Re: XFS Test Case:252 - Shows Wrong Output

[Amit Sahrawat <amit.sahrawat83@xxxxxxxxx>]

Hi,

 

PLATFORM      -- Linux/i686 localhost 2.6.31.5-127.fc12.i686.PAE

 

The output as per the command mentioned by you:

[root@localhost xfstests-2011-05-11]# xfs_io -f -c "truncate 20k" -c "falloc 0 20k" -c "pwrite 0k 8k" -c "fs
ync" -c "pwrite 12k 8k" -c "fsync" -c "fpunch 4k 12k" -c "fiemap -v" /media/c/newfile
wrote 8192/8192 bytes at offset 0
8 KiB, 2 ops; 0.0000 sec (434.028 MiB/sec and 111111.1111 ops/sec)
command "fs
ync" not found
wrote 8192/8192 bytes at offset 12288
8 KiB, 2 ops; 0.0000 sec (977 MiB/sec and 250000.0000 ops/sec)
/media/c/newfile:
 EXT: FILE-OFFSET      BLOCK-RANGE      TOTAL FLAGS
   0: [0..15]:         176..191            16   0x0
   1: [16..23]:        192..199             8 0x800
   2: [24..39]:        200..215            16   0x1

Thanks & Regards,

Amit Sahrawat

 

On Wed, Jun 22, 2011 at 11:06 PM, Allison Henderson <achender@xxxxxxxxxxxxxxxxxx> wrote:

On 06/22/2011 03:48 AM, Amit Sahrawat wrote:

xfs_io -f -c "truncate 20k" -c \
"falloc 0 20k" -c "pwrite 0k 8k" -c "fsync" -c "pwrite 12k 8k" -c  \
"fsync" -c "fpunch 4k 12k" -c "fiemap -v" $testfile | $filter_cmd

*Original Output(Taken from 252.out):
*        13. data ->  unwritten ->  data
0: [0..7]: data
1: [8..31]: hole
2: [32..39]: data
*Output in my case*
  13. data ->  unwritten ->  data
0: [0..15]: data
1: [16..23]: unwritten
2: [24..39]: data

Please let me know about the vailidity of this result.

Hi there,

It looks like the "fpunch 4k 12k" is supposed to be what puts the hole there.  If I run the command you have above, the fiemap should show a hole like this:

xfs_io -f -c "truncate 20k" -c "falloc 0 20k" -c "pwrite 0k 8k" -c "fsync" -c "pwrite 12k 8k" -c  "fsync" -c "fpunch 4k 12k" -c "fiemap -v" somefile
wrote 8192/8192 bytes at offset 0
8 KiB, 2 ops; 0.0000 sec (217.014 MiB/sec and 55555.5556 ops/sec)
wrote 8192/8192 bytes at offset 12288

8 KiB, 2 ops; 0.0000 sec (339.674 MiB/sec and 86956.5217 ops/sec)

somefile:
 EXT: FILE-OFFSET      BLOCK-RANGE      TOTAL FLAGS

  0: [0..7]:          256..263             8   0x0

  1: [8..31]:         hole                24

  2: [32..39]:        288..295             8   0x1

If you do not see the hole, it could be your punch hole operation is failing for some reason.

Allison Henderson