[Ocfs2-tools-devel] [PATCH 0/11] Ocfs2-tools: Add new tool[o2info] to ocfs2-tools: V5.

Fri Jan 8 01:06:16 PST 2010

No significant changes made from v4 to v5, just are following:

1. Use ocfs2_ioctl.h instead of ioctl.h

2. Try to statistic xattr extents/clusters by 'o2info --filestat', 
though current kernel didn't support this.

Tristan.

tristan wrote:
> Major changes from v3 to v4:
>
> Mainly incorporate the comments by joel and tao.
>
>
> Tristan.
>
> tristan wrote:
>> Major changes from v2 to v3:
>>
>> 1. Apply tao's comments on v2.
>> 2. Add manpage.
>>
>> Regards,
>> Tristan
>>> Hi all,
>>>
>>> I'm posting a new v2 o2info patch series after a simple sanity 
>>> check, which has implemented all desired functions in design doc,
>>> I knew it still was in a draft version, and some bugy and 
>>> unreasonable codes do exist, especially for the kernel part for new 
>>> OCFS2_INFO_IOC ioctls since I'm still a newbie here:-), just wanna 
>>> you guys take a quick review in a early time, that's the main reason 
>>> why I sent these patches internally:-).
>>>
>>> Btw, how we handle the ea extents/clusters when filestating a ea 
>>> attached file? shall we display them?
>>>
>>> Some simple tests as follows:
>>> ------------------------------------------------------------------------------------------------------- 
>>>
>>> # ./o2info
>>> Usage: o2info [options] <device or file>
>>> o2info -h|--help
>>> o2info -v|--version
>>> [options] can be followings:
>>> -V|--volinfo <device or file>
>>> --fs-features <device or file>
>>> -S|--filestat <file>
>>> -F|--freefrag <chunksize in KB> <device or file>
>>> -I|--freeinode <device or file>
>>> ------------------------------------------------------------------------------------------------------- 
>>>
>>> # ./o2info --fs-features /dev/sdf1
>>> # ./o2info --fs-features /storage/testfile
>>> Feature Compat: 3 BackupSuper JBD2SuperBlock
>>> Feature Incompat: 80 Sparse InlineData
>>> Feature RO compat: 1 UnwrittenExtents
>>>
>>> #./o2info --volinfo /storage/testfile
>>> #./o2info --volinfo /dev/sdf1
>>> Block Size: 4096
>>> Cluster Size: 32768
>>> Node Slots: 8
>>> Label: o2info_test
>>> UUID: 06382A8D24C2458C881074D63AB7FD0F
>>> ------------------------------------------------------------------------------------------------------- 
>>>
>>> #./o2info --filestat /storage/tao-latest-kernel/REPORTING-BUGS
>>> File: /storage/tao-latest-kernel/REPORTING-BUGS
>>> Size: 3172 Blocks: 0 IO Block: 4096 regular file
>>> Device: 851h/2129d Inode: 1311591 Links: 1
>>> Frag%: 0.00 Clusters: 0 Extents: 1 Score: 0
>>> Shared: 0 Unwritten: 0 Holes: 0
>>> Access: (0644/-rw-r--r--) Uid: ( 0/ root) Gid: ( 0/ root)
>>> Access: 2009-12-15 16:56:58.502408105 +0800
>>> Modify: 2009-12-15 16:56:58.515710166 +0800
>>> Change: 2009-12-15 16:56:58.515710166 +0800
>>> ------------------------------------------------------------------------------------------------------- 
>>>
>>> #./o2info --freefrag 64 /storage/tao-latest-kernel/README
>>> #./o2info --freefrag 64 /dev/sdf1
>>> Blocksize: 4096 bytes
>>> Clustersize: 32768 bytes
>>> Total clusters: 3136439
>>> Free clusters: 2914837 (92.9%)
>>>
>>> Min. free extent: 8160 KB
>>> Max. free extent: 1032160 KB
>>> Avg. free extent: 942144 KB
>>>
>>> Chunksize: 65536 bytes (2 clusters)
>>> Total chunks: 1568220
>>> Free chunks: 1457369 (92.9%)
>>>
>>> HISTOGRAM OF FREE EXTENT SIZES:
>>> Extent Size Range : Free extents Free Clusters Percent
>>> 4M... 8M- : 4 1020 0.03%
>>> 8M... 16M- : 1 511 0.02%
>>> 32M... 64M- : 1 2047 0.07%
>>> 128M... 256M- : 2 15797 0.54%
>>> 512M... 1024M- : 91 2895462 99.34%
>>> ------------------------------------------------------------------------------------------------------- 
>>>
>>> #./o2info --freeinode /dev/sdf1
>>> #./o2info --freeinode /storage/tao-latest-kernel/README
>>> Slot Space Free
>>> 0 33792 2
>>> 1 48128 380
>>> 2 0 0
>>> 3 0 0
>>> 4 0 0
>>> 5 0 0
>>> 6 0 0
>>> 7 0 0
>>> Total 81920 382
>>> ------------------------------------------------------------------------------------------------------- 
>>>
>>>
>>>
>>> Regards,
>>> Tristan
>>>
>>> Tristan wrote:
>>>> V1 version is a very much preliminary implementation, It fulfill 2 
>>>> options from design doc.
>>>>
>>>> 1. --volfino
>>>> 2. --fs-features
>>>>
>>>> It used newly-added ioctls in ocfs2 to gather filesys info from 
>>>> none-privileged end-user in a mounted case,
>>>> while it also support super user to use libocfs2 to access the same 
>>>> info, as in,
>>>>
>>>> #o2info --fs-features /dev/sdax
>>>>
>>>> #o2info --fs-features /storage
>>>>
>>>> Above 2 methods dump the same info we requested.
>>>>
>>>> I posted the patches to get it reviewed early though only 2 options 
>>>> get finished.
>>>>
>>>>
>>>> Regards,
>>>> Tristan.
>>>>
>>>> Tristan wrote:
>>>>> Hi all,
>>>>>
>>>>> Inspired by extN's e2freefrag tool, we're going to add a new tool 
>>>>> to provide some important information to users which missed from 
>>>>> our early ocfs2-tools:
>>>>> such as global bitmap free space fragmentation , free inode info, 
>>>>> new extended inode information etc. The information it shows 
>>>>> should be comprehensive and integrated enough to cover most of the 
>>>>> infos in ocfs2 fs.
>>>>>
>>>>> Refer to http://oss.oracle.com/osswiki/OCFS2/ToolsTasksList for 
>>>>> more details.
>>>>>
>>>>> The v1 implementation is essentially a draft which built a raw 
>>>>> framework of the tool ,then implement several operations(such as 
>>>>> volinfo, fs-features and filestat), and I do want it get reviewed 
>>>>> early before all operations completed.
>>>>>
>>>>> One of our goals is to modularize the code and make it scalable 
>>>>> enough to add new operations.
>>>>>
>>>>> Work-in-progress:
>>>>>
>>>>> 1. operations for --freefrag and --freeinode.
>>>>>
>>>>> 2. o2info.8.in manual file.
>>>>>
>>>>>
>>>>> Regards,
>>>>> Tristan.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Ocfs2-tools-devel mailing list
>>>>> Ocfs2-tools-devel at oss.oracle.com
>>>>> http://oss.oracle.com/mailman/listinfo/ocfs2-tools-devel
>>>>
>>>>
>>>> _______________________________________________
>>>> Ocfs2-tools-devel mailing list
>>>> Ocfs2-tools-devel at oss.oracle.com
>>>> http://oss.oracle.com/mailman/listinfo/ocfs2-tools-devel
>>>
>>
>