Thanks for your patch, it worked well as far as I can see.
Only a minor issue during compilation, EIO was not declared/included.
Dave Kleikamp wrote:
> On Sun, 2005-11-27 at 01:05 +0100, Christoph Beckmeyer wrote:
>
>> I have a volume which was rendered unmountable after a crash.
>> When I run jfs_fsck it seems to run forever, occupying 99 percent of the
>> cpu and under verbose output gives the notice
>> "Cannot read Directory Index page".
>> I'd like to know if fsck is actually doing something useful, or just got
>> stuck, because i see no disk io.
>>
>> I tried to trace the problem down a bit: fsck is doing
>> fscktree.c:350:int xTree_binsrch_page(...) , and executes the while loop.
>> The conditionals inside the loop seem(i have not tested in depth) to
>> bring execution always to line 405. I have added a typescript of
>> jfs_fsck's runtime.
>>
>> I would be thankful for any hints and please let me know if the
>> information I passed is insufficient.
>> What is the probability that my volume can be restored?
>>
>
> Thanks for doing the dirty work and tracking down where it's hanging. I
> believe xTree_search may be called against an empty xtree.
>
> Can you rebuild jfsutils with this patch and try again?
>
> Index: fsck/fsckxtre.c
> ===================================================================
> RCS file: /cvsroot/jfs/jfsutils/fsck/fsckxtre.c,v
> retrieving revision 1.16
> diff -u -p -r1.16 fsckxtre.c
> --- fsck/fsckxtre.c 22 Nov 2005 20:43:54 -0000 1.16
> +++ fsck/fsckxtre.c 29 Nov 2005 19:46:41 -0000
> @@ -361,6 +361,9 @@ int xTree_binsrch_page(xtpage_t * xtpg_p
> highidx = xtpg_ptr->header.nextindex - 1;
> *xad_selected = 0;
>
> + if (lowidx > highidx)
> + return -EIO;
> +
> while ((!(*xad_selected)) && (xbp_rc == FSCK_OK)) {
>
> if ((highidx == lowidx) || ((highidx - lowidx) == 1)) {
>
>
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