> Source: [sk183139](https://support.checkpoint.com/results/sk/sk183139)

# sk183139 - FWD process stops working on VSX Cluster after reverting to snapshot or auto-cloning of an SGM

| Property | Value |
|----------|-------|
| Solution ID | sk183139 |
| Date Created | 2025-02-24 |
| Last Modified | 2025-03-02 |
| Technical Level | Advanced |
| Products | Security Gateway, Scalable Platforms |
| Versions | R81.20, R81.10 (EOS), R81.20, R81.10 (EOS) |
| OS | Gaia |

## Symptoms

- * FWD process stops working on VSX Cluster after reverting to snapshot or auto-cloning of an SGM.

* Starting FWD in debug mode (with "`fwd -d`") you see this error message:  

  ```
  
  IpsPackageDeployer::curDirectoryPath: failed to read cur_link
  terminate called after throwing an instance of 'std::logic_error'
    what():  basic_string::_M_construct null not valid
  Aborted (core dumped)
  ```

  <br />

## Cause

Symbolic links are missing in the *$FWDIR/ips/update/* directory.

This is an example of the directory with the links:

```
# ls -l $FWDIR/ips/update/
total 284
drwx------ 2 admin root  4096 Feb 10 05:57 0
drwx------ 2 admin root  4096 Feb  1 04:50 1
drwx------ 2 admin root  4096 Feb 10 05:57 2
lrwxrwxrwx 1 admin root    49 Feb 10 05:56 cur -> /opt/CPsuite-R81.10/fw1/CTX/CTX00001/ips/update/0
lrwxrwxrwx 1 admin users   49 Aug 14 08:35 cur.BKP -> /opt/CPsuite-R81.10/fw1/CTX/CTX00001/ips/update/1
-rw-rw---- 1 admin root   222 Feb 11 01:54 ips_status.C
lrwxrwxrwx 1 admin root    49 Feb 10 05:53 latest -> /opt/CPsuite-R81.10/fw1/CTX/CTX00001/ips/update/0
```

<br />

## Solution

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