[Bug 29162] Reiserfs hang with dataloss sometimes

[bugzilla-daemon@bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=29162





--- Comment #45 from Ra√∫l <rasasi78@gmail.com>  2013-05-11 15:03:36 ---
Hi:

I've run into a series of locks of this kind. I can't add much more to what
I've already reported. I haven't found a method of reliably reproduce this
lock, my impression so far is that this one is related to:
a) wake up from suspend to ram (maybe also to disk) and 
b) certain /corruption/ layout in disk

Latest locks happened after I resume from ram. Disk was not much loaded at the
lock moment, there was a high user activity though: like running and closing
apps, email and an important amount of download threads in the background. I
had the lock there.

As usual, the cleanest way to get out of this was alt-sysrq-E that terms all
processes. Then three finger salute.

On a fresh boot, I tried the same usage pattern, soon after I had the lock
again. In this case STR or STD (Suspend to Disk) weren't involved.

I decided to go into a reiserfsck --rebuild-tree in my home partition. This is
a log excerpt:
"""
Replaying journal: Done.
Reiserfs journal '/dev/mapper/portaka-home' in blocks [18..8211]: 0
transactions replayed
###########
reiserfsck --rebuild-tree started at Fri May 10 11:04:30 2013
###########

Pass 0:
####### Pass 0 #######
Loading on-disk bitmap .. ok, 43532529 blocks marked used
Skipping 9574 blocks (super block, journal, bitmaps) 43522955 blocks will be
read
0%...block 6328224: The number of items (34381) is incorrect, should be (1) -
corrected
block 6328224: The free space (15751) is incorrect, should be (2256) -
corrected
pass0: vpf-10110: block 6328224, item (0): Unknown item type found [2130706432
1023807744 0x3d970000 ??? (13)] - deleted
block 6343857: The number of items (34381) is incorrect, should be (1) -
corrected
block 6343857: The free space (15751) is incorrect, should be (2256) -
corrected
pass0: vpf-10110: block 6343857, item (0): Unknown item type found [2130706432
1023807744 0x3d970000 ??? (13)] - deleted
.20%...block 15040910: The number of items (34826) is incorrect, should be (1)
- corrected
block 15040910: The free space (2) is incorrect, should be (4048) - corrected
pass0: vpf-10110: block 15040910, item (0): Unknown item type found [3506543104
3523215796 0xa3000784 ??? (15)] - deleted
.block 16215906: The number of items (287) is incorrect, should be (1) -
corrected
block 16215906: The free space (0) is incorrect, should be (4048) - corrected
pass0: vpf-10200: block 16215906, item 0: The item [218104576 203714 0x790e01
IND (1)] with wrong offset is deleted
block 17156098: The number of items (12648) is incorrect, should be (1) -
corrected
block 17156098: The free space (0) is incorrect, should be (4048) - corrected
40%block 18917377: The number of items (6) is incorrect, should be (0) -
corrected
block 18917377: The free space (15481) is incorrect, should be (4072) -
corrected
block 19611181: The number of items (6) is incorrect, should be (0) - corrected
block 19611181: The free space (15481) is incorrect, should be (4072) -
corrected
.block 20333852: The number of items (15) is incorrect, should be (1) -
corrected
block 20333852: The free space (0) is incorrect, should be (3792) - corrected
pass0: vpf-10210: block 20333852, item 0: The item with wrong offset or length
found [4608 16778752 0x63030000 DRCT (2)], len 256 - deleted
..block 25257511: The number of items (287) is incorrect, should be (1) -
corrected
block 25257511: The free space (29793) is incorrect, should be (4048) -
corrected
pass0: vpf-10200: block 25257511, item 0: The item [218103998 65810 0x6e0e01
IND (1)] with wrong offset is deleted
.60%block 28012850: The number of items (41488) is incorrect, should be (1) -
corrected
block 28012850: The free space (24) is incorrect, should be (4048) - corrected
pass0: vpf-10110: block 28012850, item (0): Unknown item type found [38049792
1032720128 0x10010002 ??? (15)] - deleted
.block 30356195: The number of items (282) is incorrect, should be (1) -
corrected
block 30356195: The free space (0) is incorrect, should be (2256) - corrected
pass0: vpf-10110: block 30356195, item (0): Unknown item type found [205917185
285212679 0x1 ??? (15)] - deleted
.block 30911284: The number of items (12648) is incorrect, should be (1) -
corrected
block 30911284: The free space (0) is incorrect, should be (4048) - corrected
block 31013511: The number of items (6) is incorrect, should be (0) - corrected
block 31013511: The free space (1472) is incorrect, should be (4072) -
corrected
block 31038991: The number of items (6) is incorrect, should be (0) - corrected
block 31038991: The free space (1472) is incorrect, should be (4072) -
corrected
.block 33620308: The number of items (15) is incorrect, should be (1) -
corrected
block 33620308: The free space (0) is incorrect, should be (3792) - corrected
pass0: vpf-10210: block 33620308, item 0: The item with wrong offset or length
found [4608 16778752 0x63030000 DRCT (2)], len 256 - deleted
.block 34356027: The number of items (282) is incorrect, should be (1) -
corrected
block 34356027: The free space (0) is incorrect, should be (2256) - corrected
pass0: vpf-10110: block 34356027, item (0): Unknown item type found [205917185
285212679 0x1 ??? (15)] - deleted
block 34621658: The number of items (4352) is incorrect, should be (1) -
corrected
block 34621658: The free space (39937) is incorrect, should be (207) -
corrected
pass0: vpf-10110: block 34621658, item (0): Unknown item type found [218169345
114 0x1180001 ??? (15)] - deleted
"""

I wonder if those "Unknown item type found" or several of those poiting to same
block, e.g.: 205917185 mean anything or could trigger the unexpected lock.

HTH,

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