Archive for April, 2012

How to remove the last dead path in ESX

Feb 9 10:56:27 esx vmkernel: 47:18:55:03.308 cpu8:4225)WARNING: NMP: nmp_DeviceRetryCommand: Device “naa.60060e80056e030000006e030000004b”: awaiting fast path state update for failover with I/O blocked. No prior reservation exists on the device. Feb 9 10:56:27 esx vmkernel: 47:18:55:03.308 cpu8:4225)WARNING: NMP: nmp_DeviceStartLoop: NMP Device “naa.60060e80056e030000006e030000004b” is blocked. Not starting I/O from device. Feb 9 10:56:28 esx vmkernel: 47:18:55:04.323 cpu8:4264)WARNING: NMP: […]

Posted on April 12, 2012 at 11:59 pm by sergeyt · Permalink · Leave a comment
In: Linux, SAN

Linux solution for ARP flux

If for some reason you have to configure multiple network interfaces in the same subnet, e.g. eth0 – 192.168.1.1/24, eth1 – 192.168.1.2/24, eth2 – 192.168.1.3/24, etc., on Linux box you’d certainly face a so called ARP flux issue. To fix it (I assume you have kernel > 2.6.2) just set the following sysctl options as […]

Posted on April 12, 2012 at 11:49 pm by sergeyt · Permalink · Leave a comment
In: Linux