Hi again, Christoph. How you prefer to pre allocate space? xfs I/O or by 'dd' to do it? What other information you would like to better understand and manage to solve this problem? Below sending the first lines of the output 'filefrag -v cachefile' to check if there is some useful information ... if you want, I can make available for download a file with the output of the 'filefrag-v' #### Filesystem type is: 58465342 File size of cachefile is 885075181568 (216082808 blocks, blocksize 4096) ext logical physical expected length flags 0 0 37651 1 1 8 8356011 37651 2 2 10 42985973 8356012 5 3 16 8356008 42985977 1 4 24 14384348 8356008 3 5 27 42978781 14384350 4 6 31 49416416 42978784 1 7 32 14384398 49416416 3 8 35 42985981 14384400 3 9 40 14384407 42985983 2 10 42 42990181 14384408 4 11 48 14384433 42990184 3 12 56 14384445 14384435 2 13 64 14384470 14384446 2 14 66 43029387 14384471 2 15 72 14384492 43029388 2 16 80 14384556 14384493 2 17 82 43108186 14384557 2 18 88 14388688 43108187 3 19 96 14391631 14388690 3 20 104 14391634 1 21 112 14391635 1 22 113 41118314 14391635 1 23 120 14391625 41118314 1 24 121 43107765 14391625 5 25 128 14391888 43107769 7 26 136 14391793 14391894 6 27 142 14391806 14391798 1 28 144 14391802 14391806 4 29 152 14391810 14391805 4 30 160 14391818 14391813 3 31 168 14391826 14391820 4 32 176 14391830 1 33 184 30960375 14391830 13 34 200 30960391 30960387 2 35 202 43111672 30960392 5 36 208 30960399 43111676 2 37 210 42949345 30960400 3 38 216 30960407 42949347 3 39 224 30960415 30960409 3 40 232 30960423 30960417 3 41 240 30960431 30960425 3 42 248 30960439 30960433 6 43 256 30960447 30960444 3 44 264 30960455 30960449 2 45 266 41079292 30960456 1 46 272 30960463 41079292 3 47 275 40779450 30960465 1 #### Another fact, tried to run a 'xfs_bmap' file on my 1TB (not sure if the output of this command would be relevant to you) and got the following message: # xfs_bmap -pv cachefile xfs_bmap: xfsctl(XFS_IOC_GETBMAPX) iflags=0x4 ["file"]: Unable to allocate memory Thanks. Kelbel Junior _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
