dko's questions

I have several mounted drives to a windows share on an ubuntu server machine.

//WindowsFileServer/Media /mnt/Media cifs credentials=/home/drew/.smbcreds,uid=1000,iocharset=utf8 0 0

//WindowsFileServer/Media2 /mnt/Media2 cifs credentials=/home/drew/.smbcreds,uid=1000,iocharset=utf8 0 0

//WindowsFileServer/Plex\040Optimized /mnt/Optimized cifs credentials=/home/drew/.smbcreds,uid=108,iocharset=utf8 0 0

After around 24 hours, I'll go to /mnt and run an ls command and the console hangs. The programs that try to access files in the mounted locations timeouts. A reboot temporarily resolves the problem.

What could possibly be causing this?

After updating to Kubuntu 11.10, my file I/O performance has slowly just gotten worse and worse. It is to the point where I'm getting 1 MB/s write/read speeds to the drive. If I download something, the whole machine becomes unresponsive for at times up to 30 seconds. This usually causes a timeout in the download and the download then stops.

Even extracting archive files, while extracting the computer is just unusable on top of the terrible read/write speeds. It isn't the drive as I have Windows installed as well and when I boot to it I have no issues with the drive.

I did not have this issue using Kubuntu 11.04 and am thinking of downgrading. However, I'd much rather help out the Ubuntu community by working through these issues. I'm starting to lean towards the new Linux Kernel is just not working well with file handles. During file I/O my system usage does pick up, but it is not 100% CPU usage. My system is as follows.

• Samsung 2 TB hard disk drive
• AMD Phenom II x6 1055
• 4 GB RAM (only one in use according to system monitor)
• ATI 5850 HD

When I scan for networks in the network manager I do not find any. I have a broadcom wireless card. My light on my laptop isn't blue and blue is the color when it is on (Yes I have the switch in the on position). Running sudo ifconfig wlan0 up I get "SIOCSIFFLAGS: No such file or directory" ifconfig -a returns (I removed some of the MAC) "

wlan0 Link encap:Ethernet  HWaddr 00:14:a5:ad:**:**  
      BROADCAST MULTICAST  MTU:1500  Metric:1
      RX packets:0 errors:0 dropped:0 overruns:0 frame:0
      TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
      collisions:0 txqueuelen:1000 
      RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

" So the driver I'm assuming is there is a driver and rfkill is the following

rfkill list
0: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
1: hp-wifi: Wireless LAN
        Soft blocked: no
        Hard blocked: no

In the Network Interfaces GUI it does not list the wlan0 though. Anyone have a clue as to what is going on. I've looked around and can't find much on this issue. I have other wireless devices finding and connecting to the router.

I'm trying to perform an update using the normal sudo apt-get update. However my main ethernet does not have access to the outside world (long story I think I purposely did this and forgot how I did it to undo it). I have another network card in there that I plug in for just to get internet. When I ping using the second network card I can ping www.google.com and with the first I can not. So after that long story, apt-get will only try to use the first network card and fail to get a reply back from the internet. I was wondering if there was a way to force apt-get to use a certain eth to retrieve updates?

I had ubuntu installed with raid 0 enabled. I have added 2 more disks went into the bios deleted and created a new raid setup using raid 10 (total of 4 disks now).

However during install of ubuntu server it asks if it should activate the RAID Sata disks, I tell it yes. Next step shows up blank for available disks when determining where to mount the root etc. Anyone have a clue as to why this would be?

I am getting very slow write speeds (<1MB) with RAID 1 and RAID 0 (striping and mirroring). The read speeds are sufficiently fast but writing is very slow. At first I thought it was just poor performance under RAID 1 but it is occuring with RAID 0 (although not as bad).

I noticed that compared to when Ubuntu was on a virtual machine there are multiple instances of kdmflush process running using most of my IO (detected using iotop).

Does anyone have any suggestions as to what could be causing this?

I'm trying to compress a directory and ftp it to a windows ftp.

I have tried every tar command I can find to compress a directory. It appears to be ok. Then I transfer it and view it's contents using Winrar. Winrar keeps telling me the file is corrupted. I have viewed other .gz or .bz2 files using winrar but for some odd reason I can't get it to work.

I would prefer just to have it zip the files so they have a .zip extension but even then when i try to browse it's contents both windows and winrar claim it's corrupt.

Does anyone else have a suggestion as to something else to try?

Is there a way to view IO stats based on process in Ubuntu. I have an ubuntu server 10.10 that every once and while will grind on the hdd's for 30 seconds, I'm trying to figure out what is causing that. Thanks in advance. All I'm running on it is mysql however it happens even when mysql is not under any load (no connections just idle).

I have an AMD SB with Raid 1 set up through that. I installed Ubuntu Server with no problems. However I know through windows one can set up SMART Tests with AMD's software. Is there a way to run SMART tests on a recurring schedule in Ubuntu and have it email failures?