* How can I do online resize from 14TB to 30TB?
@ 2010-11-09 10:06 寬
2010-11-09 21:29 ` Andreas Dilger
0 siblings, 1 reply; 3+ messages in thread
From: 寬 @ 2010-11-09 10:06 UTC (permalink / raw)
To: linux-ext4
I saw the mail "E2fsprogs master branch now has all 64-bit patch applied" written by Ted. Ext4 with 64bit couldn't do online resize which is larger than 16TB, because "meta_bg" in kernel is not ready.
However, it really took lots of time to do off-line resizing. Could I do online resize without meta_bg? Or what can I do for e2fsprogs to support online resize for larger than 16TB?
Best regards,
Chien-kuan.
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: How can I do online resize from 14TB to 30TB?
2010-11-09 10:06 How can I do online resize from 14TB to 30TB? 寬
@ 2010-11-09 21:29 ` Andreas Dilger
2010-11-09 22:12 ` Justin Maggard
0 siblings, 1 reply; 3+ messages in thread
From: Andreas Dilger @ 2010-11-09 21:29 UTC (permalink / raw)
To: 寬; +Cc: linux-ext4
On 2010-11-09, at 03:06, 寬 wrote:
> I saw the mail "E2fsprogs master branch now has all 64-bit patch applied" written by Ted. Ext4 with 64bit couldn't do online resize which is larger than 16TB, because "meta_bg" in kernel is not ready.
>
> However, it really took lots of time to do off-line resizing. Could I do online resize without meta_bg? Or what can I do for e2fsprogs to support online resize for larger than 16TB?
For the current time there will be no support for resizing a filesystem formatted < 16TB to one > 16TB.
Cheers, Andreas
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: How can I do online resize from 14TB to 30TB?
2010-11-09 21:29 ` Andreas Dilger
@ 2010-11-09 22:12 ` Justin Maggard
0 siblings, 0 replies; 3+ messages in thread
From: Justin Maggard @ 2010-11-09 22:12 UTC (permalink / raw)
To: ext4 development
2010/11/9 Andreas Dilger <adilger.kernel@dilger.ca>:
> On 2010-11-09, at 03:06, 寬 wrote:
>> I saw the mail "E2fsprogs master branch now has all 64-bit patch applied" written by Ted. Ext4 with 64bit couldn't do online resize which is larger than 16TB, because "meta_bg" in kernel is not ready.
>>
>> However, it really took lots of time to do off-line resizing. Could I do online resize without meta_bg? Or what can I do for e2fsprogs to support online resize for larger than 16TB?
>
> For the current time there will be no support for resizing a filesystem formatted < 16TB to one > 16TB.
>
On a related topic, currently 4KB-block ext4 filesystems with the
64bit flag set apparently can only expand online by a max increase of
8TB (16TB without 64bit), even if you specify a larger value with -E
resize=XXX. Are there any plans to improve this?
Thanks,
-Justin
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2010-11-09 10:06 How can I do online resize from 14TB to 30TB? 寬
2010-11-09 21:29 ` Andreas Dilger
2010-11-09 22:12 ` Justin Maggard
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