From f8b89ba58952fdaf878f42d792c02bb094362fc8 Mon Sep 17 00:00:00 2001 From: Richard Purdie Date: Tue, 7 Jul 2026 11:07:37 +0100 Subject: [PATCH] bitbake: utils: Add NFS EEXISTS/isdir failure workaround We're seeing cases where we see tracebacks when creating directories in SSTATE_DIR on an NFS server. The issue is that we see EEXISTS being returned but isdir() is False, likely when multiple clients try and create the same directory at the same time. This is likely a relatively well known issue with NFS's attribute cache. There is also a way to clear the attribute cache, which is to call opendir() on the parent directory. That is what this workaround does. In the rare case we're about to fail, try that using os.listdir() and see if it helps. Testing showed that it would "fix" several cases where we'd have had failures otherwise. [YOCTO #16351] (Bitbake rev: cff3be6f664f8f07a40727ff63eeeb24d6f5e00b) Signed-off-by: Richard Purdie (cherry picked from commit 3a99c26fa581d70ed67bd08a5e0e0d0b18369a7c) Signed-off-by: Yoann Congal Signed-off-by: Paul Barker --- bitbake/lib/bb/utils.py | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) diff --git a/bitbake/lib/bb/utils.py b/bitbake/lib/bb/utils.py index 1b4fb93a30..976fe73bc1 100644 --- a/bitbake/lib/bb/utils.py +++ b/bitbake/lib/bb/utils.py @@ -763,8 +763,20 @@ def mkdirhier(directory): try: os.makedirs(directory) except OSError as e: - if e.errno != errno.EEXIST or not os.path.isdir(directory): + if e.errno != errno.EEXIST: raise e + if os.path.isdir(directory): + return + # We can end up here if there is a race between two mkdirs on an NFS mount, + # which happens more often with sstate that you'd think. The server returns + # EEXIST but the local attribute cache is out of date. It can be refreshed with + # an opendir call, so try that (via listdir) and check the directory again + # before we really fail. + os.listdir(os.path.dirname(directory)) + if os.path.isdir(directory): + return + bb.warn("mkdir: %s is not a directory?") + raise e def movefile(src, dest, newmtime = None, sstat = None): """Moves a file from src to dest, preserving all permissions and