Archive for the ‘SAN’ Category
Expanding ZFS rpool in Solaris 10
I was really bad at googling the steps to grow ZFS rpool online without using zpool append, so here is my little story how I’ve done it. Before I begin, please, note that everything said below applies only to the configurations where rpool consumes a whole disk. If there is another partition sitting right after […]
In: SAN, Solaris, ZFS
How to create new thin devices using symcli and add them to a masking view and a storage group
Below are the steps that I used recently to create and present a few thin devices. More precisely: Boot disk – 50GB Two TDEVs 150GB each. One for data and the other for logs. Create a nested initiator group: symaccess -sid VMAX-SID create -name IG_SERVERNAME_HBA0 -type initiator -consistent_lun symaccess -sid VMAX-SID -name IG_SERVERNAME_HBA0 -type initiator […]
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: […]
Enable CIM server on MDS Cisco switch
Want to add your shiny MDS Cisco switch into HTnM (Hitachi Tuning Manager) – that’s very easy. All you have to do is to enable cim, preferably secure cim server, and configure agtw (SAN agent) using HTnM cli. How I did it… ssh into a switch to configure CIM server. First I copied SSL certificate […]
Hi-Track read timed out
Trying to investigate a nasty problem. Every day during seemingly the same hours, i.e. from 4 to 8 a.m., Hitrack reports that one of the controllers in the array it monitors is not responding. During the second consecutive check the problem resolves and the array stays healthy for the rest of the day. Next day […]
Brocade and Qlogic (SANbox2) switches in one fabric
Below is a quick guide about how to merge Brocade and Qlogic (SANbox2) switches together. I understand, that a more intellegent approach would be to stay away from mixing different vendors in a SAN environment but at times we live with what we’ve been given. As always in our life, there is a trade-off one […]