This is starting.

Brooke Storm
Staff SRE
Wikimedia Cloud Services
[email protected]



> On Jun 30, 2021, at 9:34 AM, Brooke Storm <[email protected]> wrote:
> 
> The NFS servers used for scratch and maps mounts (/data/project and /home in 
> the maps project and /data/scratch in other projects) will be going offline 
> for a short time tomorrow 2021-07-01 at around 1600 UTC to move the mounts to 
> DRBD synced volumes.  The current setup causes odd issues during failover 
> including data loss and stale files left behind. The process taking place is 
> one of those failovers so there may be some files that were previously 
> deleted that need deleting again present and similar anomalies. 
> 
> I plan to reboot the maps project servers to make sure they have their mounts 
> and processes restored as best as possible. The scratch mounts should be less 
> impactful. If you use scratch, just be aware that it will go offline for a 
> bit and will be back with some possible quirks.  After that, the data should 
> become far more stable and properly synced between the two systems. The 
> process could start later than 1600 UTC if there are sync issues initially as 
> I try to get as much of the data as possible transferred.
> 
> More details here https://phabricator.wikimedia.org/T224747 
> <https://phabricator.wikimedia.org/T224747> 
> 
> 
> Brooke Storm
> Staff SRE
> Wikimedia Cloud Services
> [email protected] <mailto:[email protected]>
> 
> 
> 

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