Table of Contents Zpool Administration Install ZFS on Debian GNU/Linux VDEVs RAIDZ The ZFS Intent Log (ZIL) The Adjustable Replacement Cache (ARC) Exporting and Importing Storage Pools Scrub and Resilver Getting and Setting Properties Best Practices and Caveats ZFS Administration Copy-on-write Creating Filesystems Compression and Deduplication Snapshots and Clones Sending and Receiving Filesystems ZVOLs iSCSI, […]
Table of Contents Zpool Administration Install ZFS on Debian GNU/Linux VDEVs RAIDZ The ZFS Intent Log (ZIL) The Adjustable Replacement Cache (ARC) Exporting and Importing Storage Pools Scrub and Resilver Getting and Setting Properties Best Practices and Caveats ZFS Administration Copy-on-write Creating Filesystems Compression and Deduplication Snapshots and Clones Sending and Receiving Filesystems ZVOLs iSCSI, […]
Table of Contents Zpool Administration Install ZFS on Debian GNU/Linux VDEVs RAIDZ The ZFS Intent Log (ZIL) The Adjustable Replacement Cache (ARC) Exporting and Importing Storage Pools Scrub and Resilver Getting and Setting Properties Best Practices and Caveats ZFS Administration Copy-on-write Creating Filesystems Compression and Deduplication Snapshots and Clones Sending and Receiving Filesystems ZVOLs iSCSI, […]
Table of Contents Zpool Administration Install ZFS on Debian GNU/Linux VDEVs RAIDZ The ZFS Intent Log (ZIL) The Adjustable Replacement Cache (ARC) Exporting and Importing Storage Pools Scrub and Resilver Getting and Setting Properties Best Practices and Caveats ZFS Administration Copy-on-write Creating Filesystems Compression and Deduplication Snapshots and Clones Sending and Receiving Filesystems ZVOLs iSCSI, […]
Table of Contents Zpool Administration Install ZFS on Debian GNU/Linux VDEVs RAIDZ The ZFS Intent Log (ZIL) The Adjustable Replacement Cache (ARC) Exporting and Importing Storage Pools Scrub and Resilver Getting and Setting Properties Best Practices and Caveats ZFS Administration Copy-on-write Creating Filesystems Compression and Deduplication Snapshots and Clones Sending and Receiving Filesystems ZVOLs iSCSI, […]
I just setup an SSD ZFS Intent Log, and the performance improvements have been massive. So much so, I need to blog about it. But first, I need to give you some background. I’m running a 2-node KVM hypervisor cluster replicating the VM images over GlusterFS (eventually over RDMA on a DDR InfiniBand link). One […]
I’ve been in the UNIX and GNU/Linux world since 1999. Back then, hard drives were barely passing double digits in GB, and RAM was PC100 speed at roughly 128 MB max. In fact, it wasn’t uncommon for most systems to have 32 MB of RAM with an 8 GB hard drive. And we ran GNOME, […]
I noticed that on my machine, my entropy was staying high, then falling off. Then, at what appeared to be some arbitrary point, it would fill back up, in a very periodic manner. This is, of course, after running haveged in the background. Curious, I started looking into it. It took a while to find. […]
I figured I would throw up a quick post about what I’m doing with my IRC client, and how it’s turned into the de-facto messaging hub for just about everything in my online life. If it could handle SMTP/IMAP and RSS, it would be a done deal. My main client is WeeChat. It connects to […]
I recently built two servers that I plan on using for a sandbox with various technologies (Infiniband, ZFS, RDMA, GlusterFS, Btrfs, Ceph, LXC, KVM, etc, etc, etc). So, getting everything installed and running, I ran into a rather interesting bug. I installed KVM and libvirt, and started rolling out some virtual machines. I wanted to […]
I always use the “-R” or “–without-recommends”, and this is why: root@yin:~# aptitude install virtinst The following NEW packages will be installed: acl{a} colord{a} consolekit{a} dconf-gsettings-backend{a} dconf-service{a} fontconfig{a} fontconfig-config{a} hicolor-icon-theme{a} libatk1.0-0{a} libatk1.0-data{a} libcairo-gobject2{a} libcairo2{a} libck-connector0{a} libcolord1{a} libcups2{a} libdatrie1{a} libdbus-glib-1-2{a} libdconf0{a} libdrm-intel1{a} libdrm-nouveau1a{a} libdrm-radeon1{a} libdrm2{a} libexif12{a} libfdt1{a} libfile-copy-recursive-perl{a} libfontconfig1{a} libgd2-xpm{a} libgdk-pixbuf2.0-0{a} libgdk-pixbuf2.0-common{a} libgl1-mesa-dri{a} libgl1-mesa-glx{a} libglapi-mesa{a} libgphoto2-2{a} […]
Table of Contents Zpool Administration Install ZFS on Debian GNU/Linux VDEVs RAIDZ The ZFS Intent Log (ZIL) The Adjustable Replacement Cache (ARC) Exporting and Importing Storage Pools Scrub and Resilver Getting and Setting Properties Best Practices and Caveats ZFS Administration Copy-on-write Creating Filesystems Compression and Deduplication Snapshots and Clones Sending and Receiving Filesystems ZVOLs iSCSI, […]
Just recently, I needed to mount a KVM raw image file, because it was depending on a network mount that was no longer accessible, and any attempts to interact with the boot process failed. So, rather than booting off a live CD, or some other medium, I decided to mount the raw image file. After […]
If you’re not using NetworkManager or Wicd, or some other similar tool to automatically manage your network interfaces for you, this post is for you. In the Debian world, you have a single file that manages your network interfaces. It can manage VLANs, bonded interfaces, virtual interfaces and more. You can establish rules on what […]
I created a Debian package for Salt, doing my best to adhere to the Debian Policy. You can find it at http://mentors.debian.net/package/salt. If you’re not familiar with Salt, head over to http://saltstack.org and check it out. From the author’s website: Salt is a powerful remote execution manager that can be used to administer servers in […]
