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| author | Pádraig Brady <pbrady@redhat.com> | 2012-09-19 23:52:22 +0100 |
|---|---|---|
| committer | Pádraig Brady <pbrady@redhat.com> | 2012-09-26 21:17:35 +0100 |
| commit | 41808571f148c6d3720bcf09d997fe932d259f6c (patch) | |
| tree | 4a12694b20b244bbc937b2ced01c0b3d7ccef914 | |
| parent | 064506df6dc21efb9bdde21f958fc733563e0b48 (diff) | |
optimize slightly device lookup with LXC umounts
Only canonicalize the path once, rather than for
each entry in /proc/mounts.
Change-Id: I6e582b44f171a1c4cc151d615e9dcfae1e590a53
Reported-by: Kevin L. Mitchell
| -rw-r--r-- | nova/virt/disk/api.py | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/nova/virt/disk/api.py b/nova/virt/disk/api.py index 16bd9fe04..0cddcfa69 100644 --- a/nova/virt/disk/api.py +++ b/nova/virt/disk/api.py @@ -208,10 +208,11 @@ class _DiskImage(object): @staticmethod def _device_for_path(path): device = None + path = os.path.realpath(path) with open("/proc/mounts", 'r') as ifp: for line in ifp: fields = line.split() - if fields[1] == os.path.realpath(path): + if fields[1] == path: device = fields[0] break return device |