[mythtv-users] ext4 mkfs largefile4 option

[Raymond Wagner]

On 3/7/2013 11:25, Stephen Worthington wrote:
> On Thu, 07 Mar 2013 11:00:13 -0500, you wrote:
>
>> On 3/7/2013 10:42, Stephen Worthington wrote:
>>> On Thu, 07 Mar 2013 07:52:09 -0700, you wrote:
>>>
>>>> On 03/07/2013 02:07 AM, Stephen Worthington wrote:
>>>>>
>>>>> The recommended filesystem for a recordings partition is JFS or XFS:
>>>>>
>>>>>      http://www.mythtv.org/docs/mythtv-HOWTO-3.html
>>>>>      (search for "Filesystems")
>>>>>
>>>>> I use JFS on my 3 Tbyte drives and am very happy with it.
>>>>>
>>>> but has the documentation been updated to reflect the fact that ext4 is
>>>> available? I am currently using xfs, but the bench marks seem comparable:
>>>>
>>>> http://www.phoronix.com/scan.php?page=article&item=ext4_benchmarks&num=2
>>>
>>> No, the documentation does not appear to have been updated to
>>> recognise the existence of ext4.  But the major problem with ext
>>> filesystems and MythTV is with the time taken to do file deletes of
>>> large files.  I do not think that has changed in ext4 - the benchmarks
>>> on that page you refer to shows that.
>>
>> I don't see any benchmark related to file deletion on that article, and
>> in fact deletion of large files is a fairly atypical usage pattern.
>> Mythbuntu has defaulted to EXT4 for several years now, and I've not
>> heard any problems of people having to enable the 'slow deletes' option
>> in MythTV intended for EXT2/3.
>
> The first benchmark on that page is "4 GB Random Delete".

Heh. Not sure how I missed that one...