I see to be having a problem with the SCSI disk that I'm trying to install. The computer that it is attached to was Win XP and SCSI worked fine. When we changed the computer over to Fedora 10, SCSI was being read by the computer but is not accessible.
View 5 RepliesThe system is fc12 with a scsi pci card. There are 4 disks on the scsi chain, properly terminated. At boot time the system does not recognize the 4th drive. It creates a /dev/sdh entry, but the individual partition entries are not created. fdisk /w creates the /dev/sdh* partition entries. After that the drive is recognized by the system.
Is there record of the device scan activity? What could cause the boot process to identify the drive but stop short of identifying the partitions.
dmesg output seem normal
scsi3 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 7.0
<Adaptec (Compaq OEM) 29160 Ultra160 SCSI adapter>
aic7892: Ultra160 Wide Channel A, SCSI Id=7, 32/253 SCBs
scsi: waiting for bus probes to complete ...
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I am trying to mount a a Magneto Optical WORM drive, mechanically it is a 2.6 Gb, 1024 Bytes/Sector, 5.25", Verbatim Media, The disk was created under OS-2.
I am using CentOS 5, and have tried mounting the disk as msdos and as vfat and get superblock errors among others.
what filesystem type did OS-2 use? is there an add on to CentOS that will support the filesystem?
I am developing for a Linux based device for which the HOT PLUG option is deactivated. As part of optimizing the code, we also don't want to create device files for unused devices. We understand that both USB attached and fixec SCSI hard disks would create device files like /dev/sda,/dev/sda1 /dev/sdb, /dev/sdb1 etc. Is this understanding correct?
In the case of USB attached SCSI devices, would driver create this device file entry? How is it created? Can somebody please tell me how it is being created automatically. In case I attach a fixed SCSI hard disk before boot up(and create device file /dev/sda1), would USB SCSI device driver create device files starting from /dev/sdb, automatically.
I have three disk in my system. One SATA (250GB) and two SCSI (73GB) disks. The Two SCSI disks were installed originally and RHEL3 is installed on it. The SATA disk is installed a few years later with RHEL5. As you can see below, the boot sector is still on one of the SCSI disks (sdb1).
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/sda1 236545184 15259760 209075624 7% /
/dev/sdc2 68539636 4578792 60479160 8% /users
/dev/sdb1 101089 26847 69023 29% /boot
/dev/sdb3 68437272 36963704 27997104 57% /RHEL3U7
tmpfs 2025916 652 2025264 1% /dev/shm
How I can move the boot sector from the SCSI disk (sdb) to the SATA disk (sda) without losing data and without re-installation?
Suppose during a script execution I am attaching one or two new disk having different vendor id to host machine, how do I know which disk corresponds to which file in /dev/ directory? i just want to perform some operation on those device from some script, how will i know which file in /dev directory correspond to which disk(having same size but different vendor id).
View 1 Replies View RelatedSo I have a system that is about 6 years old running Redhat 7.2 that is supporting a very old app that cannot be replaced at the moment. The jbod has 7 Raid1 arrays in it, 6 of which are for database storage and another for the OS storage. We've recently run into some bad slowdowns and drive failures causing nearly a week in downtime. Apparently none of the people involved, including the so-called hardware experts could really shed any light on the matter. Out of curiosity I ran iostat one day for a while and saw numbers similar to below:
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Some of these kinda weird me out, especially the disk utilization and the corresponding low data transfer. I'm not a disk IO expert so if there are any gurus out there willing to help explain what it is I'm seeing here. As a side note, the system is back up and running it just runs sluggish and neither the database folks nor the hardware guys can make heads or tails of it. Ive sent them the same graphs from iostat but so far no response.
i m facing same error in most of the HCL servers. the problem is that it throws error while booting and sometimes not throws error. the error is :-
Feb 13 13:17:25 fe13s kernel: Adapter 0: Bus A: The SCSI controller was reset due to SCSI BUS noise or an invalid signal. Check cables, termination, termpower, LVDS operation, etc.
Feb 13 13:17:30 fe13s kernel: Adapter 0: Bus B: The SCSI controller successfully recovered from a SCSI BUS issue. The issue may still be present on the BUS. Check cables, termination, termpower, LVDS operation, etc
Feb 13 13:29:15 fe13s kernel: Adapter 0: Bus B: The SCSI controller successfully recovered from a SCSI BUS issue. The issue may still be present on the BUS. Check cables, termination, termpower, LVDS operation, etc
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In my understanding, the way /proc/scsi/scsi gets populated, /proc/paritions also gets populated in the same fashion. i.e. the description for first entry of /proc/scsi/scsi can be seen in the first entry of /proc/partitions and same for rest.
So, With this assumption, in my project, I used to relate first entry of /proc/scsi/scsi with first entry of /proc/partitions to get its total size and same for all entries.
But, I observed some differences in following scenario, where
1) The first 4 entries in /proc/scsi/scsi are SAN luns attached to my system and for which the actual device names in /dev/ are sda,sdb,sdc and sdd.
2) The last 4 entries are the internal HDDs on same system. In /dev/, their respective device names are sde,sdf,sdg & sdh.
(Output attached at end of the thread)
But in /proc/partitions, the device order is different.
You can see their respective sizes in /proc/partition output as well.
So, my question is, in this particular scenario, I can't relate the first entry of /proc/scsi/scsi with first entry of /proc/partition. i.e. scsi0:00:00:00 is not /dev/sde, because it is actually /dev/sda.
It seems that my assumption is wrong in this scenario.
Is there any way or mechanism to figure out actual device name for an entry in /proc/scsi/scsi in /dev/ directory?
How can my application should relate /proc/scsi/scsi entries with their respective device names and sizes?
When I enter "cat /proc/scsi/scsi" I'm returned with "cat: /proc/scsi/scsi: No such file or directory". I've tried this on two different installs on two different machines.
View 6 Replies View RelatedSome of our workstations have LTO's attached and they seem to drop off every now and again, the only thing which picks them up again (besides a reboot) is the famous rescan-scsi-bus script from here
The thing is that I'd like non-root users to be able to run this script, which in turn needs root to /proc/scsi/scsi
Trying to boot Ubuntu live CD 10.04 and getting some problems. I will get to the section where I have to pick a language and then choose the option to run from the CD. It will start to load and then it will hang up at "[sdb] attached scsi removable disk". I unplugged all of my external HD's. I burned the 32 bit version because it was recommended on the site.
Asus
Pentium Dual core CPU E5400 @ 2.70 GHz
5 Gigs of RAM
Current clock speed 2700MHz
Running Windows 7
Every other time my system comes out of hibernation, I see the blue Fedora screen loading like the computer is powering back on, and all of the sudden the screen goes blank, as if it shut itself back off. The funny thing is the power button is still on, but there is no display. Has anyone heard of this issue before. I'm not sure what to try to get it fixed
View 1 Replies View RelatedWhere abouts in Ubuntu can you display the name of the computer and is it posible to change it.
View 2 Replies View RelatedI have a Samsung B2030 Monitor whose resolution is 1900x1200 but after installation of UBUNTU 11.04 it shows only 1024x768.If the person wants a remote access to the system - I can allow that as well but he will have to tell me the info step by step as I am a novice and new to ubuntu.
View 3 Replies View RelatedI applied Power Management settings to put my computer to sleep in the hope that it would only sleep when it wasn't downloading something in Deluge. Unfortunately it would seem that it puts the computer to sleep despite Deluge being active. No biggie I thought, I'll just disable the sleep settings my setting them both back to NEVER. However, it ignores my new settings and still puts the display / computer to sleep, at the exact times I set originally!
View 7 Replies View RelatedThis started happening about 1 hour ago. My computer display just went black, and the power light never changed state. I turned off it's power, and then back on (after a few seconds), and the power light came on "blue", which is what it's supposed to be, but i got nothing on the display, and hitting the menu buttons did not show a menu for the display, or any kind of response. i rebooted a couple of times, to no avail.
I thought my new display just crapped out, so i took it to another computer (windows xp laptop) and plugged in the vga cable (my server uses DVI), and it was fine. I took it to another computer (windows 7) with a DVI cable, and it was fine. I brought it back to my desktop/server, and plugged it back in, and it was fine again. Menu buttons and all.
Then, a few minutes later, it went out again. I turned the power for it off for a few minutes, then back on, and it came on with weird scanlines of various colors... then went back to black.
I played with unplugging the dvi cable in the back of the monitor/display, and wiggling it, and then at the computer connection, and at some point it came back on, for no obvious reason (i think i already stopped playing with it).
xorg.log was uneventful, but i can post it, if need be.
Dmesg shows this (the very last line of the NEXT post was the only one of any interest; but googling it returned no scenarious involving display crashes):
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[ 15.615437] dracut: Switching root
[ 17.529852] udev[521]: starting version 161
[ 18.991277] ATK0110 ATK0110:00: EC enabled
[ 18.994541] EDAC MC: Ver: 2.1.0 Feb 7 2011
[ 19.044674] microcode: CPU0: patch_level=0x10000bf
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I think someone has been in my apartment when I'm at work and attempted to login to my computer.
Rather than searching through all the logs, is there any way for Conky to display the last 2 or 3 login attempts?
how do you create a webscript to display the diskspace on a computer on fedora?
View 2 Replies View RelatedI have 3 little pieces of hardware called Xcore.
They are very stripped down computers with minimal configuration : 1Ghz CPU, 1GB RAM, 1 SD Card (and usual USB/VGA ports).
Everything runs fine out of the box with Debian 7.2
Linux debian 3.2.0-4-486 #1 Debian 3.2.51-1 i586 GNU/Linux
I recently install Ubuntu-studio Desktop and some other packages. And, I upgraded my System. But since then, the Grub has started to display (I have only 9.10 installed, using the entire Disk). Also, unless I select the entry, Grub does not automatically start. The startup takes nearly 1.5 minutes. And, the Login screen, after the installation of Ubuntu Studio GDM, is much slower. I removed the Ubuntu-studio GDM package, still it takes about 20 seconds to allow me to enter Username and password. Any idea?
View 2 Replies View Relatedubuntu actually not using so muchi want to know to display icons on desktop of my computer, network ,bin and other as in windows
View 2 Replies View Relatedi found ubuntu 904 can work on my old computer machine with a built in ati display card.updating as it return a message saying that the repository may not be available..
View 4 Replies View RelatedI have installed Ubuntu on my MSI Mega PC but have no sound, also the display on the front of the computer doens't work. Unsure if there are drivers for this but here goes:
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I just downloaded Open SuSE Linux 11.4 and installing it on a Vaio 2.8ghz Computer. While loading everything went well, but when I loged backon my Monitor Flashes about every 20 seconds, just for about 3 seconds. I am using a GForce 2200 Video card.What I need to know is their anyone who can tell me why this is happeining and how to fix it. I have used Open SuSE 10.3 on another machine and have never had this problem.
View 1 Replies View RelatedI have a rather odd problem with a machine. Up until the user logs in everything is fine, but as soon as they log in the display breaks up rendering the computer unusable. Booting from CD is ok, but the monitor is not detected.
View 4 Replies View RelatedAs a newbie I am trying to use kbuntu 9.04 on my AMD64 computer with built in Nvidia 7050 display. I can only get 640x480 or 800x600 screen resolution that does not suit my 22" Supermatch monitor. I have tried numerous xrandr instructions but cannot make any progress please help in simple language.
View 1 Replies View Relatedhaving trouble setting up a dual monitor from my Dell xps laptop using an HDMI port. It dual boots onto Ubuntu 10.04. The computer has a Nvidia GeForce GT 555M with Optimus graphics card I need to make sure I have not installed the restricted drivers. So I think what is happening right now is that the graphics are shown off the integrated graphics card. This is my output from <lspci | grep VGA>
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00:02.0 VGA compatible controller: Intel Corporation Device 0126 (rev 09)
01:00.0 VGA compatible controller: nVidia Corporation Device 0dcd (rev a1)
The forum recommends to use this program called Bumblebee but I have had some issues with that in the past. Is there somehow I can setup my dual display while staying on Ubuntu 10.04 and not installing Bumblebee? I have researched into setting up dual display walkthroughs before but they all concentrate on nvidia or ATI configurations.
My Lpatop has a 300G hard drive. It came, as many do pre-installed with a Window OS, in this case Vista 32-bit Home Prem. I had partitioned the hard drive to give a C drive of 97.7GB (Partition 2 /dev/sda 2/Host), a partition for applications and programs, D of 48.8GB (Partition 3 /dev/sda3) and a third partition, E for Documents, etc. of 148GB (Partition 5 /dev/sda 5 media/doc), which on scanning seems to be a sub set of a partition Partition 4 W95 Ext d LBA dev/sda 4.......There is another partition, Partition 1 /dev/sda1 and is called WinRE and is of 2.80GB.All are NTFS except for the Partition 4Windows works fine and I have no problems, but when I use Ubuntu I get errors on startup. In the first instance it will not install the latest Kernal and it gives a Battery Management error in GNOME. I get Storage warning messages all the time, which I believe is the cause of the problems. See enclosed.
I am assuming that the disk space issue is in Host and or Home. Other than all the operational data and applications I do NOT use the Ubuntu filing system, rather the Partition 5 which I created solely for this purpose, so it's not a case of deleting files, it is purely how Ubuntu created itself on install and its operational requirements.The problem is resulting in no space or ability to do updates and new installs, and Kernal and Gnome issues.
I have a desktop which has 10.04 loaded. There are apparently some errors as some of the menu items didn't load correctly, and after a while, it freezes showing a pink and purple screen with vertical lines. This is not a dual-boot setup. I have a new 10.04 disk which I have tried to boot from to simply over write it with a fresh install but the computer will not boot from the disk.
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