Referrer spam (200912-01)

2009-12-23

Recently I’ve been noticing a referrer spammer targeting my sites from the IP address 94.102.63.60. Trying to promote aimtrust and theinvestblog. …more

mkfs.ext3: Wrong medium type while trying to determine filesystem size

2009-12-23

Problem While going through a DRBD howto a coworker made, I came across the following problem. On a freshly created DRBD block device, mkfs bails out with the following message: mkfs.ext3 /dev/drbd0 mke2fs 1.39 (29-May-2006) mkfs.ext3: Wrong medium type while trying to determine filesystem size …more

Optimizing Wordpress and Apache for Speed

2009-12-21

Since last November I’ve been busy getting my website noticed by search engines. All the extra modules and tweaking resulted in an indexable, yet slow-loading website. Not a fun thought if you consider it all looks pretty simple. Google’s Webmaster Tools notified me that my site was steadily getting slower and slower. …more

Enabling jumbo frames

2009-12-21

Jumbo frames are what you need on a dedicated storage (NFS, iSCSI, DRBD) network. Since the packets are bigger, fewer packets are needed to send the same data. This results in faster transfers and less CPU overhead on both the transmitting and receiving ends. All in all, a good recipe for better performance. …more

Manipulating swap space with ZFS

2009-12-18

Let’s assume your OpenSolaris workstation doesn’t have enough swap space configured. In the old pre-ZFS days this was solvable by creating a swap file using mkfile(1M). With ZFS, things are a bit different: the resulting files aren’t usable as swap space anymore. …more