[Openstack] [Swift] Mount options with xfs - why nobarrier recommended?
clay.gerrard at gmail.com
Tue Sep 15 07:16:30 UTC 2015
Idk about a chestnut, but there's this:
On Mon, Sep 14, 2015 at 10:18 PM, Chris Friesen <chris.friesen at windriver.com
> On 09/14/2015 08:59 PM, Mark Kirkwood wrote:
>> Sorry if this is a bit of a chestnut, but I notice that
>> $ mount -t xfs -o noatime,nodiratime,nobarrier,logbufs=8 /dev/sda1
>> in particular the 'nobarrier' is of interest here. It seems to me that
>> there should be qualifiers mentioning the disk cache setting at least
>> (i.e disabled) and perhaps the cache+battery settings for any adapter
>> card that the disk device is plugged into. Otherwise there is a risk of
>> data loss or corruption on host power loss that could take a long time
>> for the various updater, auditor processes to pick up let alone fix.
> I agree, just recommending "nobarrier" without any caveats is asking for
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