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Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. More about the dm-nfs kernel module, courtesy of Lenz Grimmer. If you want to work with block-based shared storage devices such as ocfs2, but you don't have iSCSI or SAN storage, you can use NFS, instead. Just create an NFS file that will contain the block-based shared storage device. In fact, you can create several shared storage devices that way. And use the "dm nfs" utility to create a device map. Lenz Grimmer expands on Wim's original blog.
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. We liked this blog so much when Jeff Victor first posted it, that we turned it into a bonafide OTN tech article. You might recognize it. It's about ZOSS: zones on shared storage. Why? When you configure a zone on shared storage, you can quickly clone it on any server that uses that storage. Jeff explains how.
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. When you have one person in one phone booth, life is simple. But when you fit 25 college students into one phone booth, you have resource management challenges. Not to mention security risks. Same goes for virtualization. Detlef explains how resource management can help.
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. Scientist Jake Vanderplas explains that it’s been just over four years since the introduction of Python 3, and there are still about as many opinions on it as there are Python users. An interesting discussion about breaking backwards compatibility.
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. Wim explains how to set up a global heartbeat on your site with OCFS2. In case you don't know, a heartbeat is how one file system lets others file systems know it is alive. When you have lots of devices sending each other heartbeats, the overhead becomes a problem. A global heartbeat in essence lets several devices share a single "beat."
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. Loadable kernel modules are cool because they let you add code to a running Linux kernel. But how do you know the code you add won't make your kernel a client of the Death Star? You don't. Unless you use signed kernel modules. Robert Chase explains how.
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. If you want to work with block-based shared storage devices such as ocfs2. But you don't have iSCSI or SAN storage. You can use NFS, instead. Yes, you can create an NFS file that will contain the block-based shared storage device. In fact, you can create several shared storage devices that way. And use the "dm nfs" utility to create a device map. Wim explains how.
Submitted by MCA Admin 1 on 11 January, 2013 - 07:50
MCA Tips Feed. If you run out of space in your VirtualBox image, use the VBoxManage command to make it bigger, and tell the host OS partition that it has more space to use. The Fat Bloke explains how.
Submitted by MCA Admin 1 on 11 January, 2013 - 01:50
MCA Tips Feed. We liked this blog so much when Jeff Victor first posted it, that we turned it into a bonafide OTN tech article. You might recognize it. It's about ZOSS: zones on shared storage. Why? When you configure a zone on shared storage, you can quickly clone it on any server that uses that storage. Jeff explains how.
Submitted by MCA Admin 1 on 10 January, 2013 - 00:50
MCA Tips Feed. Scientist Jake Vanderplas explains that it’s been just over four years since the introduction of Python 3, and there are still about as many opinions on it as there are Python users. An interesting discussion about breaking backwards compatibility.
