I have my home directory mounted as a nilfs2 partition. Today what happened was that first I noticed google-chrome reporting it cannot load user profile, I initially thought it was a google-chrome error. At the time I was still able to view and modify my home directory. But then after rebooting the system, my home partition no longer mounts. I'm using nilfs-2.0.19 and nilfs-utils-2.0.18 with Linux kernel 2.6.28.
Here is the error message from dmesg (after turning on debugging message for nilfs2): NILFS nilfs_fill_super: start(silent=0) NILFS(recovery) nilfs_search_super_root: looking segment (seg_start=1607680, seg_end=1609727, segnum=785, seg_seq=307637) NILFS(recovery) load_segment_summary: checking segment (pseg_start=1608334, full_check=0) NILFS(recovery) load_segment_summary: done (ret=3) NILFS(recovery) nilfs_search_super_root: strayed: scan_newer=0, ret=3 NILFS warning: Segment magic number invalid NILFS: error searching super root. NILFS nilfs_fill_super: aborted NILFS put_nilfs: the_nilfs on bdev mmcblk0p1 was freed I then dumped the first and last (backup) copy of the nilfs2 super block, they are identical, and given below: 00000400 02 00 00 00 00 00 34 34 00 01 00 00 A1 6A E9 71 ......44.....j.q 00000410 A3 F1 DD BE 02 00 00 00 AF 07 00 00 00 00 00 00 ................ 00000420 00 E0 BF D7 03 00 00 00 01 00 00 00 00 00 00 00 ................ 00000430 00 08 00 00 05 00 00 00 7C 3D 0A 00 00 00 00 00 ........|=...... 00000440 8E 8A 18 00 00 00 00 00 B5 B1 04 00 00 00 00 00 ................ 00000450 00 B8 23 00 00 00 00 00 B9 AF F3 4A 00 00 00 00 ..#........J.... 00000460 D9 E1 D6 4B 00 00 00 00 49 8F ED 4B 00 00 00 00 ...K....I..K.... 00000470 37 00 32 00 03 00 01 00 B9 AF F3 4A 00 00 00 00 7.2........J....elp 00000480 00 4E ED 00 00 00 00 00 00 00 00 00 0B 00 00 00 .N.............. 00000490 80 00 20 00 C0 00 10 00 13 1C FC 11 D7 43 4C 09 .. ..........CL. 000004A0 81 64 93 0A F4 54 CF 5E 48 4F 4D 45 00 00 00 00 .d...T.^HOME.... I wonder if there is a fsck tool to help me recover the file system. Any help is greatly appreciated! PS: last time I had a different problem of losing partition info, and later successfully recovered with the help from people on the list. So thanks! Now I'm actually backing up my files every two weeks, but it'll still be great if it can recover and even better if we can trace the problem. -- Regards, Paul Liu Yale Haskell Group http://www.haskell.org/yale -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
