[
https://issues.apache.org/jira/browse/HDDS-9802?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17834459#comment-17834459
]
Hemant Kumar commented on HDDS-9802:
------------------------------------
As part of the change [#6386,|https://github.com/apache/ozone/pull/6386] a
repair tool was added to fix the snapshot chain.
Here are the steps to fix the chain.
Step #1: Identify the snapshot which is causing the snapshot chain failure.
Look for logs "Failure while loading snapshot chain" in {*}ozone-om.log{*}.
Step #2: Once you find the corruption snapshot info entry, use the tool to fix
it.
Step #3: Use the below command by providing the necessary parameters. By
default, the command runs in dry-run mode. Once you are sure that the changes
look good in dry-run mode, disable the dry-run flag to actually run the command.
{code:java}
ozone repair ldb --db=<path-to-om.db> snapshot <vol-bucket-path>
<snapshot-name> --dry-run=false --gp
<global-previous-snapshot-it-should-point-to> --pp
<path-previous-snapshot-it-should-point-to>
{code}
NOTE: Remember to run the repair tool command as system user which is *hdfs* by
default.
> Tool to fix corrupted snapshot chain
> -------------------------------------
>
> Key: HDDS-9802
> URL: https://issues.apache.org/jira/browse/HDDS-9802
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Hemant Kumar
> Assignee: Hemant Kumar
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.5.0
>
>
> Currently whenever snapshot chain gets corrupted, we don't allow the snapshot
> operations in HDDS-9199. It may also affects KeyDeletingService because it
> depends on snapshot chain.
> This task is to create a tool to fix the snapshot chain if snapshot chain
> gets corrupted. As of not there is no way to fix the chain and resume
> snapshot options.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
