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VMCache: check if vm_cache_endpoint file exists before VMCache server runs

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There is an issue that more than one VMCache server can run with same
vm_cache_endpoint file together.
The cause is factory try to remove vm_cache_endpoint file before VMCache
server runs.
Change it to check if vm_cache_endpoint file exists before VMCache server
runs to handle the issue.

Fixes: #1385

Signed-off-by: Hui Zhu <teawater@hyper.sh>
This commit is contained in:
Hui Zhu 2019-03-19 17:12:09 +08:00
parent 432eda0f83
commit b6f382ef6f
1 changed files with 4 additions and 1 deletions
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5
cli/factory.go
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@ -79,7 +79,10 @@ func getUnixListener(path string) (net.Listener, error) {
if err != nil {
return nil, err
}
if err = unix.Unlink(path); err != nil && !os.IsNotExist(err) {
_, err = os.Stat(path)
if err == nil {
return nil, fmt.Errorf("%s already exist. Please stop running VMCache server and remove %s", path, path)
} else if !os.IsNotExist(err) {
return nil, err
}
l, err := net.Listen("unix", path)