Messages in this thread | | | Date | Tue, 31 Aug 2010 10:11:34 +0200 | From | Tejun Heo <> | Subject | Re: [PATCH 26/30] ext4: do not send discards as barriers |
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On 08/30/2010 10:20 PM, Jan Kara wrote: > My setup is that I have a dedicated partition / drive for a filesystem > which is written to from a guest kernel running under KVM. I have set it up > using virtio driver with cache=writeback so that the host caches the writes > in a similar way disk caches them. At some point I just kill the qemu-kvm > process and at that point I'd like to also throw away data cached by the > host...
$ echo 1 > /sys/block/sdX/device/delete $ echo - - - > /sys/class/scsi_host/hostX/scan
should do the trick.
Thanks.
-- tejun
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