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Re: [Xen-devel] [PATCH] Blktap: Userspace file-based image support. (RFC
| To: | danms@xxxxxxxxxx |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] Blktap: Userspace file-based image support. (RFC) |
| From: | Julian Chesterfield <jac90@xxxxxxxxxxxx> |
| Date: | Tue, 20 Jun 2006 14:57:37 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Tue, 20 Jun 2006 07:04:51 -0700 |
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Another question I have is this: doesn't the dependence on libaio limit you to certain filesystems? For example, the page for libaio doesn't mention reisferfs as supported. Does that mean that SLES users won't be able to use ublkback? Dan, I've just tested blktap with a reiserfs base filesystem. There were no errors opening files with O_DIRECT, and the performance is proportionally similar to ext3 (average block reads close to native, average block writes above 80% under bonnie++). I'll explore further, however it seems that O_DIRECT is supported. Thanks, Julian Thanks for posting your code Andrew! -- Dan Smith IBM Linux Technology Center Open Hypervisor Team email: danms@xxxxxxxxxx ------ End of Forwarded Message <Attachment (application_pgp-signature document)> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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