Sebastian Koehler

Author's posts

VMware Tape Drive pass-through

If a tape drive comes up with VMW_SATP_ALUA rule in VMware vShpere (4.0 or later) you will most likely see input/output errors during backup operation on the VM you mapped to drive to. A working rule is VMW_SATP_LOCAL and you can change it using some simple steps. Find the module for SCSI/SAS HBA using esxcfg-scsidevs …

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WWN Converter updated

I’ve just updated the little WWN Converter utility. Feel free and give it a shot. Feedback is appreciated. This tool is updated from time to time and you will receive updates automatically. The tool provides you with the following: Convert layout and/or transform WWNs,WWLIDs as well as MAC addresses Print vendor information of indicated string …

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Changed from bblog to WordPress

As bblog was no longer actively maintained, I was forced to switch to something new. WordPress seems to be a good alternative. As it comes with some quite interesting features, you can expect to see something new here soon.

DM-MP and SVSP 3.02

Here is a working and well tested addition for your /etc/multipath.conf if you’re using RHEL4 and SVSP 3. Please keep in mind that RHEL4 does not have an ALUA hardware handler in kernel and requires the HP-EVA MS-DPM personality of the Linux host profile. device { vendor “HP” product “HSVX700” path_grouping_policy group_by_prio prio_callout “/sbin/mpath_prio_hp_sw /dev/%n” …

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