On Mon, Nov 7, 2011 at 4:38 PM, Supriya Kannery <supri...@linux.vnet.ibm.com> wrote: > On 11/04/2011 07:59 AM, Zhi Yong Wu wrote: >> >> On Sun, Oct 30, 2011 at 6:33 PM, Supriya Kannery >> <supri...@linux.vnet.ibm.com> wrote: >>> >>> Currently cache setting of a block device cannot be changed >>> without restarting a running VM. Following patchset is for >>> enabling dynamic change of cache setting for block devices >>> through qemu monitor. Code changes are based on patches >>> from Christoph Hellwig and Prerna Saxena. >>> >>> This patchset introduces >>> a. monitor command 'block_set_hostcache' using which host >>> pagecache setting for a block device can be changed >>> dynamically. >> >> I got a bit confusion. Is it used to change host pagecache setting on >> hyperviser or on guest? >> This block device said by you is for guest, right? >> > > This command is used for changing pagecache setting of > the image files in host which are acting as block devices > for guest. So what is the difference between it and cache option?
> > -thanks, Supriya > > -- Regards, Zhi Yong Wu
