[Bug 15136] New: Access to cifs gets stuck for a while (>20s) after disconnecting from network

[samba-bugs@samba.org]

https://bugzilla.samba.org/show_bug.cgi?id=15136

            Bug ID: 15136
           Summary: Access to cifs gets stuck for a while (>20s) after
                    disconnecting from network
           Product: CifsVFS
           Version: 4.x
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P5
         Component: kernel fs
          Assignee: sfrench@samba.org
          Reporter: wangrong@uniontech.com
        QA Contact: cifs-qa@samba.org
  Target Milestone: ---

Created attachment 17460
  --> https://bugzilla.samba.org/attachment.cgi?id=17460&action=edit
patch for code update

After the network is interrupted, a new SMB request will wait for a
fixed 10 seconds for network reconnection before sending, and return an
error if it times out.

Because 10 seconds is too long and there are operation retries, system
calls (such as stat) take a long time (greater than 20 seconds), which
makes application respond slowly.

Here, the duration of waiting for network reconnection is exposed to
the user space through the mount option, which is convenient for users
and applications to set according to the actual situation.

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