linux-ext4 - Re: [PATCH v2] xfstests: add support for ext4dev FSTYP

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Message-ID: <BANLkTimbPWfOJKq6er4mnSYNPcx6VHLcrw@mail.gmail.com>
Date:	Thu, 2 Jun 2011 05:33:34 +0300
From:	"Amir G." <amir73il@...rs.sourceforge.net>
To:	Dave Chinner <david@...morbit.com>
Cc:	xfs@....sgi.com, sandeen@...hat.com, linux-ext4@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, sergey57@...il.com,
	Amir Goldstein <amir73il@...rs.sf.net>
Subject: Re: [PATCH v2] xfstests: add support for ext4dev FSTYP

On Thu, Jun 2, 2011 at 5:16 AM, Amir G. <amir73il@...rs.sourceforge.net> wrote:
> On Thu, Jun 2, 2011 at 2:28 AM, Dave Chinner <david@...morbit.com> wrote:
>> On Wed, Jun 01, 2011 at 03:56:52PM +0300, amir73il@...rs.sourceforge.net wrote:
>>> From: Amir Goldstein <amir73il@...rs.sf.net>
>>>
>>> From: Amir Goldstein <amir73il@...rs.sf.net>
>>>
>>> blkid knows to identify the ext4dev FSTYP of a partition that was
>>> formatted with mkfs.ext4dev.
>>> quota tools and various util-linux utils are also aware of ext4dev,
>>> so ext4dev shares the same capabilities as ext4.
>>>
>>> Signed-off-by: Amir Goldstein <amir73il@...rs.sf.net>
>>> Tested-by: Sergey Ivanov <sergey57@...il.com>
>>> ---
>>> ext4dev is used to test experimental ext4 code in mutual existance
>>> with production ext4 code on the same system.
>>>
>>> Specifically, ext4 snapshots code is available for testing as a
>>> stand-alone ext4dev module for Fedora 15 and Ubuntu 11.4
>>> (see http://next3.sf.net).
>>>
>>> v1 -> v2:
>>> - undo change of fsck -t $FSTYP to fsck.$FSTYP
>>>
>>>  common.defrag |    2 +-
>>>  common.quota  |    4 ++--
>>>  common.rc     |   10 +++++-----
>>>  3 files changed, 8 insertions(+), 8 deletions(-)
>>>
>>> diff --git a/common.defrag b/common.defrag
>>> index 1bcf01d..4850803 100644
>>> --- a/common.defrag
>>> +++ b/common.defrag
>>> @@ -26,7 +26,7 @@ _require_defrag()
>>>      xfs)
>>>          DEFRAG_PROG=/usr/sbin/xfs_fsr
>>>       ;;
>>> -    ext4)
>>> +    ext4|ext4dev)
>>>          DEFRAG_PROG=/usr/bin/e4defrag
>>>       ;;
>>>      *)
>>> diff --git a/common.quota b/common.quota
>>> index 3c87ce1..b6d5f16 100644
>>> --- a/common.quota
>>> +++ b/common.quota
>>> @@ -29,7 +29,7 @@ _require_quota()
>>>      [ -n $QUOTA_PROG ] || _notrun "Quota user tools not installed"
>>>
>>>      case $FSTYP in
>>> -    ext2|ext3|ext4|reiserfs)
>>> +    ext2|ext3|ext4|ext4dev|reiserfs)
>>>       if [ ! -d /proc/sys/fs/quota ]; then
>>>           _notrun "Installed kernel does not support quotas"
>>>       fi
>>> @@ -237,7 +237,7 @@ _check_quota_usage()
>>>       # Sync to get delalloc to disk
>>>       sync
>>>       VFS_QUOTA=0
>>> -     if [ $FSTYP = "ext2" -o $FSTYP = "ext3" -o $FSTYP = "ext4" -o $FSTYP = "reiserfs" ]; then
>>> +     if [ $FSTYP = "ext2" -o $FSTYP = "ext3" -o $FSTYP = "ext4" -o $FSTYP = "ext4dev" -o $FSTYP = "reiserfs" ]; then
>>>               VFS_QUOTA=1
>>>               quotaon -f -u -g $SCRATCH_MNT 2>/dev/null
>>>       fi
>>
>> Perhaps this should be changes to a case statement?
>>
>
> you're making me go to v3 in such a trivial patch, but ok, I'll do it ;-)
>

I rechecked the fsck -t ext4dev vs. fsck.ext4dev.
fsck -t ext4dev doesn't work for me :-(
Sergey has a newer version of  util-linux-ng
see:

amir@...ab:~/xfstests$ sudo fsck -t ext4dev -nf /dev/sda5
fsck from util-linux-ng 2.17.2
e2fsck 1.41.14 (22-Dec-2010)
/dev/sda5 has unsupported feature(s): FEATURE_C7 FEATURE_C8 FEATURE_R7
e2fsck: Get a newer version of e2fsck!
amir@...ab:~/xfstests$ sudo fsck.ext4dev -nf /dev/sda5
e2fsck 1.41.14-next3-1.0.13-7 (24-May-2011)
Checking snapshots: 1,done
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
/dev/sda5: 6596/6561792 files (3.6% non-contiguous), 1242522/26216064 blocks
amir@...ab:~/xfstests$

What do you thing, Dave?
Should xfstests rely on a non-buggy generic fsck util, or just
implement it's own
non-buggy generic fsck (invoke fsck.$FSTYP directly)
I am running a recent system (Ubuntu 11.4) and I don't thing that upgrading
util-linux should be a requirement for xfstests to work.


>> Cheers,
>>
>> Dave.
>>
>> --
>> Dave Chinner
>> david@...morbit.com
>> --
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>
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