fix: open the filesystem as read-only

sudomateo · shanduur · commit 8f49dd2209b7 · 2026-02-06T08:51:41.000+01:00
Updated `ReadFromVolume` to open the filesystem it's attempting to read from as read-only. This allows `vfat` cloud init volumes to be successfully read by Talos Linux. This change was made here and not in `pkg/xfs/fsopen/fsopen_linux.go` so that it only applies to volumes that are being read for cloud init configuration, not all volumes. Fixes #12647. Signed-off-by: Mateusz Urbanek <mateusz.urbanek@siderolabs.com> (cherry picked from commit 782cc50)
diff --git a/internal/app/machined/pkg/runtime/v1alpha1/platform/internal/blockutils/blockutils.go b/internal/app/machined/pkg/runtime/v1alpha1/platform/internal/blockutils/blockutils.go
@@ -154,6 +154,7 @@ func ReadFromVolume(ctx context.Context, r state.State, labels []string, cb func
 		mount.WithFsopen(
 			volumeStatus.TypedSpec().Filesystem.String(),
 			fsopen.WithSource(volumeStatus.TypedSpec().MountLocation),
+			fsopen.WithBoolParameter("ro"),
 		),
 		mount.WithDetached(),
 	)

Original file line number	Diff line number	Diff line change
`@@ -154,6 +154,7 @@ func ReadFromVolume(ctx context.Context, r state.State, labels []string, cb func`
`154`	`154`	`mount.WithFsopen(`
`155`	`155`	`volumeStatus.TypedSpec().Filesystem.String(),`
`156`	`156`	`fsopen.WithSource(volumeStatus.TypedSpec().MountLocation),`
	`157`	`+ fsopen.WithBoolParameter("ro"),`
`157`	`158`	`),`
`158`	`159`	`mount.WithDetached(),`
`159`	`160`	`)`