导出数据库的时候，出现提示

ysqldump: Couldn't execute 'SELECT DISTINCT TABLESPACE_NAME, FILE_NAME, LOGFILE_GROUP_NAME, EXTENT_SIZE, INITIAL_SIZE, ENGINE FROM INFORMATION_SCHEMA.FILES WHERE FILE_TYPE = 'DATAFILE' AND TABLESPACE_NAME IN (SELECT DISTINCT TABLESPACE_NAME FROM INFORMATION_SCHEMA.PARTITIONS WHERE TABLE_SCHEMA IN ('t8')) ORDER BY TABLESPACE_NAME, LOGFILE_GROUP_NAME': Incorrect key file for table '/tmp/#sql_219f_1.MYI'; try to repair it (126)

看提示好像是 /tmp 这里出了问题， 不知道该怎么修复这个