On Tuesday, September 24, 2013 3:38:39 AM CDT, Ross Boylan wrote:
I would like to have access to the same file system from the host and the guest. Can anyone recommend the best way to do this, considering ease of use, safety (concurrent access from guest and host does not corrupt) and performance? For example, I would like to restore files from backup using the host, but write to filesystems used by the guest. I have previously used kvm mostly with disks that are based on LVM logical volumes, e.g. -hda /dev/turtle/Squeeze00. Since the LVs are virtual disks, I can't just mount them in the host AFAIK. Among the alternatives I can think of are using NFS and using NBD. Maybe there's some kind of loopback device I could use on the disk image to access it from the host.
I would suggest NFS/CIFS generally speaking. 9p/virtio is an option, but NFS and CIFS are going to be far more stable, tested, and fast.
Host: Debian GNU/Linux wheezy, amd64 architecture, qemu-kvm 1.1.2 Guest: Debian GNU/Linux lenny i386. Host processor is a recent i5 with good virtualization (flaga: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm ida arat epb xsaveopt pln pts dtherm tpr_shadow vnmi flexpriority ept vpid fsgsbase smep erms) Thanks. Ross Boylan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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