ubifs : corruption after power cut test

Matthieu CASTET matthieu.castet at parrot.com
Tue Jul 13 03:27:46 EDT 2010 

Hi,

we found some bug in our driver. Now there no more ubifs error when 
there is uncorrectable ecc error (they should happen in the last 
(interrupted) written page).

But now we got "validate_master: bad master node at offset 69632 error 
7" [1].

The error is not very clear to me.

What does it means ?

What could cause it.


Thanks

Matthieu



[1]
[...]
UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
69632
UBIFS DBG (pid 288): ubifs_scan: look at LEB 1:69632 (57344 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 1:70144 (56832 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
71680
UBIFS DBG (pid 288): ubifs_scan: look at LEB 1:71680 (55296 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: hit empty space 

UBIFS DBG (pid 288): ubifs_end_scan: stop scanning LEB 1 at offset 71680 

UBIFS DBG (pid 288): ubifs_start_scan: scan LEB 2:0 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:0 (126976 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:512 (126464 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
2048
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:2048 (124928 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:2560 (124416 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
4096
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:4096 (122880 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:4608 (122368 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
6144
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:6144 (120832 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:6656 (120320 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
8192
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:8192 (118784 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:8704 (118272 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
10240
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:10240 (116736 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:10752 (116224 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
12288
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:12288 (114688 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:12800 (114176 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
14336
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:14336 (112640 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:14848 (112128 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
16384
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:16384 (110592 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:16896 (110080 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
18432
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:18432 (108544 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:18944 (108032 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
20480
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:20480 (106496 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:20992 (105984 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
22528
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:22528 (104448 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:23040 (103936 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
24576
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:24576 (102400 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:25088 (101888 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
26624
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:26624 (100352 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:27136 (99840 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
28672
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:28672 (98304 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:29184 (97792 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
30720
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:30720 (96256 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:31232 (95744 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
32768
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:32768 (94208 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:33280 (93696 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
34816
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:34816 (92160 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:35328 (91648 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
36864
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:36864 (90112 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:37376 (89600 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
38912
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:38912 (88064 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:39424 (87552 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
40960
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:40960 (86016 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:41472 (85504 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
43008
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:43008 (83968 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:43520 (83456 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
45056
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:45056 (81920 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:45568 (81408 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
47104
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:47104 (79872 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:47616 (79360 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
49152
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:49152 (77824 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:49664 (77312 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
51200
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:51200 (75776 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:51712 (75264 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
53248
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:53248 (73728 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:53760 (73216 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
55296
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:55296 (71680 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:55808 (71168 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
57344
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:57344 (69632 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:57856 (69120 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
59392
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:59392 (67584 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:59904 (67072 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
61440
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:61440 (65536 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:61952 (65024 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
63488
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:63488 (63488 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:64000 (62976 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
65536
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:65536 (61440 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:66048 (60928 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
67584
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:67584 (59392 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:68096 (58880 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
69632
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:69632 (57344 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning master node 

UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:70144 (56832 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: scanning padding node 

UBIFS DBG (pid 288): ubifs_scan_a_node: 1508 bytes padded, offset now 
71680
UBIFS DBG (pid 288): ubifs_scan: look at LEB 2:71680 (55296 bytes left) 

UBIFS DBG (pid 288): ubifs_scan_a_node: hit empty space 

UBIFS DBG (pid 288): ubifs_end_scan: stop scanning LEB 2 at offset 71680 

UBIFS error (pid 288): validate_master: bad master node at offset 69632 
error 7
         magic          0x6101831 

         crc            0xf1cb595d 

         node_type      7 (master node) 

         group_type     0 (no node group) 

         sqnum          53559169 

         len            512 

         highest_inum   50055 

         commit number  208832 

         flags          0x2 

         log_lnum       3 

         root_lnum      42 

         root_offs      78864 

         root_len       68 

         gc_lnum        4294967295 

         ihead_lnum     42 

         ihead_offs     79872 

         index_size     81072 

         lpt_lnum       6 

         lpt_offs       27032 

         nhead_lnum     6 

         nhead_offs     28672 

         ltab_lnum      6 

         ltab_offs      26624 

         lsave_lnum     0 

         lsave_offs     0 

         lscan_lnum     58 

         leb_cnt        122 

         empty_lebs     1 

         idx_lebs       3 

         total_free     327680 

         total_dirty    4500616 

         total_used     9438920 

         total_dead     0 

         total_dark     620816 

UBIFS DBG (pid 292): ubifs_bg_thread: background thread "ubifs_bgt3_0" 
stops

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