projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
| 2 | // vim: ts=8 sw=2 smarttab | |
| 3 | /* | |
| 4 | * Ceph - scalable distributed file system | |
| 5 | * | |
| 6 | * Copyright (C) 2010 Greg Farnum <gregf@hq.newdream.net> | |
| 7 | * | |
| 8 | * This is free software; you can redistribute it and/or | |
| 9 | * modify it under the terms of the GNU Lesser General Public | |
| 10 | * License version 2.1, as published by the Free Software | |
| 11 | * Foundation. See file COPYING. | |
| 12 | */ | |
| 13 | ||
| 14 | #ifndef JOURNAL_RESETTER_H_ | |
| 15 | #define JOURNAL_RESETTER_H_ | |
| 16 | ||
| 17 | ||
| 18 | #include "MDSUtility.h" | |
| 19 | ||
| 20 | class Journaler; | |
| 21 | ||
| 22 | /** | |
| 23 | * This class lets you reset an mds journal for troubleshooting or whatever. | |
| 24 | * | |
| 25 | * To use, create a Resetter, call init(), and then call reset() with the name | |
| 26 | * of the file to dump to. | |
| 27 | */ | |
| 28 | class Resetter : public MDSUtility { | |
| 11fdf7f2 TL |
29 | private: |
| 30 | mds_role_t role; | |
| 31 | inodeno_t ino; | |
| 32 | bool is_mdlog; | |
| 33 | ||
| 7c673cae FG |
34 | protected: |
| 35 | int _write_reset_event(Journaler *journaler); | |
| 36 | ||
| 37 | public: | |
| 38 | Resetter() {} | |
| 11fdf7f2 | 39 | ~Resetter() {} |
| 7c673cae | 40 | |
| 11fdf7f2 | 41 | int init(mds_role_t role_, const std::string &type, bool hard); |
| 7c673cae FG |
42 | /** |
| 43 | * For use when no journal header/pointer was present: write one | |
| 44 | * out from scratch. | |
| 45 | */ | |
| 11fdf7f2 TL |
46 | int reset_hard(); |
| 47 | int reset(); | |
| 7c673cae FG |
48 | }; |
| 49 | ||
| 50 | #endif /* JOURNAL_RESETTER_H_ */ |