* Problems with Online Defragmentation (was: Re: bugs of Online Defragmentation)
@ 2008-12-22 5:36 Zhang Xiliang
2008-12-24 2:43 ` Akira Fujita
0 siblings, 1 reply; 2+ messages in thread
From: Zhang Xiliang @ 2008-12-22 5:36 UTC (permalink / raw)
To: Akira Fujita, linux-ext4
Hi,
I tested Online Defrag by using the new code.
When I have space left which is less than 40M, I can't use e4defrag function.
Does the Online Defragmentation need some space left which is greater than a value? 40M?
--
Regards
Zhang Xiliang
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Problems with Online Defragmentation (was: Re: bugs of Online Defragmentation)
2008-12-22 5:36 Problems with Online Defragmentation (was: Re: bugs of Online Defragmentation) Zhang Xiliang
@ 2008-12-24 2:43 ` Akira Fujita
0 siblings, 0 replies; 2+ messages in thread
From: Akira Fujita @ 2008-12-24 2:43 UTC (permalink / raw)
To: Zhang Xiliang; +Cc: linux-ext4
Hi,
Zhang Xiliang wrote:
> Hi,
>
> I tested Online Defrag by using the new code.
> When I have space left which is less than 40M, I can't use e4defrag
> function.
>
> Does the Online Defragmentation need some space left which is greater
> than a value? 40M?
>
Yes. Ext4 online defrag needs more than the target file size.
In this case, your file size might be greater than left space.
If you failed in defrag, -v option might be helpful
to find the reason as follows:
[root@bsd086 KERN]# ./e4defrag -v /mnt/mp1/file1
ext4 defragmentation for /mnt/mp1/file1
[1/1] "/mnt/mp2/WORK/file1"
Defrag size is larger than FileSystem's free space [ NG ]
Success: [0/1]
Regards,
Akira Fujita
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