Did anyone see any issues in Japan in the last hour? We've just done a test failure and have seen zero problems ^RF

September 22, 2011 11:37 am via CoTweetReplyRetweetFavorite

@vpsnet

VPS.NET

Today at around 06:30 EDT, VPS.NET engineers did a test failure at their recently launched Japan cloud and it went really well!
No downtime, no data loss, nothing. Exactly as it should work. Kudos to the VPS.NET team! I really hope that they have found the perfect solution for their SANs and that they will begin rolling-out the new technology to their other SANs soon.

Below is the output of sar, about an hour and a half after the test. The lines that indicate that something was going on (i.e. the test failure) are highlighted.

root@dev:~# sar
Linux 2.6.32-5-xen-amd64 (dev) 	09/22/2011 	_x86_64_	(3 CPU)

[...]
04:35:01 AM     CPU     %user     %nice   %system   %iowait    %steal     %idle
04:45:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
04:55:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
05:05:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
05:15:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
05:25:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
05:35:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
05:45:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
05:55:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
06:05:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
06:15:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
06:25:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
06:35:01 AM     all      0.02      0.00      0.02      0.01      0.00     99.95
06:45:01 AM     all      0.07      0.00      0.04      0.24      0.00     99.66
06:55:01 AM     all      0.07      0.00      0.03      6.35      0.00     93.55
07:05:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
07:15:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
07:25:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
07:35:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
07:45:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
07:55:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
08:05:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
08:15:01 AM     all      0.00      0.00      0.00      0.00      0.00    100.00
Average:        all      0.00      0.00      0.00      0.13      0.00     99.86

root@dev:~# uptime
 08:16:20 up 8 days,  4:35,  1 user,  load average: 0.00, 0.00, 0.00