[Bug 1018530] Re: No write access in a 9p/virtfs shared folder

2012-07-11 Thread M. Mohan Kumar
Georg,

pass-through security model needs root privilege, if you want to run
qemu as non-root user either you have to use mapped security model or
proxy fs driver. But libvirt does not have support for proxy FS driver.
I posted a patch few months ago to libvirt for enabling the same. I will
do the followup with libvirt list to enable proxy FS in libvirt.

So could you please try mapped security model or run  qemu as root user
and update the results?

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Title:
  No write access in a 9p/virtfs shared folder

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[Bug 1018530] Re: No write access in a 9p/virtfs shared folder

2012-07-09 Thread M. Mohan Kumar
No, commit  daf0b9aca9f67323266af1a92e8ea06f9d7bf408 added create
support proxy FS driver model. Local FS had support for creating files
much before.

Georg, is qemu running with root user privileges?

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Title:
  No write access in a 9p/virtfs shared folder

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[Bug 965867] Re: 9p virtual file system on qemu slow

2012-04-25 Thread M. Mohan Kumar
Hi Max,

Could you try passing msize=262144 for 9p mount point and post the
results?

Host:
[root@llm116 media]# ls -lhas file
1.1G -rw-r--r-- 1 root root 1.0G Apr 26 11:05 file

[root@llm116 media]# dd if=/dev/zero of=file bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 0.700828 s, 1.5 GB/s

[root@llm116 media]# time cp file file2

real0m6.353s
user0m0.007s
sys 0m1.520s

VM:

[root@qemu-img-64 pass]# time cp file 9p_file

real0m12.261s
user0m0.154s
sys 0m2.582s

[root@qemu-img-64 pass]# dd if=/dev/zero of=file.9 bs=1M count=1024
1024+0 records in
1024+0 records out
1073741824 bytes (1.1 GB) copied, 2.07335 s, 518 MB/s

[root@qemu-img-64 pass]# mount
[snip]
v_pass on /pass type 9p (rw,trans=virtio,version=9p2000.L,msize=262144)
[/snip]

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Title:
  9p virtual file system on qemu slow

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