Re: BUG with inode allocating

[Nickolay <nickolay@xxxxxxxxx>]

Mike Montour wrote:

> Nickolay wrote:
>  
>
> > root@192_168_15_15:/usr/protei$ xfs_db -r -c freesp /dev/cciss/c0d0p2
> > can't seek in filesystem at bb 134217728
> > can't read btree block 0/16777216
> > can't seek in filesystem at bb 1744830464
> >    
> I don't know what that's all about (although Google suggests it may be a
> bug in old versions of the xfs_db command -
> http://oss.sgi.com/archives/xfs/2003-02/msg00077.html ).
>  
>
> > [...]
> >  from      to extents  blocks    pct
> >     1       1      32      32 100.00
> >    
> This says that all of your free space is in single blocks, which would
> explain why XFS can't allocate a new chunk of inodes. However the total
> amount of free space here is much less than your previous 'df' showed
> (and there were the other errors above) so this may not be accurate.
>
> If you can temporarily move some large old files (ones written before
> the filesystem became fragmented) off this partition you might free up
> some larger extents. 'xfs_fsr' might also help if you are able to free
> up enough temporary space for it to work, however I do not have any
> direct experience using this tool.
>
>  
Yeah, this is really xfs_db utility bug.
New version works fine, but with a warning(can't get sector size),
new mkfs.xfs warns too.

This is a new result:

--------------------------------------------
root@192_168_15_15:/usr/test$ xfs_db -r -c "freesp -s" /dev/cciss/c0d0p2
xfs_db: warning - cannot get sector size from block device 
/dev/cciss/c0d0p2: Invalid request code
  from      to extents  blocks    pct
     1       1    4097    4097  24.27
     2       3    5694   12771  75.66
     4       7       3      12   0.07
total free extents 9794
total free blocks 16880
average free extent size 1.7235
--------------------------------------------

And /bin/df show to us:
root@192_168_15_15:/usr/test$ /bin/df /dev/cciss/c0d0p2
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/cciss/c0d0p2      1953600   1886020     67580  97% /usr/test

Now, if we multiple total free block(from all extents), we get almost 
precisely
the same freespace, which show to us /bin/df:
16880 * 4096 / 1024 = 67520 Kb

Now, as I understand, the problem here because XFS can't finds free extent,
for allocating new chunk of inodes, and there is no way to tune the 
chunk size?

--
Nickolay Vinogradov
Protei Reseach and Development Center
St.Petersburg, 194044, Russia
Tel.: +7 812 449 47 27