> Source: [sk170952](https://support.checkpoint.com/results/sk/sk170952)

# sk170952 - Snapshot revert fails during boot

| Property | Value |
|----------|-------|
| Solution ID | sk170952 |
| Date Created | 2020-12-14 |
| Last Modified | 2020-12-15 |
| Technical Level | Advanced |
| Products | Security Gateway, Security Management Server |
| Versions | R82.10, R82, R81.20, R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * during snapshot revert, it fails at boot:

  ```
  
  [/sbin/fsck.ext3 (1) -- /var/log] fsck.ext3 -a /dev/mapper/vg_splat-lv_log 
  fsck.ext3: Bad magic number in super-block while trying to open /dev/mapper/vg_splat-lv_log
  /dev/mapper/vg_splat-lv_log: 
  The superblock could not be read or does not describe a correct ext2
  filesystem.  If the device is valid and it really contains an ext2
  filesystem (and not swap or ufs or something else), then the superblock
  is corrupt, and you might try running e2fsck with an alternate superblock:
  
  e2fsck -b 8193 <device>
  
  [FAILED]
  
  *** An error occurred during the file system check.
  *** Dropping you to a shell; the system will reboot
  *** when you leave the shell.
  (Repair filesystem) 1 # 
  ```

  <br />

* At Repair filesystem prompt, running " fsck -f -y" or "e2fsck -b 8193 \<device\>" does not resolve the error.

## Cause

The snapshot was collected from ext3 files system, but the appliance to restore the snapshot is freshly build with xfs files system.

Starting in R80.20, Gaia fresh install has a default xfs file system. Any device that is upgraded from a previous version still uses ext3 files system.

## Solution

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