Reading through my RSS feeds, I came across the following blog post describing one Linux administrator using tune2fs to disable the “please run fsck on this file system after X days or Y mounts.” I’ve got to admit, this is kind of annoying. I’ve taken production critical Linux boxes down for some maintenance, only to [...]
I attempted to grow an existing RAID6 MD device this week, and ran into the following error when I performed the grow operation: $ mdadm –grow –raid-devices=5 –backup-file=/tmp/mdadmgrow.tmp /dev/md0 mdadm: Need to backup 384K of critical section.. mdadm: Cannot set device size/shape for /dev/md0: Invalid argument It appears the ability to grow a RAID6 device [...]
I came across the Linux tape library project website the other night, and this looks like a sweet project. If we could combine this solution with ZFS, the combination would be truly incredible! I need to install the LVTL software in my lab and give it a spin!
I ran into an issue last week where two nodes using shared storage lost the partition table on one of the storage devices they were accessing. This was extremely evident in the output from fdisk: $ fdisk -l /dev/sdb Disk /dev/sdb: 107.3 GB, 107374182400 bytes 255 heads, 63 sectors/track, 13054 cylinders Units = cylinders of [...]
One of my production vSphere virtual machines came close to running out of space this past week. Expanding guest storage with vSphere is a breeze, and I wanted to jot down my notes in this blog post. To expand the size of a virtual disk, you will need to open the virtual infrastructure client, right [...]
I currently support a number of Linux hosts that run inside VMWare vSphere server. Periodically I need to add new storage devices to these hosts, which requires me to login to the vSphere client and add the device through the “edit settings” selection. The cool thing about vSphere is that the LUNs are dynamically added [...]
