- Introduce option for hardcoding providers' names into metadata.

  It allows to fix problems when last provider's sector is shared between few
  providers.
- Bump version number for CONCAT and STRIPE and add code for backward
  compatibility.
- Do not bump version number of MIRROR, as it wasn't officially introduced yet.
  Even if someone started to play with it, there is no big deal, because
  wrong MD5 sum of metadata will deny those providers.
- Update manual pages.
- Add version history to g_(stripe|concat).h files.

1 files changed, 10 insertions, 0 deletions

diff --git a/sys/geom/concat/g_concat.c b/sys/geom/concat/g_concat.c
index 480b30d..8103ea6 100644
--- a/sys/geom/concat/g_concat.c
+++ b/sys/geom/concat/g_concat.c
@@ -567,6 +567,15 @@ g_concat_taste(struct g_class *mp, struct g_provider *pp, int flags __unused)
 		    pp->name);
 		return (NULL);
 	}
+	/*
+	 * Backward compatibility:
+	 * There was no md_provider field in earlier versions of metadata.
+	 */
+	if (md.md_version < 3)
+		bzero(md.md_provider, sizeof(md.md_provider));
+
+	if (md.md_provider[0] != '\0' && strcmp(md.md_provider, pp->name) != 0)
+		return (NULL);
 
 	/*
 	 * Let's check if device already exists.
@@ -650,6 +659,7 @@ g_concat_ctl_create(struct gctl_req *req, struct g_class *mp)
 	md.md_id = arc4random();
 	md.md_no = 0;
 	md.md_all = *nargs - 1;
+	bzero(md.md_provider, sizeof(md.md_provider));
 
 	/* Check all providers are valid */
 	for (no = 1; no < *nargs; no++) {