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Re: call for brave ext4 testers in F9, with caveats



David G. Mackay wrote:
> On Mon, 2008-02-04 at 11:23 -0600, Eric Sandeen wrote:
> 
>> I'd like to get a bit more exposure if possible, so if you're feeling
>> like living on the cutting edge of filesystems, read on:
> 
> OK, I've set up a 10GB disk image and installed F9-Alpha into a VM using
> kvm.  The installation went pretty much as your post suggested.
> Attempting to boot with selinux enforcing gave me a panic.  Booting with
> enforcing=0 worked (with lots of AVC messages logged).  A restorecon on
> root allowed me to reboot with selinux set to enforcing without
> problems.
> 
> Just for fun, I filled up the availabe space with 1MB files and then
> deleted them with no trouble.  Then I wrote a 3 GB file and killed the
> VM without closing the file.  It recovered without a hiccup.

Cool, all good news.

> Do you have any suggestions on how it can be further abused?

I suppose anything you can do to stress it; maybe run it with not much
memory, lots of memory pressure... just do daily things, as well.

Since the larger inodes hold xattrs, and that's a change from before,
maybe you could do more with that; set up a samba server which uses lots
of acls?  Or run beagle over it :)

I'm also interested in how the filesystem ages, so just going through
normal usage & updates, we can run filefrag over the filesystem
eventually to see how the allocator is holding up.  And if er... when we
ever get an e2fsprogs which can check it, we can look for any hidden
problems after the fs has been in use for a while.

Thanks!

-Eric


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