UBIFS failure & stable page writes
Adrian Hunter
adrian.hunter at intel.com
Wed Jun 12 03:58:21 EDT 2013
This shows that the orphan area has recorded the orphaning of inode 0 (non-existent!) and inode 1 (root inode!!!).
A sticking plaster solution is to prevent orphans-processing from deleting the root inode e.g.
diff --git a/fs/ubifs/orphan.c b/fs/ubifs/orphan.c
index ba32da3..9400b5b 100644
--- a/fs/ubifs/orphan.c
+++ b/fs/ubifs/orphan.c
@@ -613,6 +613,11 @@ static int do_kill_orphans(struct ubifs_info *c, struct ubifs_scan_leb *sleb,
n = (le32_to_cpu(orph->ch.len) - UBIFS_ORPH_NODE_SZ) >> 3;
for (i = 0; i < n; i++) {
inum = le64_to_cpu(orph->inos[i]);
+ if (inum < UBIFS_FIRST_INO) {
+ ubifs_err("*not* deleting orphaned inode %lu",
+ (unsigned long)inum);
+ continue;
+ }
dbg_rcvry("deleting orphaned inode %lu",
(unsigned long)inum);
err = ubifs_tnc_remove_ino(c, inum);
On 11/06/13 15:16, Prins Anton (ST-CO/ENG1.1) wrote:
> Hi Artem,
>
> We got logging inside the recovery procedure to print the 'orphan LEB' information.
> I wonder if the LEB9 moves yes/no? So is it safe to use 'dd' with an offset of 9*LEB?
> (Difficulty is we have no file system, so this was the first option...)
>
> You see flood of message's; but I suppose the first part is the information required!
> If not I have to make some solution to go for 'dd'.
>
> Thanks in advance,
>
> Anton
>
>
>
> leb9dump-filtered.log
>
>
> UBIFS: parse sync
> UBIFS: recovery needed
> ubi_leb_read datafs 9
> 00000000: 31 18 10 06 1a c9 4a be 09 ca 5d 00 00 00 00 00 28 00 00 00 0b 00 00 00 60 05 00 00 00 00 00 80 1.....J...].....(.......`.......
> 00000020: ea 88 0c 00 00 00 00 00 31 18 10 06 74 7c 20 ed 00 00 00 00 00 00 00 00 1c 00 00 00 05 00 00 00 ........1...t| .................
> 00000040: bc 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
> 00000060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
struct ubifs_ch {
__le32 magic; 06101831 06101831
__le32 crc; be4ac91a ed207c74
__le64 sqnum; 5dca09 0
__le32 len; 28 1c
__u8 node_type; b=orph 5=pad
__u8 group_type; 0 0
__u8 padding[2]; 0 0
} __packed;
struct ubifs_orph_node {
struct ubifs_ch ch;
__le64 cmt_no; 60 05 00 00 00 00 00 80
__le64 inos[]; 0c88ea
} __packed;
struct ubifs_pad_node {
struct ubifs_ch ch;
__le32 pad_len; 0fbc
} __packed;
<snip>
> 00001000: 31 18 10 06 33 f1 d9 f4 0c 80 6e 00 00 00 00 00 28 00 00 00 0b 00 00 00 73 05 00 00 00 00 00 80 1...3.....n.....(.......s.......
> 00001020: 9f ea 0e 00 00 00 00 00 31 18 10 06 74 7c 20 ed 00 00 00 00 00 00 00 00 1c 00 00 00 05 00 00 00 ........1...t| .................
> 00001040: bc 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
> 00001060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
__le32 len; 28
__le64 cmt_no; 73 05 00 00 00 00 00 80
__le64 inos[]; 0eea9f
<snip>
> 00002000: 31 18 10 06 c0 79 a0 c5 35 65 6f 00 00 00 00 00 28 00 00 00 0b 00 00 00 74 05 00 00 00 00 00 80 1....y..5eo.....(.......t.......
> 00002020: 4c 0b 0f 00 00 00 00 00 31 18 10 06 74 7c 20 ed 00 00 00 00 00 00 00 00 1c 00 00 00 05 00 00 00 L.......1...t| .................
> 00002040: bc 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
> 00002060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
__le32 len; 28
__le64 cmt_no; 74 05 00 00 00 00 00 80
__le64 inos[]; 0f0b4c
<snip>
> 00003000: 31 18 10 06 f8 40 ed 34 89 2f 71 00 00 00 00 00 28 00 00 00 0b 00 00 00 76 05 00 00 00 00 00 80 1.... at .4./q.....(.......v.......
> 00003020: 00 00 00 00 00 00 00 00 31 18 10 06 74 7c 20 ed 00 00 00 00 00 00 00 00 1c 00 00 00 05 00 00 00 ........1...t| .................
> 00003040: bc 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
> 00003060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
__le32 len; 28
__le64 cmt_no; 76 05 00 00 00 00 00 80
__le64 inos[]; 0 <----- !!!!!
<snip>
> 00004000: 31 18 10 06 43 37 1d 7e 00 73 77 00 00 00 00 00 28 00 00 00 0b 00 00 00 7d 05 00 00 00 00 00 80 1...C7.~.sw.....(.......}.......
> 00004020: 01 00 00 00 00 00 00 00 31 18 10 06 74 7c 20 ed 00 00 00 00 00 00 00 00 1c 00 00 00 05 00 00 00 ........1...t| .................
> 00004040: bc 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
> 00004060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
__le32 len; 28
__le64 cmt_no; 7d 05 00 00 00 00 00 80
__le64 inos[]; 1 <----- !!!!!
<snip>
> 00005000: 31 18 10 06 86 67 56 c0 53 c8 7d 00 00 00 00 00 28 00 00 00 0b 00 00 00 84 05 00 00 00 00 00 80 1....gV.S.}.....(...............
> 00005020: 8a 18 11 00 00 00 00 00 31 18 10 06 74 7c 20 ed 00 00 00 00 00 00 00 00 1c 00 00 00 05 00 00 00 ........1...t| .................
> 00005040: bc 0f 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
> 00005060: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................................
__le32 len; 28
__le64 cmt_no; 84 05 00 00 00 00 00 80
__le64 inos[]; 11188a
<snip>
> 00006000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ................................
<snip>
> UBIFS: recovery completed
> UBIFS: mounted UBI device 1, volume 1, name "datafs"
> UBIFS: file system size: 640475136 bytes (625464 KiB, 610 MiB, 1241 LEBs)
> UBIFS: journal size: 10452992 bytes (10208 KiB, 9 MiB, 21 LEBs)
> UBIFS: media format: w4/r0 (latest is w4/r0)
> UBIFS: default compressor: lzo
> UBIFS: reserved for root: 0 bytes (0 KiB)
> UBIFS error (pid 1): ubifs_iget: failed to read inode 1, error -2
> ubifs_fill_super couldn't read UBIFS_ROOT_INO
>
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