Rebuild a Volume: Meta2
Preparation
First, run gridinit_cmd restart @meta2; this allows you to check if meta services are up.
If scores are low, the rebuilder can take a long time and can fail due to a timeout.
You can check the score by running openio cluster list meta2.
Launch rebuilding
You can launch the rebuild by using the oio-meta2-rebuilder tool:
# oio-meta2-rebuilder <NAMESPACE> 24531 7F7E2D4FC690 log INFO RUN worker=0 started=2018-07-10T12:27:57 passes=1 errors=0 meta2_references=1 250.44/s waiting_time=0.00 rebuilder_time=0.00 total_time=0.00 (rebuilder: 100.00%) 24531 7F7E2E2A47D0 log INFO DONE started=2018-07-10T12:27:57 ended=2018-07-10T12:28:01 elapsed=3.26 passes=99 errors=0 meta2_references=100 30.66/s waiting_time=1.89 rebuilder_time=1.36 (rebuilder: 100.00%)
Options
If you want to have more information about current rebuilding, you can change the report interval using --report-interval option.
The default value is set to 3600 seconds, but if you want a report every minutes, you must launch rebuilding using oio-meta2-rebuilder --report-interval 60.
If you want more information about current rebuilding, you can change the report interval using the --report-interval option.
The default value is set to 3600 seconds, but if you want a report every minute, you can launch rebuilding using oio-meta2-rebuilder --report-interval 60.
By default, the rebuilding use only one worker, you can give a number of worker using --workers option.
For example, oio-meta2-rebuilder --workers 42 launch rebuilding using 42 workers.
The workers have a limited number of prefix to rebuild per seconds, 30 by default: the goal is to keep the meta performance during the rebuiliding.
You can change this value using --prefixes-per-seconds option. If you want to unlimit the number of prefix to rebuild per seconds,
you can use oio-meta2-rebuilder --prefixes-per-seconds 0.
If you want to rebuild only some containers you can give a file in argument.
The base_name line of openio container show <container> is composed by {id}.{seq}.
You just need to give the id part on the file.
For example if you want to rebuild only this container:
# openio container show container1 +----------------+--------------------------------------------------------------------+ | Field | Value | +----------------+--------------------------------------------------------------------+ | account | my_account | | base_name | 43839DACDD060FA939FAE2714A60640BDC5AFFDDBE8C494BDAB7AA994C3190A5.1 | | bytes_usage | 335B | | container | container1 | | ctime | 1530778169 | | max_versions | Namespace default | | objects | 2 | | quota | Namespace default | | status | Enabled | | storage_policy | Namespace default | +----------------+--------------------------------------------------------------------+
You specify 43839DACDD060FA939FAE2714A60640BDC5AFFDDBE8C494BDAB7AA994C3190A5 as the file and launch rebuilding using:
# oio-meta2-rebuilder <NAMESPACE> --input-file file