Posts Tagged ‘linux’


Ubuntu thought the disk was a sound card?

28 June 2008 – 14:35 CST

Had some problems with my Ubuntu server at home which I wasn’t able to resolve – something with the BIOS settings getting lost when the power went out rearranging the disks in such a way that the box wouldn’t boot. There was more to it than that, but after a few hours of diagnostics and getting nowhere I just decided to reinstall the OS. I wanted to upgrade from 6.x to 8.04 anyways.

Everything seemed to be fine, until I powered down the box last night to put it behind a UPS. I first noticed the problem when I logged in remotely and it couldn’t cd into my /home directory, which is on a separate physical disk than the OS. First off, I’m not entirely sure why, but Ubuntu is treating the IDE disk as a scsi device. I don’t think this is a problem per-se, but seems strange.

tinman kernel: scsi 2:0:0:0: Direct-Access     ATA      ST3320620A       3.AA PQ: 0 ANSI: 5
tinman kernel: sd 2:0:0:0: [sdb] 625142448 512-byte hardware sectors (320073 MB)
tinman kernel: sd 2:0:0:0: [sdb] Write Protect is off
tinman kernel: sd 2:0:0:0: [sdb] Write cache: enabled, read cache: enabled, doesn't
support DPO or FUA

The problem is the next line of the log

Jun 27 21:48:31 tinman kernel: [   39.495985]
sdb:<6>input: PC Speaker as /devices/platform/pcspkr/input/input4

So not only is the PATA drive a SCSI device, but now it is a sound device as well? Being detected as a sound device, I believe is what caused the filesystem to appear corrupt, but there were no complaints when the disk was mounted

tinman kernel: [   83.035617] EXT3 FS on sdb2, internal journal
tinman kernel: [   83.035621] EXT3-fs: mounted filesystem with ordered data mode.

The complaints started later trying to read the disk

tinman kernel: [  157.659996] attempt to access beyond end of device
tinman kernel: [  157.660003] sdb2: rw=32, want=37486616, limit=530082
tinman kernel: [  157.664594] attempt to access beyond end of device

Because it is sdb, and wasn’t able to set me up in /home anyways when I logged in, I was able to unmount the disk. I ran e2fsck which said it was clean, so I remounted the partition and everything went normally. It seems fine now, but it is a bit puzzling why the OS decided that the disk looked like a sound device and half-treated it as such? Starting to wonder if there isn’t something wrong hardware wise, either with the disk itself or with the controller.

Ubuntu 7.04 + VMWare server

13 July 2007 – 10:18 CST

VMWare 1.0.3′s kernel module won’t compile with kernel 2.6.20 without help

http://www.vmware.com/community/thread.jspa?threadID=65982&tstart=30

The trick is this, courtesy of wilbur.harvey:

tried this for my Ubuntu Feisty 2.6.20-2-lowlatency kernel and it seems to work fine. I just commented out the

static inline _syscall1(int, compat_exit, int, exit_code);

statement.

You have to change the file /usr/lib/vmware/modules/source/vmmon.tar to rw, then extract the file vmmon-only/include/compat_kernel.h, edit it and then put it back in the vmmon.tar file, then run vmware-config.pl

Strange ways to start the morning

15 June 2007 – 08:38 CST

Unhandled Exception: System.DllNotFoundException: libsexy

$ apt-cache search sexy

$ sudo apt-get install libsexy-dev libsexy2

Encrypted files

28 April 2007 – 12:58 CST

Here’s a hint: if you’re going to use the windows “encrypt” on your files, and then later try to copy them by reading the NTFS partition in linux, don’t delete the original files (or wipe the original disk) until you’ve removed the encryption — because the files won’t copy.

The NTFS driver for linux doesn’t know what to do with the encrypted files, so it just creates a zero-byte entry at the destination when copying the file. Fortunately, I didn’t wipe the disk with the originals, but the other day I almost did before I got distracted by something else. Yikes.