[dm-devel] dm-bufio

Kasatkin, Dmitry dmitry.kasatkin at intel.com
Fri Mar 23 11:26:07 UTC 2012

On Fri, Mar 23, 2012 at 1:10 PM, Zdenek Kabelac <zkabelac at redhat.com> wrote:
> Dne 23.3.2012 12:01, Kasatkin, Dmitry napsal(a):
>> Hello,
>> When using dm-bufio and dm-io in general, how to ensure that all dirty
>> buffers are written to the storage when machine reboots?
>> suspend hooks could be used, but they are not called on reboot, only
>> when suspending/removing the target...
> You mean you reboot without running  'sync' command?
> And yes - on reboot you should properly unmount devices - so you should
> see removal of target on your shutdown sequence -  I believe Fedora currently
> tries to support switch to some shutdown ramdisk, so all filesystem and
> devices might be properly unmounted and destroyed.


Thanks for response.
I use bufio to store some data on block device.
It is not mounted in anyway. My target just use it to load/store data.
When machine reboots, I want to be sure that bufio written all dirty buffers...

- Dmitry

> Zdenek

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