On 11/06/2012 06:57 AM, David Sterba wrote:
> On Thu, Nov 01, 2012 at 05:17:04AM +0800, ching wrote:
>>>> 3. Is any possible to online defrag a btrfs partition without hindered by
>>>> mount point/polyinstantied directories?
>>> Sorry, I do not understand the q
is polyinstantied, files in the original directory is
"hidden", and files in the polyinstantied directory is "available",
How to get past them and pass those "hidden" files to defrag command?
ching
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On 10/31/2012 08:12 AM, David Sterba wrote:
> On Wed, Oct 31, 2012 at 07:47:14AM +0800, ching wrote:
>> On 10/31/2012 06:19 AM, Hugo Mills wrote:
>>> On Tue, Oct 30, 2012 at 10:14:12PM +, Hugo Mills wrote:
>>>>> if i have 10G small files in total, th
On 10/31/2012 08:18 AM, cwillu wrote:
> import os
> import sys
>
> data = "1" * 1024 * 3
>
> for x in xrange(100 * 1000):
> with open('%s/%s' % (sys.argv[1], x), 'a') as f:
> f.write(data)
>
> root@repository:~$ mount -o loop ~/inline /mnt
> root@repository:~$ mount -o loop,max_inline=0 ~/non
On 10/30/2012 08:08 PM, cwillu wrote:
> On Tue, Oct 30, 2012 at 5:47 AM, ching wrote:
>> Hi all,
>>
>> I try to defrag my btrfs root partition (run by root privilege)
>>
>> find / -type f -o -type d -print0 | xargs --null --no-run-if-empty btrfs
>> f
On 10/31/2012 06:19 AM, Hugo Mills wrote:
> On Tue, Oct 30, 2012 at 10:14:12PM +, Hugo Mills wrote:
>> On Wed, Oct 31, 2012 at 05:40:25AM +0800, ching wrote:
>>> On 10/30/2012 08:17 PM, cwillu wrote:
>>>>>> If there is a lot of small files, then the size of
On 10/31/2012 06:16 AM, cwillu wrote:
> On Tue, Oct 30, 2012 at 3:40 PM, ching wrote:
>> On 10/30/2012 08:17 PM, cwillu wrote:
>>>>> If there is a lot of small files, then the size of metadata will be
>>>>> undesirable due to deduplication
>>>&
the total storage used by
> inlining will be _smaller_, as the allocation doesn't need to be
> aligned to the sector size.
>
if i have 10G small files in total, then it will consume 20G by default.
ching
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On 10/30/2012 08:04 PM, Felix Pepinghege wrote:
> Hi ching!
>
> Am 30.10.2012 12:04, schrieb ching:
>> Hi all,
>>
>> I am testing my btrfs root partition with "max_inline=0", and 64k leaf size
>> for weeks and it seems that it is fine.
>>
>
"max_inline=0"
3. Is any possible to online defrag a btrfs partition without hindered by mount
point/polyinstantied directories?
Thank you.
ching
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g/msg16295.html
http://www.mail-archive.com/linux-btrfs@vger.kernel.org/msg05265.html
How about turning off inline so that btrfs works better "out of the box"?
ching
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On 09/26/2012 11:23 PM, David Sterba wrote:
> On Wed, Sep 26, 2012 at 07:48:47PM +0800, ching wrote:
>> There is a typo (?) in inode.c (git)
> What's the top commit and what git tree?
>
> This has been fixed in 3.6-rc4 via
> 287082b0bd10060e9c6b32ed9605174ddf2f672a
>
There is a typo (?) in inode.c (git)
i guess the "int limit = 10 * 1024 * 1042;" should be "int limit = 10 * 1024 *
1024;" instead
Could developer fix this typo?
static int cow_file_range_async(struct inode *inode, struct page *locked_page,
u64 start, u64 end, i
On 09/25/2012 06:51 PM, David Sterba wrote:
> On Mon, Sep 24, 2012 at 11:03:49PM +0200, David Sterba wrote:
>> Could you please put the check into a separate helper
> Please note that checksum will become a variable per-filesystem
> property, stored within the superblock, so the helper should be pa
On 09/25/2012 06:51 PM, David Sterba wrote:
> On Mon, Sep 24, 2012 at 11:03:49PM +0200, David Sterba wrote:
>> Could you please put the check into a separate helper
> Please note that checksum will become a variable per-filesystem
> property, stored within the superblock, so the helper should be pa
>> Is there any io niceness control for autodefrag process too? it will
>> be nice if the idle class is used.
> No. Autodefrag will mark file data dirty and they'll be written back to
> the storage in the same way as any other write through the worker
> threads.
>
>
AFAIK, the autodefrag will rea
>>> 2. AFAIK, "autodefrag" detects small random writes into files and
>>> queues them up for an automatic defrag process, so the filesystem will
>>> defragment itself while it's used.
>>>
>>> If the system reboot/crash/remount-ro, will the autodefrag process
>>> continue after resume?
>>>
> Fo
can anybody helps?
On 09/17/2012 07:15 PM, ching wrote:
> I am testing btrfs for long-term storage and backup, and i would like
> to know more about "autodefrag" option:
>
> 1. Will "autodefrag" option benefit ssd?
>
> My understanding is:
>
>
I am testing btrfs for long-term storage and backup, and i would like
to know more about "autodefrag" option:
1. Will "autodefrag" option benefit ssd?
My understanding is:
autodrag -> number of extent decrease -> metadata decrease -> a
"healthier" filesystem in the long run
(P.S.
On 09/13/2012 09:00 PM, Josef Bacik wrote:
> On Thu, Sep 13, 2012 at 12:02:04AM -0600, ching lu wrote:
>> I am trying to test btrfs on my ssd, i am studying about btrfs and alignment.
>>
>> I have read this old mail:
>> http://www.mail-archive.com/linux-btrfs@vg
On 09/11/2012 07:45 PM, David Sterba wrote:
> On Tue, Sep 11, 2012 at 07:12:58PM +0800, ching wrote:
>>> 1. According to btrfs wiki, defragment a COW file will produce two
>>> unrelated files.
>>>
>>> Does it apply to the "autodefrag" mount
On 09/09/2012 08:03 AM, ching wrote:
> Hi all,
>
> i am new on btrfs, i am testing KVM on btrfs (host: kernel x86-64 3.5.3), the
> performance is reasonable.
>
> I have two question on defrag, can someone help me?
>
> 1. According to btrfs wiki, defragment a COW file wi
On 09/11/2012 09:28 AM, Li Zefan wrote:
>> may i ask a stupid question, if i remove my "compress-force=lzo" option,
>> will compression disabled for new written data?
> the answer is yes. :)
>
>
The problem seems fixed. The number of extent decrease to 14055 after defrag
with compression off.
--
On 09/10/2012 09:10 PM, Liu Bo wrote:
> On 09/10/2012 08:19 PM, ching wrote:
>> On 09/09/2012 08:05 PM, ching wrote:
>>> On 09/09/2012 05:11 PM, Fajar A. Nugraha wrote:
>>>> On Sun, Sep 9, 2012 at 2:49 PM, ching wrote:
>>>>> On 09/09/2012 08:30 AM, J
On 09/09/2012 08:05 PM, ching wrote:
> On 09/09/2012 05:11 PM, Fajar A. Nugraha wrote:
>> On Sun, Sep 9, 2012 at 2:49 PM, ching wrote:
>>> On 09/09/2012 08:30 AM, Jan Steffens wrote:
>>>> On Sun, Sep 9, 2012 at 2:03 AM, ching wrote:
>>>>> 2. Is there
On 09/09/2012 05:11 PM, Fajar A. Nugraha wrote:
> On Sun, Sep 9, 2012 at 2:49 PM, ching wrote:
>> On 09/09/2012 08:30 AM, Jan Steffens wrote:
>>> On Sun, Sep 9, 2012 at 2:03 AM, ching wrote:
>>>> 2. Is there any command for the fragmentation status of a file/
On 09/09/2012 08:30 AM, Jan Steffens wrote:
> On Sun, Sep 9, 2012 at 2:03 AM, ching wrote:
>> 2. Is there any command for the fragmentation status of a file/dir ? e.g.
>> fragment size, number of fragments.
> Use the "filefrag" command, part of e2fsprogs.
>
my im
Hi all,
i am new on btrfs, i am testing KVM on btrfs (host: kernel x86-64 3.5.3), the
performance is reasonable.
I have two question on defrag, can someone help me?
1. According to btrfs wiki, defragment a COW file will produce two unrelated
files.
Does it apply to the "autodefrag" mount
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