-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 01/11/2011 02:42 PM, sh@keff.org wrote:
> Hmm. I don't think this is the same error I got the first time. Then it
> was something like '("pass_2: Reading of the block (%lu) failed on the
> device 0x%x\n"' (pass2.c).
> 
> Then I didn't run the fsck with -S.

Can you try to reproduce with the attached patch? Most of it are
formatting changes so the negative blocks (printed) will go away but
there are two signedness fixes in there that should help.

- -Jeff

> 
> On 01/11/11 20:30, Jeff Mahoney wrote:
>> On 01/11/2011 02:27 PM, sh@keff.org wrote:
>>> Hi
>>
>>> On 01/09/11 22:40, Jeff Mahoney wrote:
>>>> On 01/08/2011 07:58 PM, Edward Shishkin wrote:
>>>>> On 01/08/2011 02:31 PM, Sebastian Hyrwall wrote:
>>>>>> Hi
>>>>
>>>>> Hello.
>>>>
>>>>>>
>>>>>> I am getting a negative block-number with reiserfsck when doing
>>>>>> --rebuild-tree -S (or without -S). This causes a segmentation fault
>>>>>> later (pass 2) in the check because it tries to read a "non-existant
>>>>>> block". My rebuild takes 3 days and i didn't copy the stdout-info the
>>>>>> first time so I will post some more info as soon as it becomes available.
>>>>>>
>>>>>> Pass 0:
>>>>>> ####### Pass 0 #######
>>>>>> The whole partition (-710934672 blocks) is to be scanned
>>>>>> Skipping 117586 blocks (super block, journal, bitmaps)
>>>>
>>>>
>>>>> So you do have a ~16T partition. Correct?
>>>>
>>>>
>>>>>  -711052258 blocks
>>>>
>>>> This bit isn't bad typing - it's bad printf formatting. The actual bad
>>>> typing is going to be harder to track down. A quick look showed me some
>>>> signed block count variables in the debugreiserfs code but the fsck code
>>>> may be better off. I'll dig into it.
>>>>
>>>> Since you're trying to reproduce, it would be great if you capture the
>>>> core dump that should happen when you seg fault. Exact output would be
>>>> useful as well.
>>>>
>>>> -Jeff
>>>>
>>> Pass 1 (will try to insert 3472246 leaves):
>>> ####### Pass 1 #######
>>> Looking for allocable blocks .. finished
>>> 0%....20%^[[A....40%....60%..bc ..80%....100%
>>> left 0, 62 /sec
>>> Flushing..finished
>>>         3472246 leaves read
>>>                 3457984 inserted
>>>                         - pointers in indirect items pointing to
>>> metadata 77 (zeroed)
>>>                 14262 not inserted
>>>         non-unique pointers in indirect items (zeroed) 71213
>>> ####### Pass 2 #######
>>
>>> Pass 2:
>>> 0%bread: Cannot read the block (18446744072169358012): (Invalid
>>> argument). /sec
>>> bread: Cannot read the block (18446744072169358012): (Invalid argument).
>>
>>> gdb
>>
>>> Program received signal SIGSEGV, Segmentation fault.
>>> 0x000000000042008b in ?? ()
>>
>>> ---
>>> 18446744072169358012 is pretty close to an unsigned int64.
>>
>> This looks like a signed int got sign extended to a long.
>>
>>> The coredmp is 1.7GB so I will upload that somewhere soon.. :)
>>
>> I don't need the whole core dump for now. Can you load up gdb and do:
>>
>> gdb reiserfsck core
>>
>> (gdb) bt -full
>>
>> .. and send the results?
>>
>> Thanks.
>>
>> -Jeff
>>
>>
>>
>>
>>>>
>>>>>> will be read
>>>>>>
>>>>>> Does anyone have any idea on how to fix this?
>>>>>>
>>>>>> On a 64-bit system.
>>>>
>>>>
>>>>> It looks like you have encountered an overflow/truncation fsck bug
>>>>> specific to giant volumes.
>>>>
>>>>> I would first ask Jeff: AFAIK he is planning to enable 16T files
>>>>> in reiserfs.
>>>>> Jeff, do you have any non-published fixups for such problems?
>>>>
>>>>> Thanks,
>>>>> Edward.
>>>>
>>>>
>>>>>>
>>>>>> Sincerely,
>>>>>> Sebastian H
>>>>>> -- 
>>>>>> To unsubscribe from this list: send the line "unsubscribe
>>>>>> reiserfs-devel" in
>>>>>> the body of a message to majordomo@vger.kernel.org
>>>>>> More majordomo info at http://vger.kernel.org/majordomo-info.html
>>>>
>>>>
>>>>
>>
>>
> --
> To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> 
> --
> To unsubscribe from this list: send the line "unsubscribe reiserfs-devel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html


- -- 
Jeff Mahoney
SUSE Labs
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.16 (GNU/Linux)
Comment: Using GnuPG with SUSE - http://enigmail.mozdev.org/

iEYEARECAAYFAk0sxfkACgkQLPWxlyuTD7KlMACfUschi1wXFAGZUXiXSJuF5Z1h
FSMAn1/saYInkC4LdZvZqM74zsqV+1s0
=OM5X
-----END PGP SIGNATURE-----