diff mbox series

[nfs-utils,4/8] nfsiostat: fix crash when filtering mountstats after unmount

Message ID 20250130142008.3600334-5-sorenson@redhat.com (mailing list archive)
State Handled Elsewhere
Headers show
Series mountstats/nfsiostat: bugfixes for iostat | expand

Commit Message

Frank Sorenson Jan. 30, 2025, 2:20 p.m. UTC
If an unmount occurs between iterations, the filter function will
crash when referencing the 'device' in the new mountstats.  Verify
it exists before trying to access it.

Signed-off-by: Frank Sorenson <sorenson@redhat.com>
---
 tools/nfs-iostat/nfs-iostat.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/tools/nfs-iostat/nfs-iostat.py b/tools/nfs-iostat/nfs-iostat.py
index bf5eead9..08b827c0 100755
--- a/tools/nfs-iostat/nfs-iostat.py
+++ b/tools/nfs-iostat/nfs-iostat.py
@@ -511,10 +511,11 @@  def list_nfs_mounts(givenlist, mountstats):
     devicelist = []
     if len(givenlist) > 0:
         for device in givenlist:
-            stats = DeviceData()
-            stats.parse_stats(mountstats[device])
-            if stats.is_nfs_mountpoint():
-                devicelist += [device]
+            if device in mountstats:
+                stats = DeviceData()
+                stats.parse_stats(mountstats[device])
+                if stats.is_nfs_mountpoint():
+                    devicelist += [device]
     else:
         for device, descr in mountstats.items():
             stats = DeviceData()