{"id":5760,"date":"2025-05-26T18:12:57","date_gmt":"2025-05-26T09:12:57","guid":{"rendered":"https:\/\/mdx.jp\/?post_type=mdx2_news&p=5760"},"modified":"2025-06-02T10:11:44","modified_gmt":"2025-06-02T01:11:44","slug":"mdx%e2%85%b1%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0-%e7%b7%8a%e6%80%a5%e3%83%a1%e3%83%b3%e3%83%86%e3%83%8a%e3%83%b3%e3%82%b9%e3%81%ab%e4%bc%b4%e3%81%86%e3%82%b5%e3%83%bc%e3%83%93%e3%82%b9%e3%81%ae","status":"publish","type":"mdx2_news","link":"https:\/\/mdx.jp\/en\/mdx2\/news\/5760","title":{"rendered":"\uff08Closed\uff09Temporary Suspension of Services Due to Emergency Maintenance of the mdx\u2161 System (May 26 \u2013 June 2)”"},"content":{"rendered":"

[June 2, 2025 (Monday) 10:00 Update]
\nThe issue has been resolved. Thank you for your cooperation.<\/p>\n

\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2014\u2013
\nWe will be conducting emergency maintenance on the mdx\u2161 system according to the schedule below.<\/p>\n

This maintenance is a necessary measure to ensure stable system operation and to prevent potential issues.
\nWe sincerely apologize for the consecutive maintenance work.<\/p>\n

We will provide further information regarding the detailed maintenance plan and future measures at a later time.<\/p>\n

During the maintenance period, all services of the mdx\u2161 system will be temporarily suspended.
\nWe apologize for any inconvenience this may cause and appreciate your understanding and cooperation.<\/p>\n

mdx\u2161 System \u2013 Full Service Suspension Period<\/h3>\n\n\n
mdx\u2161 System<\/th>\nMay 26 (Mon), 2025 18:30 \u2013 June 2 (Mon), 2025 10:00 (JST)<\/td>\n<\/tr>\n<\/table>\n

\u25a0 About Virtual Machine Shutdown<\/h4>\n

*If any virtual machines are running during the maintenance period, they will be shut down by the operations team.
\nIf the shutdown process takes a long time to complete, the machines may be forcibly stopped. Thank you for your understanding.<\/code><\/p>\n

We sincerely apologize for the inconvenience.
\nThank you very much for your understanding and cooperation.<\/p>\n

  
\n————————————————–
\n\u3010May 29, 2025 (Thu) 15:00 Update\u3011<\/p>\n

\u25a0 Details Identified Regarding the Issue<\/h3>\n

It has been confirmed that the issue originates from the virtual server infrastructure “Red Hat OpenStack” and the storage system “Lustre File System” used in mdx\u2161.<\/p>\n

Currently, the root volumes (OS area) of instances running on OpenStack are configured to store data on the Lustre File System via an NFS server.<\/p>\n

Although the root cause is still under investigation, it has been confirmed that volume corruption does not occur in environments where SSD storage is used instead of Lustre.<\/p>\n

Therefore, as a temporary measure, the current maintenance is implementing a change to the SSD storage configuration.
\nThe service is scheduled to resume at 10:00 AM on Monday, June 2, and the issue is expected to be resolved thereafter.<\/p>\n

Since the issue occurred less frequently on Rocky Linux, some users may have avoided using Ubuntu. However, with this change in configuration, Ubuntu can now also be used without problems.
\n* We will provide further information regarding the impact and whether user-side migration is required as soon as it is confirmed.<\/p>\n

\u25a0 Other Storage Services<\/h3>\n

The following storage services are not affected by this issue:<\/p>\n

    \n
  • Object Storage<\/li>\n
  • My Data Portal, Project Data Portal<\/li>\n<\/ul>\n

    We will continue our efforts to provide stable service. Thank you for your understanding and cooperation.<\/p>\n","protected":false},"featured_media":0,"parent":0,"template":"","meta":{"_acf_changed":false,"advanced_seo_description":"","jetpack_seo_html_title":"","jetpack_seo_noindex":false,"jetpack_post_was_ever_published":false},"mdx2_news-cat":[124859],"class_list":["post-5760","mdx2_news","type-mdx2_news","status-publish","hentry","mdx2_news-cat-maintenance","en-US"],"acf":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/mdx2_news\/5760","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/mdx2_news"}],"about":[{"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/types\/mdx2_news"}],"version-history":[{"count":10,"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/mdx2_news\/5760\/revisions"}],"predecessor-version":[{"id":5806,"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/mdx2_news\/5760\/revisions\/5806"}],"wp:attachment":[{"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/media?parent=5760"}],"wp:term":[{"taxonomy":"mdx2_news-cat","embeddable":true,"href":"https:\/\/mdx.jp\/wp-json\/wp\/v2\/mdx2_news-cat?post=5760"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}