Re: ext4 state user question

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Christian Fischer wrote:
Hello,

I have not found a ext4-user list or something similar, that's why my user question goes to this development list.

I think user questions are fine here, but thanks for asking.  :)

I had a lot of file system crashes with xfs the last time, Eric knows that, if he remembers.

I look for an alternate file system for our new production servers, and I need to use 2.6.29.4 for the moment due to all systems running on xen, and as far as I know 2.6.29.4 xen patched ist the best solution at the moment.

I've updated all xen kernels from 2.6.18 (which is the latest official xen kernel) to 2.6.29.4 because xfs tried to write to the superblock to run into the next bug, a radix_tree problem with xfs over nfs. I've backported 2.6.30 patches to avoid the problem, that runs at the moment.

But I don't feel like waiting for the next crash.

I was never before as unshure as now which file system is to choose, IMO I have the choice between zfs on solaris, xfs or ext4. Zfs is not really ported to linux, the stable time of xfs seems gone, and ext4 is relatively young.

I think the xfs problems are sorted; you hit a bad spot, but Christoph got it worked out.

What do you think, is ext4 with 2.6.29.4 ready for productive work and to prefer over xfs at the moment?

As for ext4, I don't know of any current problems that would stop you from using it for this purpose. But had you asked about xfs a month ago I would have said the same thing. :) I can say that ext4 is the default for F11, and I have had very few bug reports from users.

All software has bugs, unfortunately, though we do our best. In the end, testing in your environment is the only way to know for sure what best suits your needs, I think.

-Eric

Best Regards
Christian

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