tikv无法启动，日志报错"failed to create kv engine: Storage Engine Corruption: Can't access /25610279.sst: IO error"

找出region和sst文件对应关系。然后参考下面官方命令：
tikv-ctl ldb --db=data/tikv-21107/db unsafe_remove_sst_file “data/tikv-21107/db/000014.sst”
tikv-ctl --db=data/tikv-21107/db tombstone -r 4 --pd