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| author | Andrew Laski <andrew.laski@rackspace.com> | 2013-02-14 17:02:06 -0500 |
|---|---|---|
| committer | Andrew Laski <andrew.laski@rackspace.com> | 2013-02-14 17:02:06 -0500 |
| commit | 145759f6ed2fb7ceefa640a1a7215099746d41ba (patch) | |
| tree | 27551bf700c91aba4f308036592985c28f8327e6 /nova | |
| parent | dbdd6945d72fdc1719f88c92d961f20eccd5d01d (diff) | |
[xenapi] Cooperatively yield during sparse copy
On a resize down the sparse copy blocks other operations from running on
the compute node, and can take a long time to finish. This patch adds a
greenthread yield to not block other things from happening on the
compute node.
Change-Id: I1287a6a0bb3157ad0e5eafe53b02db21849650fa
Diffstat (limited to 'nova')
| -rw-r--r-- | nova/virt/xenapi/vm_utils.py | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/nova/virt/xenapi/vm_utils.py b/nova/virt/xenapi/vm_utils.py index 97e9e87f8..3bfe6de09 100644 --- a/nova/virt/xenapi/vm_utils.py +++ b/nova/virt/xenapi/vm_utils.py @@ -2083,6 +2083,7 @@ def _sparse_copy(src_path, dst_path, virtual_size, block_size=4096): break data = src.read(min(block_size, left)) + greenthread.sleep(0) duration = time.time() - start_time compression_pct = float(skipped_bytes) / bytes_read * 100 |