Gehel added a subscriber: Volans. Gehel added a comment.
After discussion with @Volans: We see no errors at hardware level. Badblocks does find a bad block, but going through mdraid creates enough levels of indirections that this might not be hardware related. Filesystem is corrupted. At this point, we can try blaming the error on cosmic rays, reimage to get into a sane configuration and hope it does not happen again. There is no certainty that this will resolve the issue for good, but it seems a good compromise, not spending too much time investigating further at the moment. Next step: reimage and copy data from another server (note that wdqs2008 is running an initial import at the moment). TASK DETAIL https://phabricator.wikimedia.org/T274788 EMAIL PREFERENCES https://phabricator.wikimedia.org/settings/panel/emailpreferences/ To: Gehel Cc: Volans, Gehel, Aklapper, MPhamWMF, CBogen, Akuckartz, Nandana, Namenlos314, Lahi, Gq86, Lucas_Werkmeister_WMDE, GoranSMilovanovic, QZanden, EBjune, merbst, LawExplorer, _jensen, rosalieper, Scott_WUaS, Jonas, Xmlizer, jkroll, Wikidata-bugs, Jdouglas, aude, Tobias1984, Manybubbles, Mbch331
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