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From: | Jamie Lokier |
Subject: | Re: [Qemu-devel] [PATCH VERSION 3] Disk image exclusive and shared locks. |
Date: | Thu, 17 Dec 2009 15:38:57 +0000 |
User-agent: | Mutt/1.5.13 (2006-08-11) |
Christoph Hellwig wrote: > If you want to provide > protection against mounting the image on the host or scribbling over it > using mkfs you need to open the block device node with O_EXCL on Linux > as that's the mechanisms most tools and the filesystem code us for > exclusion. Due to that I do suggest opening block devices with O_EXCL when exclusive locking is requested. -- Jamie
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