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> 16479 7F0E45D504B0 log INFO START volume=None last_report=2018-09-18T11:19:18 0.00s references=0 0.00/s errors=0 0.00% start_time=2018-09-18T11:19:18 0.00s total_references=0 0.00/s total_errors=0 0.00% 16479 7F0E43CCE7D0 log INFO RUN volume=None last_report=2018-09-18T11:19:18 10.01s references=553 55.27/s errors=0 0.00% start_time=2018-09-18T11:19:18 10.01s total_references=553 55.27/s total_errors=0 0.00% 16479 7F0E45D504B0 log INFO DONE volume=None last_report=2018-09-18T11:19:28 9.68s references=427 44.12/s errors=0 0.00% start_time=2018-09-18T11:19:18 19.68s total_references=980 49.79/s total_errors=0 0.00%
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