That upgrade guide, published here:
https://whamcloud.github.io/Online-Help/docs/Upgrade_Guide/Upgrade_EE-2.4-el6_to_LU-LTS-el7.html
Is currently the definitive guide for EE 2.4 to IML 4 upgrades.
--
Nathaniel Clark
Senior Software Engineer
Whamcloud / DDN
On 3/14/19 11:20 AM, John McCulloch
AFAIK, that is what sync=disabled does. It pretends syncs are commited.
It will flush after 5 seconds but there might be other output that will
stall it longer.
On 02/04/2019 14.28, Degremont, Aurelien wrote:
> This is very unlikely.
> The only reason that could happened is this hardware is
This is very unlikely.
The only reason that could happened is this hardware is acknowledging I/O to
Lustre that it did not really commit to disk like writeback cache, or a Lustre
bug.
Le 02/04/2019 14:11, « lustre-discuss au nom de Hans Henrik Happe »
a écrit :
Isn't there a
Isn't there a possibility that the MDS falsely tells the client that a
transaction has been committed to disk. After that the client might not
be able to replay, if the MDS dies.
Cheers,
Hans Henrik
On 19/03/2019 21.32, Andreas Dilger wrote:
> You would need to lose the MDS within a few seconds
