fix: Add a subvolume syscall exception for btrfs (#454) (#473)

lablup · Jun 15, 2022 · db7063d · db7063d
1 parent b5d3565
commit db7063d
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diff --git a/changes/473.fix.md b/changes/473.fix.md
@@ -0,0 +1 @@
+Let it ignore a permission error when calling Python `os.statvfs()` on a btrfs subvolume (e.g., `/var/lib/docker/btrfs`) as the intention of the call is to retrieve filesystem-level disk usage rather than subvolume statistics
diff --git a/src/ai/backend/agent/docker/intrinsic.py b/src/ai/backend/agent/docker/intrinsic.py
@@ -371,6 +371,8 @@ def get_disk_stat():
             per_disk_stat = {}
             for disk_info in psutil.disk_partitions():
                 if disk_info.fstype not in pruned_disk_types:
+                    if '/var/lib/docker/btrfs' == disk_info.mountpoint:
+                        continue
                     dstat = os.statvfs(disk_info.mountpoint)
                     disk_usage = Decimal(dstat.f_frsize * (dstat.f_blocks - dstat.f_bavail))
                     disk_capacity = Decimal(dstat.f_frsize * dstat.f_blocks)