ext4 testing in the F10 release cycle

[Eric Sandeen]

Jeremy Katz wrote:
> On Wed, 2008-09-03 at 20:06 -0500, Eric Sandeen wrote:
>> Eric Sandeen wrote:
>>> Chris Snook wrote:
>>>> c)	Put an alignment option in the installer, so people can optimize their 
>>>> partitions and filesystems for SSDs, RAID, and anything else where alignment 
>>>> matters.
>>> mkfs should be doing this, not the installer.  mkfs.xfs does;
>>> mkfs.ext$FOO should too.
>> I should qualify that; "can" if it's on storage that can be queried (md,
>> lvm, etc - but not some random hardware scsi lun ... for that case
>> perhaps installer tweaks maybe, but how often do you really install onto
>> these things at anaconda-time?
> 
> mkfs should be able to query scsi info about a block device just as well
> as anaconda...  Arguably it could be done in anaconda first just to show
> that it works nicely (as python is easier to hack on ;-)  

Well, I meant in some cases where you simply cannot query the device,
then *if* you wish to make the fs via anaconda, you'd need some knobs to
twiddle manually...

> But it definitely should be "hardware as seen as blah, do the right
> thing" as opposed to "make the user figure it out".  
> 
> Also, there are some additional complications once you start thinking
> about things like the live install where we just dd over the filesystem
> and then resize rather than doing a whole new one.

in that case you really are probably not too worried about fs geometry
and performance, I think.

-Eric