RemoteFS: don't fail in do_mount if already mounted
This fixes a problem where two different callers are
mounting a share at the same time:
A: check if share is mounted
B: check if share is mounted
A: mount share
B: mount share (fails because it is already mounted)
Closes-Bug: 1780813
Change-Id: I6eca9c9e9eceb7aef357b0ed77bf157ac0010bfe
(cherry picked from commit 2f32c98a65
)
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@ -20,6 +20,7 @@ import os
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import re
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import tempfile
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from oslo_concurrency import processutils
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from oslo_log import log as logging
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import six
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@ -116,8 +117,16 @@ class RemoteFsClient(executor.Executor):
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mnt_cmd.extend(flags)
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mnt_cmd.extend([share, mount_path])
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try:
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self._execute(*mnt_cmd, root_helper=self._root_helper,
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run_as_root=True, check_exit_code=0)
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except processutils.ProcessExecutionError as exc:
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if 'already mounted' in exc.stderr:
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LOG.info("Already mounted: %s", share)
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else:
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LOG.error("Failed to mount %(share)s, reason: %(reason)s",
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{'share': share, 'reason': exc.stderr})
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raise
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def _mount_nfs(self, nfs_share, mount_path, flags=None):
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"""Mount nfs share using present mount types."""
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