[bitbake-devel] [PATCH 1/1] monitordisk.py: disable the inode checking for some fs

[Robert Yang]

There is an error when use disk monitor on btrfs:
WARNING: The free inode of rootfs is running low (0.000K left)
ERROR: Immediately abort since the disk space monitor action is "ABORT"!

This is beucase some fs formats' statvfs.f_files (inodes) is zero, thus
the statvfs.f_favail (free inodes) is zero, too, this a feature of the
fs, we disable the inode checking for such a fs.

[YOCTO #3609]

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 bitbake/lib/bb/monitordisk.py | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/bitbake/lib/bb/monitordisk.py b/bitbake/lib/bb/monitordisk.py
index 2bd4881..1c1e614 100644
--- a/bitbake/lib/bb/monitordisk.py
+++ b/bitbake/lib/bb/monitordisk.py
@@ -128,7 +128,7 @@ def getDiskData(BBDirs, configuration):
         if not os.path.exists(path):
             bb.utils.mkdirhier(path)
         mountedDev = getMountedDev(path)
-        devDict[mountedDev] = action, path, minSpace, minInode
+        devDict[mountedDev] = [action, path, minSpace, minInode]
 
     return devDict
 
@@ -231,6 +231,13 @@ class diskMonitor:
                 freeInode = st.f_favail
 
                 if self.devDict[dev][3] and freeInode < self.devDict[dev][3]:
+                    # Some fs formats' (e.g., btrfs) statvfs.f_files (inodes) is
+                    # zero, this is a feature of the fs, we disable the inode
+                    # checking for such a fs.
+                    if st.f_files == 0:
+                        logger.warn("Inode check for %s is unavaliable, remove it from disk monitor" % dev)
+                        self.devDict[dev][3] = None
+                        continue
                     # Always show warning, the self.checked would always be False if the action is WARN
                     if self.preFreeI[dev] == 0 or self.preFreeI[dev] - freeInode > self.inodeInterval and not self.checked[dev]:
                         logger.warn("The free inode of %s is running low (%.3fK left)" % (dev, freeInode / 1024.0))
-- 
1.7.11.2