsc#1177332)
+- 4.3.16
+-------------------------------------------------------------------
 Wed Aug 26 10:08:03 UTC 2020 - Imobach Gonzalez Sosa <igonzalezsosa@suse.com>
 
 - Unify profile element paths (bsc#1175680).

package/yast2-storage-ng.spec

@@ -16,7 +16,7 @@
 #
 
 Name:           yast2-storage-ng
-Version:        4.3.15
+Version:        4.3.16
 Release:        0
 Summary:        YaST2 - Storage Configuration
 License:        GPL-2.0-only OR GPL-3.0-only

src/lib/y2storage/callbacks/probe.rb

@@ -31,6 +31,31 @@ module Callbacks
     class Probe < Storage::ProbeCallbacksV3
       include LibstorageCallback
 
+      # Callback for libstorage-ng to report an error to the user.
+      #
+      # If the $LIBSTORAGE_IGNORE_PROBE_ERRORS environment variable is set,
+      # this just returns 'true', i.e. the error is ignored.
+      #
+      # Otherwise, this displays the error and prompts the user if the error
+      # should be ignored.
+      #
+      # @note If the user rejects to continue, the method will return false
+      # which implies libstorage-ng will raise the corresponding exception for
+      # the error.
+      #
+      # See Storage::Callbacks#error in libstorage-ng
+      #
+      # @param message [String] error title coming from libstorage-ng
+      #   (in the ASCII-8BIT encoding! see https://sourceforge.net/p/swig/feature-requests/89/)
+      # @param what [String] details coming from libstorage-ng (in the ASCII-8BIT encoding!)
+      # @return [Boolean] true will make libstorage-ng ignore the error, false
+      #   will result in a libstorage-ng exception
+      def error(message, what)
+        return true if StorageEnv.instance.ignore_probe_errors?
+
+        super(message, what)
+      end
+
       # Callback for missing commands during probing.
       #
       # @param message [String] error title coming from libstorage-ng

src/lib/y2storage/storage_env.rb

@@ -32,7 +32,10 @@ class StorageEnv
 
     ENV_ACTIVATE_LUKS = "YAST_ACTIVATE_LUKS".freeze
 
+    ENV_LIBSTORAGE_IGNORE_PROBE_ERRORS = "LIBSTORAGE_IGNORE_PROBE_ERRORS".freeze
+
     private_constant :ENV_MULTIPATH, :ENV_BIOS_RAID, :ENV_ACTIVATE_LUKS
+    private_constant :ENV_LIBSTORAGE_IGNORE_PROBE_ERRORS
 
     def initialize
       @active_cache = {}
@@ -67,6 +70,21 @@ def activate_luks?
       active?(ENV_ACTIVATE_LUKS, true)
     end
 
+    # Whether errors during libstorage probing should be ignored.
+    #
+    # See bsc#1177332:
+    #
+    # Some storage technologies like Veritas Volume Manager use disk labels
+    # like "sun" that we don't support in libstorage / storage-ng. Setting the
+    # LIBSTORAGE_IGNORE_PROBE_ERRORS env var gives the admin a chance to use
+    # the YaST partitioner despite that. Those disks will show up like empty
+    # disks and not cause an error pop-up for each one.
+    def ignore_probe_errors?
+      result = active?(ENV_LIBSTORAGE_IGNORE_PROBE_ERRORS)
+      log.info("Ignoring libstorage probe errors") if result
+      result
+    end
+
     private
 
     # Whether the env variable is active

test/y2storage/callbacks/probe_test.rb

@@ -28,6 +28,25 @@
   describe "#error" do
     include_examples "general #error examples"
     include_examples "default #error true examples"
+
+    context "without LIBSTORAGE_IGNORE_PROBE_ERRORS" do
+      before { mock_env(env_vars) }
+      let(:env_vars) { {} }
+      it "it displays an error pop-up" do
+        expect(Yast::Report).to receive(:yesno_popup)
+        subject.error("probing failed", "")
+      end
+    end
+
+    context "with LIBSTORAGE_IGNORE_PROBE_ERRORS set" do
+      before { mock_env(env_vars) }
+      after { mock_env({}) } # clean up for future tests
+      let(:env_vars) { { "LIBSTORAGE_IGNORE_PROBE_ERRORS" => "1" } }
+      it "does not display an error pop-up and returns true" do
+        expect(Yast::Report).not_to receive(:yesno_popup)
+        expect(subject.error("probing failed", "")).to be true
+      end
+    end
   end
 
   describe "#begin" do