Does centos's extundelete restore delete files work?

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use extundelete to restore deleted files, no matter when the files are deleted, they cannot be recovered, as indicated above.

Jan.19,2022
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b30881-2b26b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b30881-2b26b.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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