The RSYNC error: checksum error is a common issue that users face while trying to transfer or synchronize files between different systems. RSYNC, an open-source data mirroring utility widely used in Unix-based systems, can sometimes throw checksum errors due to various reasons like corrupted files, disk issues, or network problems.
In order to resolve this issue, you can follow the steps outlined below:
Firstly, try to identify the problematic files. Usually, when the RSYNC error appears, it would specify the file which is causing the issue. Otherwise, run the RSYNC command again in verbose mode to identify the file causing the error:
```
rsync -avz —progress source destination
```
In the above command, ‘-avz’ means archive mode, verbose output, and compression. ‘—progress’ allows you to see the progress of the file transfer.
Once you’ve identified the problematic files, you can try to fix them:
1. Corrupted Files: If the files are corrupted, you can either try to fix them using file repair tools suitable for the type of the file. For example, `fsck` for Linux systems or `chkdsk` for Windows. Note that this might not always be possible. In such cases, you might want to get a fresh copy of the file.
2. Disk Issues: If the disk where the files reside has issues, you can try disk repair tools like `fsck` for Linux or `chkdsk` for Windows. These tools can scan the disk for errors and try to fix them automatically.
3. Network Problems: Sometimes, network issues could also cause this error. In this case, you can try to ping the destination server to ensure that your source server has a good network connection and vice versa. If there are network issues, you’ll need to fix them before rerunning the RSYNC command.
You can also run RSYNC with the checksum option (`-c`), which forces it to implement a full-file checksum for all files. Though this option makes the process longer because it runs a checksum even if the file size and timestamp haven’t changed, it correctly copies the files even if there was a checksum error.
```
rsync -avzc —progress source destination
```
If the error persists after the above steps, consider consulting the official RSYNC documentation or online community for specific situations, which are very resourceful for troubleshooting.
Note: Always make sure to perform regular backups of your files, especially when you’re dealing with large and important data sets.
Sources:
1. Rsync Man Page – www.samba.org
2. Rsolving Rsync Problems – www.ibm.com
3. Rsync Tutorial – www.tecmint.com
