On Sat, May 25, 2013 at 09:05:25AM +0200, Paolo Bonzini wrote: > Linus wanted to keep that for CAP_SYS_RAWIO. We found two uses of SG_IO > on partitions: zfs-fuse used SYNCHRONIZE CACHE; some proprietary driver > used TEST UNIT READY. FYI I looked at the zfs code and the way it uses it is part of a huge braindamage. Given that the upstream appears dead I've Cc'd Asias He as he appears to somehow maintain it as part of the Debian package. Asias, the flushwc() routine in zfs-fuse is overly complicated and will not do the right thing for many cases like using device mapper, many modern SSD device, or much simple file backed filesystems. Fortunately fixing this is trivial - the call to flushwc can be replaced with a call to fdatasync() and the the kernel will do the right thing for any backing device or file. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
