One “feature” of Linux systems is that ext2/ext3 filesystems can be automatically (and unexpectedly) fsck’d upon reboot. Technically, it’s done at mount time, after a configurable number of mounts or days. In theory, I suppose it makes sense to periodically check flaky filesystems running on low-end hardware. In practice, however, it frequently comes as a […]
I recently needed to shrink a primary stgpool with devclass DISK on a TSM 5.5 server in order to free up space. Since the stgpool had a device class of DISK and caching was enabled, I wasn’t able to directly shrink the stgpool by moving the data within volumes and then deleting the empty volumes. […]
This morning, I noticed that one of my TSM 6.2 servers had stopped running over night. No DB2 processes or dsmserv were running. I checked the TSM logs, but only found errors from the dsmadmc client: 08/11/11 09:08:52 ANS5216E Could not establish a TCP/IP connection with address ‘TSM1.LANIGERA.COM:1500’. The TCP/IP error is ‘Connection refused’ (errno […]
I recently had the need to enable deduplication on an existing 5.5TB storage pool residing on a TSM 6.2 server. The storage pool has a FILE (disk-based sequential access) device class, and is used to store virtual volumes from a remote 5.5 server. So, even though it is configured as a primary pool, its […]
To celebrate the release (finally!) of CentOS 6, here’s how to create a local repository and keep it up-to-date. The first step is to create the directory structure for the repository. You’ll need about 30GB of free space in the filesystem you use. Let’s assume we have a mountpoint /repo that we want to use: […]
In the first installment of this series, I discussed some of the basic concepts in using Tivoli Storage Manager for Databases to backup and recover Oracle databases. In this installment, we’ll look at how to keep TSM and Oracle in sync. When backing up a typical filespace, the TSM backup-archive (BA) client compares what files […]
Just a quick SQL script that I wrote to check for concurrent requests that failed in the past 24 hours. The script is for E-Business Suite 220.127.116.11; it may or may not work on other versions of Oracle Apps.
EMC brought their “Record Breaking Tour” through St. Louis this week. Since I’ve had little exposure to EMC storage, I thought it would be worth going to familiarize myself with their product portfolio. They did have some of their new marketing on display. There was a Mini Cooper in the lobby, and each segment of […]