Displaying 2 results from an estimated 2 matches for "linuxonibm".
2014 Aug 11
2
Behavior of disk caching with qcow2 disks
...an NFS mountpoint
(with sync). The local filesystem sits on top of an md software RAID of SATA
HDDs.
I have read some conflicting information about which cache option is used by
default. This documentation states that cache=writethrough is the default:
http://www-01.ibm.com/support/knowledgecenter/linuxonibm/liaat/liaatbpkvmguestcache.htm?lang=en
However this SuSE documentation claims that QEMU 1.2.x and newer allows the
driver to select which cache mode, and it often defaults to cache=writeback:
https://www.suse.com/documentation/sles11/book_kvm/data/sect1_1_chapter_book_kvm.html
Which is correct? H...
2014 Aug 12
0
Re: Behavior of disk caching with qcow2 disks
...The
> local filesystem sits on top of an md software RAID of SATA HDDs.
>
> I have read some conflicting information about which cache option is
> used by default. This documentation states that cache=writethrough is
> the default:
> http://www-01.ibm.com/support/knowledgecenter/linuxonibm/liaat/liaatbpkvmguestcache.htm?lang=en
The above sounds incorrect (refer below).
> However this SuSE documentation claims that QEMU 1.2.x and newer
> allows the driver to select which cache mode, and it often defaults to
> cache=writeback:
> https://www.suse.com/documentation/sles11/b...