sanity: Add warning for local hasheqiv server with remote sstate mirrors

We're seeing a lot of users configuring an sstate mirror but not realising that
the default hash equivalenve setting will make this ineffective. Add a warning
to highlight this to the user for the common case.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
(cherry picked from commit ae4eb33b5a6a037348e8f66e3d4f19b58dba8fa2)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>

diff --git a/meta/classes/sanity.bbclass b/meta/classes/sanity.bbclass
index 49eef2f41885606dd3d51867dd894911841bf7cf..a175a1104fedfcbee35da1aa55d4c8ae828919bb 100644 (file)
--- a/meta/classes/sanity.bbclass
+++ b/meta/classes/sanity.bbclass
@@ -941,6 +941,11 @@ def check_sanity_everybuild(status, d):
                     mirror_base = urllib.parse.urlparse(mirror[:-1*len('/PATH')]).path
                     check_symlink(mirror_base, d)
 
+    # Check sstate mirrors aren't being used with a local hash server and no remote
+    hashserv = d.getVar("BB_HASHSERVE")
+    if d.getVar("SSTATE_MIRRORS") and hashserv and hashserv.startswith("unix://") and not d.getVar("BB_HASHSERVE_UPSTREAM"):
+        bb.warn("You are using a local hash equivalence server but have configured an sstate mirror. This will likely mean no sstate will match from the mirror. You may wish to disable the hash equivalence use (BB_HASHSERVE), or use a hash equivalence server alongside the sstate mirror.")
+
     # Check that TMPDIR hasn't changed location since the last time we were run
     tmpdir = d.getVar('TMPDIR')
     checkfile = os.path.join(tmpdir, "saved_tmpdir")