Re: [LTP] [PATCH] Add new testcases for ext4 new features - V3

[Subrata Modak <subrata@linux.vnet.ibm.com>]

Miao,

Now that a new release has gone, can you please look in to whether the
things execute as you expected ?

Regards--
Subrata

On Fri, 2009-10-30 at 00:01 +0530, Subrata Modak wrote: 
> Miao,
> 
> On Tue, 2009-10-27 at 19:05 +0530, Subrata Modak wrote: 
> > Hi Andreas,
> > 
> > Thanks for taking a look and clarifying the issues.
> > 
> > On Mon, 2009-10-26 at 16:15 -0600, Andreas Dilger wrote:
> > > On 2009-10-26, at 07:26, Subrata Modak wrote:
> > > > We had recently added EXT4 testcases to LTP. As the author of these
> > > > tests mentioned, we saw 2 such failures in subdirectory limit test:
> > > >
> > > > Ext4 subdir limit test
> > > > ext4-subdir-limit    0  TINFO  :  Num of dirs to create: 65537, Dir  
> > > > name
> > > > len: short name                        Parent dir: mnt_point, Block
> > > > size: 1024
> > > > mke2fs 1.41.9 (22-Aug-2009)
> > > > tune2fs 1.41.9 (22-Aug-2009)
> > > > Setting test filesystem flag
> > > > /dev/VG1_EXT4/LV1_EXT4: The test_fs flag is set (and ext4 is  
> > > > available).
> > > > CLEARED.
> > > 
> > > You don't need to set the test_fs flag for modern ext4.
> > 
> > Miao,
> > 
> > Can we change this ?
> > 
> > > 
> > > > /dev/VG1_EXT4/LV1_EXT4: clean, 10/8847360 files, 2297019/141557760
> > > > blocks
> > > > dumpe2fs 1.41.9 (22-Aug-2009)
> > > > ext4-subdir-limit    1  TPASS  :  ext4 subdir limit test pass
> > > > ext4-subdir-limit    0  TINFO  :  Num of dirs to create: 65537, Dir  
> > > > name
> > > > len: long name                         Parent dir: mnt_point, Block
> > > > size: 1024
> > > > mkdir: No space left on device
> > > > ext4-subdir-limit    2  TFAIL  :  failed to create directories - 19524
> > > > ext4-subdir-limit    0  TINFO  :  Num of dirs to create: 65537, Dir  
> > > > name
> > > > len: short name                        Parent dir: mnt_point/sub,  
> > > > Block
> > > > size: 1024
> > > > mke2fs 1.41.9 (22-Aug-2009)
> > > > tune2fs 1.41.9 (22-Aug-2009)
> > > > Setting test filesystem flag
> > > > /dev/VG1_EXT4/LV1_EXT4: The test_fs flag is set (and ext4 is  
> > > > available).
> > > > CLEARED.
> > > > /dev/VG1_EXT4/LV1_EXT4: clean, 12/8847360 files, 2297037/141557760
> > > > blocks
> > > > dumpe2fs 1.41.9 (22-Aug-2009)
> > > > ext4-subdir-limit    3  TPASS  :  ext4 subdir limit test pass
> > > > ext4-subdir-limit    0  TINFO  :  Num of dirs to create: 65537, Dir  
> > > > name
> > > > len: long name                         Parent dir: mnt_point/sub,  
> > > > Block
> > > > size: 1024
> > > > mkdir: No space left on device
> > > > ext4-subdir-limit    4  TFAIL  :  failed to create directories - 19483
> > > > ext4-subdir-limit    0  TINFO  :  Num of dirs to create: 65537, Dir  
> > > > name
> > > > len: short name                        Parent dir: mnt_point, Block
> > > > size: 2048
> > > >
> > > > Is this a known issue for EXT4 ?
> > > 
> > > Creating many long filenames (255 bytes) in a 1kB block filesystem is a
> > > known issue that is not expected to be fixed (at least I'm not aware of
> > > any work being done in this area).  A vast majority of filesystems
> > > today are formatted with 4kB blocks (due to disk size) and the  
> > > overhead of
> > > managing 1kB block filesystems makes these only marginally used, and it
> > > is also very rare to have applications with such large filenames.
> > 
> > Ok.
> > 
> > > 
> > > > We also uncovered that the tests gives a decent 50% lines and over 61%
> > > > function coverage for EXT4 code. Please find the individual coverage
> > > > under EXT4 attached.
> > > 
> > > Interesting to see this.
> > 
> > And the good news continues. I did a complete run of the tests this
> > time. Unlike last time where it was running for more than 48 hours owing
> > to huge FS size(680GB), i ran it on a small 135GB partition this time.
> > It took around 40 hours completing the entire run which also include the
> > online-defrag tests. Guess, the new Code Coverage results are:
> > 
> > Lines:		56.1%,
> > Functions:	66.4%,
> > 
> > However, it is also accompanied by the following failures in the online-defrag part:
> > ========================================================================================
> > ext4-online-defrag    0  TINFO  :  defrag type: 1, defrag obj: 3, block size: 1024
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > 69630819+0 records in
> > 69630819+0 records out
> > 71301958656 bytes (71 GB) copied, 2694.12 s, 26.5 MB/s
> > ext4-online-defrag    3  TFAIL  :  e4defrag returned failure
> > ext4-online-defrag    0  TINFO  :  defrag type: 2, defrag obj: 1, block size: 1024
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > ...
> > ext4-online-defrag    0  TINFO  :  defrag type: 2, defrag obj: 3, block size: 1024
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > 69630819+0 records in
> > 69630819+0 records out
> > 71301958656 bytes (71 GB) copied, 2623.31 s, 27.2 MB/s
> > ext4-online-defrag    6  TFAIL  :  e4defrag returned failure
> > ext4-online-defrag    0  TINFO  :  defrag type: 3, defrag obj: 1, block size: 1024
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > File is not regular file
> >  "/dev/VG1_EXT4/LV1_EXT4"
> > ext4-online-defrag    7  TFAIL  :  e4defrag returned failure
> > ext4-online-defrag    0  TINFO  :  defrag type: 3, defrag obj: 2, block size: 1024
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > 40+0 records in
> > 40+0 records out
> > 41943040 bytes (42 MB) copied, 0.737014 s, 56.9 MB/s
> > write: Success
> > Filesystem           1K-blocks      Used Available Use% Mounted on
> > /dev/sda1             25798712  10581072  13907140  44% /
> > udev                   1028576       152   1028424   1% /dev
> > /dev/sda2              4127108    126572   3790888   4% /boot
> > /dev/mapper/VG_EXT3_TO_EXT4_MIGRATION_TEST1-LV_EXT3_TO_EXT4_MIGRATION_TEST2
> >                       10321208    154100   9642820   2% /MY_EXT4
> > /dev/mapper/VG_EXT3_TO_EXT4_MIGRATION_TEST1-LV_EXT3_TO_EXT4_MIGRATION_TEST1
> >                       10321208    154232   9642688   2% /MY_EXT3
> > /dev/mapper/VG1_EXT4-LV1_EXT4
> >                      139299998 139259037     40961 100% /root/subrata/ltp/ltp-full-20090930/testcases/bin/mnt_point
> > File is not regular file
> >  "/dev/VG1_EXT4/LV1_EXT4"
> > ext4-online-defrag    8  TFAIL  :  e4defrag returned failure
> > ext4-online-defrag    0  TINFO  :  defrag type: 3, defrag obj: 3, block size: 1024
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > 69630819+0 records in
> > 69630819+0 records out
> > 71301958656 bytes (71 GB) copied, 2544.39 s, 28.0 MB/s
> > File is not regular file
> >  "/dev/VG1_EXT4/LV1_EXT4"
> > ext4-online-defrag    9  TFAIL  :  e4defrag returned failure
> > ...
> > ext4-online-defrag    0  TINFO  :  defrag type: 3, defrag obj: 2, block size: 4096
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > 40+0 records in
> > 40+0 records out
> > 41943040 bytes (42 MB) copied, 0.306366 s, 137 MB/s
> > write: Success
> > write: Success
> > write: Success
> > write: Success
> > write: Success
> > Filesystem           1K-blocks      Used Available Use% Mounted on
> > /dev/sda1             25798712  11441524  13046688  47% /
> > udev                   1028576       152   1028424   1% /dev
> > /dev/sda2              4127108    126572   3790888   4% /boot
> > /dev/mapper/VG_EXT3_TO_EXT4_MIGRATION_TEST1-LV_EXT3_TO_EXT4_MIGRATION_TEST2
> >                       10321208    154100   9642820   2% /MY_EXT4
> > /dev/mapper/VG_EXT3_TO_EXT4_MIGRATION_TEST1-LV_EXT3_TO_EXT4_MIGRATION_TEST1
> >                       10321208    154232   9642688   2% /MY_EXT3
> > /dev/mapper/VG1_EXT4-LV1_EXT4
> >                      139336680 139295720     40960 100% /root/subrata/ltp/ltp-full-20090930/testcases/bin/mnt_point
> > File is not regular file
> >  "/dev/VG1_EXT4/LV1_EXT4"
> > ext4-online-defrag   17  TFAIL  :  e4defrag returned failure
> > ext4-online-defrag    0  TINFO  :  defrag type: 3, defrag obj: 3, block size: 4096
> > mke2fs 1.41.9 (22-Aug-2009)
> > tune2fs 1.41.9 (22-Aug-2009)
> > Setting test filesystem flag
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > dumpe2fs 1.41.9 (22-Aug-2009)
> > 17392985+0 records in
> > 17392985+0 records out
> > 71241666560 bytes (71 GB) copied, 1019.79 s, 69.9 MB/s
> > File is not regular file
> >  "/dev/VG1_EXT4/LV1_EXT4"
> > ext4-online-defrag   18  TFAIL  :  e4defrag returned failure
> > incrementing stop
> > ========================================================================================
> > 
> > Miao,
> > 
> > Did you see these failure on your machine ?
> 
> Your take on this ?
> 
> > Some more points are:
> > 
> >      1. Can you please run these tests against the backdrop of the
> >         Makefile changes in LTP to see all the build/install/run are
> >         executing fine,
> 
> Could you please verify this before this release. Let me know a patch if
> you find any discrepancy :-)
> 
> > 2. Can you also please put all the utilities version info at the
> >         beginning of the test rather than printing them again and
> >         again(like mke2fs 1.41.9 (22-Aug-2009),tune2fs 1.41.9
> >         (22-Aug-2009),dumpe2fs 1.41.9 (22-Aug-2009),dumpe2fs 1.41.9
> >         (22-Aug-2009))
> 
> This can go in the next month release as well, if you do not have time
> to fix now. Else, i have a bug mouth to eat this as well ;-)
> 
> Regards--
> Subrata
> 
> > 
> > Regards--
> > Subrata
> > 
> > > 
> > > > Following the various system information on which we ran the test:
> > > > 1) uname -a
> > > > Linux 2.6.31 #1 SMP Tue Oct 20 22:57:16 IST 2009 i686 i686 i386
> > > > GNU/Linux
> > > >
> > > > 2) grep -i ext4 .config
> > > > CONFIG_EXT4_FS=m
> > > > CONFIG_EXT4DEV_COMPAT=y
> > > > CONFIG_EXT4_FS_XATTR=y
> > > > CONFIG_EXT4_FS_POSIX_ACL=y
> > > > CONFIG_EXT4_FS_SECURITY=y
> > > >
> > > > 3) mkfs.ext4 -V
> > > > mke2fs 1.41.9 (22-Aug-2009)
> > > >        Using EXT2FS Library version 1.41.9
> > > > e2fsprogs-1.41.9
> > > > e2fsprogs-libs-1.41.9
> > > >
> > > > 4) LTP used:
> > > > Unreleased CVS repository. See the URL below to download:
> > > > http://ltp.sourceforge.net/documentation/how-to/ltp.php#_3.1,
> > > >
> > > > You can also also directly review the attached patch(which added this
> > > > test cases):
> > > > 26_10_2009-(Miao-Xie<miaox@cn.fujitsu.com>)- 
> > > > Add_new_testcases_for_ext4_new_features_V3.patch.regenerated,
> > > >
> > > > 5) I used a single 680GB LVM partition to test this.
> > > >
> > > > Kindly let us know your thoughts on this failures.
> > > 
> > > Cheers, Andreas
> > > --
> > > Andreas Dilger
> > > Sr. Staff Engineer, Lustre Group
> > > Sun Microsystems of Canada, Inc.
> > > 
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> 
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