• Fixing Bad Drive Sectors on Linux

    by  • 2014/07/08 • 0 Comments

    There’s some weird thing with modern SATA drives where they will fail a sector on read, but do the proper rewriting when asked to, and SMART still reports a perfectly healthy drive after the rewriting.  Conventional wisdom is that such a situation means that all spare sectors on a track have been used up,...

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    Using Pepper FlashPlayer on Fedora

    by  • 2014/06/21 • 0 Comments

    Just a quick post (not a HOWTO yet – feel free to contribute) on how to use the pepper version of Flash Player plugin on Fedora chromium (using Spot’s chromium-stable repo more than likely).  NSAPI has been abandoned in the current version of Chromium in spot’s repo.  I wanted to stream a YouTube video...

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    The Case of the Mysterious Linker

    by  • 2014/01/13 • 0 Comments

    On a few of my Fedora 19 machines, I’ve had odd linker problems. Apps that used to work, like k3b’s ripper, Audacity, etc. would fail to run with a linker error, such as: audacity: error while loading shared libraries: libopenjpeg.so.3: cannot open shared object file: No such file or directory I checked the packages,...

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    Dynamic Range Compression for PulseAudio

    by  • 2013/09/05 • 5 Comments

    OK, so I did a good thing (got a working dynamic range compression going for PulseAudio) then I did a bad thing (forgot where I put the source).  As a side-effect of rebuilding a machine here, I found it!  So, to make amends, I packaged it up nicely and I’ll try to make a...

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    Informed Disclosure

    by  • 2013/05/30 • 0 Comments

    originally posted elsewhere 2012.08.17. The Full Disclosure folks say that vulnerabilities should be disclose immediately. Their arguments have some merits. The Responsible Disclosure folks say that the vendor should have n number of weeks to get a patch out, then it goes to Full Disclosure. That has some merits as well, but the trouble...

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    vsftpd Configuration for TLS and Passive Mode

    by  • 2012/11/27 • 0 Comments

    The vsftpd standard FTP daemon on Fedora 17 comes configured to not work.  It doesn’t work in normal mode (chroot problems) it doesn’t handle TLS, it allows anonymous by default, and it doesn’t handle passive mode in a way that works with the iptables firewall (because of TLS). Goal: TLS, no chroot-ing, no anonymous,Passive...

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    NFS Server Stopped Working After Fedora 17 Upgrade

    by  • 2012/09/19 • 0 Comments

    Problem: You’ve just upgraded to Fedora 17 (or perhaps 16) on your NFS server. Nothing is listening on port 2049 and rpc.idmapd isn’t running. You’ve already made sure nfs-server.service is running. Solution: your old /etc/sysconfig/nfs file is messing up the NFS server. rpc.idmapd is no longer needed. (man nfsidmap). Run: mv /etc/sysconfig/nfs /etc/sysconfig/nfs.rpmsave mv...

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    Zero a GPT Label Using dd

    by  • 2011/12/15 • 9 Comments

    When re-using a disk with a GPT label (GUID Partition Table) it’s important to wipe the label stored on both the first and last blocks of the device. With an MBR Partition Table it was easy enough to just nuke the beginning of the drive (adapt sdz for your drive), ala: dd if=/dev/zero of=/dev/sdz...

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    Expanding a ZFS filesystem on LUKS/md-raid

    by  • 2011/08/31 • 0 Comments

    I run my backups on a stack that consists of: md-raid mirror LUKS encryption ZFS zvol This works nicely as it’s easy to split off an encrypted backup disk to take offsite, but since ZFS encryption hasn’t come to Linux yet, it’s still a stack of technologies to manage.  My backup set gets ever...

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    Fedora 15 on an AMD Lynx (Llano) A6-3650

    by  • 2011/07/18

    I’ve been working for a couple days to get a usable Fedora 15 instance on the AMD A6-3650 APU. I’m using MSI’s motherboard. The biggest challenge is the integrated ATI HD 6550D graphics. Download the latest .fc16 build of Linux 3.0 from koji for proper KMS (kernel mode setting) support. Then download the latest...

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