Introduction
If you encounter checksum mismatch errors when using NFS (Network File Storage), this guide will help you resolve the issue.
Example Error Message:
[Error] [Thread 2] Received an error: checksum mismatch for a.zip,
expected: 093fe11b2e268799b5eb6dabd7c4657ed4c9316e, actual:
1e12a0c07bfd120431c64b658fa267d2ec2f2e64
[Error] checksum mismatch for a.zip, expected:
093fe11b2e268799b5eb6dabd7c4657ed4c9316e, actual: 1e12a0c07bfd120431c64b658fa267d2ec2f2e64
Possible Causes:
Checksum mismatch errors can arise due to network issues, such as outages, occurring during the file save process to a specific node.
While some nodes may successfully store a file, a disruption in the network may result in an incomplete save on another node, leading to discrepancies in checksum values.
To further investigate the issue, check the problematic checksum and review the deployment time of the SHA-1 file.
Additionally, examine the status of the Artifactory node and determine if there were any resource fluctuations or network disruptions at the time.
Resolution
To address the checksum mismatch issue, please follow these steps:
1. Delete the Corrupted File:
Remove the affected file from the problematic node.
2. Copy the Intact File:
Transfer a correctly saved version of the file from a node where it is intact to the
problematic node.
3. Redeploy if Necessary:
If you cannot locate a valid copy in any HA nodes, consider redeploying the file.
Additional Recommendation:
To maintain data integrity, it is advisable to regularly compare and verify checksums across all nodes. Below is a script that can assist in this:
Prerequisites:
Ensure you have the shasum command available on your system.
How to Run the Script:
1. Open your terminal.
2. Navigate to the file storage location:
For example:
cd /var/opt/jfrog/artifactory/data/artifactory/filestore
or
cd /NFS_MOUNT_PATH_OF_FileStore
3. Run the following script:
find . -type f | awk '
{
# Get the file path and the filename
file = $0
n = split(file, arr, "/")
filename = arr[n]
# Calculate the SHA-1 checksum of the file
cmd = "shasum -a 1 \"" file "\" | awk \047{print $1}\047"
cmd | getline computed_sha1
close(cmd)
# Check if the filename matches the computed SHA-1 checksum
if (filename != computed_sha1) {
print "File does not match SHA-1 checksum: " file
}
}'
Outcome:
Running this script will help ensure that all files in your system match their expected checksums, thereby enhancing your data integrity management practices.
If you have any questions or need further assistance, please do not hesitate to reach out to the support team.