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functional/agent: copy file, instead of renaming

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To retain failure logs in CI testing.

Signed-off-by: Gyuho Lee <leegyuho@amazon.com>
This commit is contained in:
Gyuho Lee 2019-08-08 08:12:05 -07:00
parent d1c7be24b0
commit 72e00cea3a
1 changed files with 22 additions and 1 deletions
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23
functional/agent/utils.go
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@ -15,6 +15,7 @@
package agent
import (
"io"
"net"
"net/url"
"os"
@ -36,7 +37,8 @@ func archive(baseDir, etcdLogPath, dataDir string) error {
return err
}
if err := os.Rename(etcdLogPath, filepath.Join(dir, "etcd.log")); err != nil {
dst := filepath.Join(dir, "etcd.log")
if err := copyFile(etcdLogPath, dst); err != nil {
if !os.IsNotExist(err) {
return err
}
@ -79,6 +81,25 @@ func getURLAndPort(addr string) (urlAddr *url.URL, port int, err error) {
return urlAddr, port, err
}
func copyFile(src, dst string) error {
f, err := os.Open(src)
if err != nil {
return err
}
defer f.Close()
w, err := os.Create(dst)
if err != nil {
return err
}
defer w.Close()
if _, err = io.Copy(w, f); err != nil {
return err
}
return w.Sync()
}
func cleanPageCache() error {
// https://www.kernel.org/doc/Documentation/sysctl/vm.txt
// https://github.com/torvalds/linux/blob/master/fs/drop_caches.c