I have installed an old HP Scanner on my Fedora 11 system, and it works great. The scanner is connected through a SCSI, and it gets recognized at boot time if the scanner is ON. However, if the scanner is OFF, I need to turn ON the scanner and reboot the workstation for the SCSI devise to be recognized. Is there a way that I can rescan the SCSI devise without rebooting?
View 1 RepliesSome 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
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?
I would like to scan the SAN diskspace on one of the company's RH Server. I can see that 2 Emulex Lightpulse FC has been installed before. But I am not sure whether the correct driver has been installed by the previous admin. From Emulex manual, it says I should see 2 HBA cards when I do lpfcutil LISTPATHS but I don't see anything. When I do lsmod, I can see lpfc but it is not being used. I also tried /usr/sbin/hbanywhere but it says module not installed So now, I am lost on how I will rescan the disks without doing a reboot.
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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 RelatedI have a Linux system running on an older Sun V20z. The drives are mirrored in a software RAID1. The motherboard has interfaces for only IDE and SCSI. The system is old and is no longer able to handle the load we're putting on it. I also have a much newer Sun X4100. This system is presently unused and has a pair of SAS drives in it. The new server only has SAS and SATA connections on the motherboard, though. I'm trying to think of the best way to clone the V20z over the X4100. I don't mind breaking the mirror knowing I can re-establish it later. I prefer not to do a fresh OS install followed by a tape restore. I would much rather break the mirror and clone one of the SCSI drives the SAS drive. I do have a USB to SATA adaptor for migrating external drives. Anyone know if this will work with a SAS drive? Any pointers on the best way to migrate this? I'm thinking even if the cloning is successful, I'm going to have to much with GRUB to get it to boot from the SAS drive?
View 1 Replies View RelatedI am attaching a LTO-3 tape drivce into my RHEL5 linux machine. Every time i used to restart my machine to detect the tape drive is there any way to rescan the buses to detect the newly attached scsi devices. In solaris "devfsadm" and "iostat" is there. I need the same kind of thing in linux.
View 2 Replies View RelatedI have installed Ubuntu server 10.10 today and I am trying to mount the scsi cdrom drive in a Dell Poweredge 2850. I can see the device in dev listed as scd0, but when i try to mount it to /media/cdrom or /mnt/cdrom I get a long list of I/O errors: Buffer I/O error on device sr0.
View 3 Replies View RelatedI have a virtual machine with Solaris 10. On this virtual machine I have to configure an iSCSI initiator.
The problem is that i have no physical SCSI devices to connect to my LAN
Therefore I have to create a Virtual SCSI device on my host laptop and configure it as an iSCSI server (iSCSI target) and share this virtual disk on the LAN.
What is the factory default SCSI target for /dev/sd0?
View 2 Replies View RelatedI have one scsi storage array, JetStor SATA 416S,split into 2 halves. each is RAID5 12TB. Is it possible to dedicate each half to a different rhel5 server. I have "lsi22320-r" ultra230 dual channel scsi adapter in each server.
The first server sees the 2 halfs however the second server doesn't on the first server:
I am testing PCLinux 2009.1 prior to installing. My desktop currently runs on ME and has been out of use for some time. It still works however and I can still get online. I'm currently using a laptop running XP. I would like to make use of my old desktop and tried to test PCLinux 2009.1 today. I followed the instructions obtained online and booted from the Linux cd. The pc booted up ok and displayed the first screen allowing me to select the "Live CD" option. After enter my system hung up at "Probing SCSI Devices:Segmentation fault".
View 2 Replies View RelatedI'm running RHEL5: 2.6.18-164.el5 #1 SMP Tue Aug 18 15:51:54 EDT 2009 i686 i686 i386 GNU/Linux
under VMWare Server 2.0.2. When I create a new disk for my Linux VM I want to be able to use it without rebooting.
I checked what was currently in use:
cat /proc/scsi/scsi
Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
Vendor: VMware, Model: VMware Virtual S Rev: 1.0
Type: Direct-Access ANSI SCSI revision: 02
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i can't access to localhost with firefox although yesterday I could installing XAMPP successfully and access to localhost. Now when i enter to file:///opt/lampp/htdocs/index.php this message is shown :"Something is wrong with the XAMPP installation
View 1 Replies View RelatedSometimes I use vnc server and start desktop. The memory use rises about 2gb during this. I need to be able to turn off the xwindows after I shutdown vnc without rebooting. Is there a way to do this?. And I don't need to know how to disable at boot thats not what I need to do.
View 5 Replies View RelatedI was wonding if there was a way to change from Gnome to KDE without rebooting.
View 3 Replies View RelatedI have NFS fileserver that has served me well for more than year. But recently I noticed that it has started to reboot on its own very frequently, almost once a day! It is most likely not a power related issue as I tried changing UPS/power sources, but no help!So my question is:Is there any log file where I can check which is causing the reboot? There may not be a single logfile, but I need some point to start the investigation!
View 3 Replies View RelatedSuppose 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 RelatedMy server is rebooting frequently(4 to 5times a day) without any logs, can any one help me out to fined the cause for the unexpected reboots of the server. reboot system boot 2.6.18-194.3.1.e Fri Feb 4 15:16 (00:-24)
[root@elastix log]# cat /etc/redhat-release
CentOS release 5.5 (Final)
[root@elastix log]# uname -a
Linux elastix 2.6.18-194.3.1.el5 #1 SMP Thu May 13 13:09:10 EDT 2010 i686 i686 i386 GNU/Linux
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I'm trying to come up with a startup init script that will check to see if the system was shut down gracefully, or if it is rebooting from a poweroff or something similar?Anyone know of a way to check for this condition with the least amount of room for false positives or vice versa?My intial thought is just a startup script that will will check for a file on startup, and on a proper reboot/shutdown just touch the file. But id like to avoid that type of script if possible,
View 2 Replies View RelatedI have installed virtualbox because i wanted to run .exe files for my job. After installation and configuration it asked me to reboot. From that moment when reboots it returns the full symbol of fedora and then the screen becomes black with white letters. I couldn't login ever again. I am new in Fedora, i don't have a backup of my files and i cant't work. I think that this could be a command line or something like this. Is there any possibility to login even once to copy my files to another disk and then to setup Fedora again?
View 11 Replies View RelatedI have two operating systems installed in my computer. one is Windows XP( sp2 ) and another is Ubuntu Linux 10.04Lts. I reinstalled Windows XP. After rebooting, the grub menu is not displaying, only windows is booting, there is no sign of Ubuntu. Is there any way to restore the Ubuntu or I have to freshly install Ubuntu again ?
View 3 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 am trying to install Ubuntu ver.10.10 server on HP DL360 with 2 internal 36GB untra3 scsi drives. The installations seems to have gone fine but upon booting, the OS is stoping at the BusyBox menu with initramfs prompt. None of my boot or root filesystems is mounted here so I can not go further. I've searched all over the net for answers but nothing seems to work.
View 2 Replies View RelatedI'm using Ubuntu 9.10, and a usb webcam that is shown as 'Bus 001 Device 005: ID 0ac8:3450 Z-Star Microelectronics Corp.' by lsusb.
The problem is that on connecting the cam, it just works with the first program I start (skype, tokbox, messenger), and if I disconnect it or switch to another program, it stops to work and I have to restart my computer to make it work again.
Is there some good solution to reset the camera without rebooting to make it work again?
How to update newly created partion in RHEL6 without rebooting the system?partprobe /dev/sdaN...does not work here in RHEL6, however it did work in RHEL 5.
View 2 Replies View RelatedI have installed Debian GNU/Linux 5.0.3 "Lenny" on a Compaq 510 laptop.
The problem am experiencing is that when I start it, it takes about 3 - 4 reboots before I get it to work without an automatic reboot.
I checked the dmesg command and the last part indicates the following:
I don't know what to do so as to enable the PCI interrupt that is should not reboot after a cold boot.
I installed OpenSuse 11.4 (x86_64) a couple of days ago.One of my Drives a PC-DVD RAM (Creative) is not working. This worked under 11.3.The SCSI drive is connected to a PCI/SCSI adapter (AHA-2904).The message I see at boot is: ata_id[443]HDIO_GET_IDENTITY FAILED /dev/sr1I also see the message ata_piix not found, and can not find an option in the kernel
to provide this.his causes the system to wait a long time and slows down boot dramatically
Does Debian have any particular tools or nuances for installing new hardware? I saw some stuff on Ubuntu which is related... but you know.
The dmesg file shows that it's being recognized, but I don't think it's actually being used (i.e. there is no driver installed). This is what's in the dmesg file:
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[ 1.384634] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 253)
[ 1.855496] SCSI subsystem initialized
[ 5.146598] scsi0 : ioc0: LSI53C1020A A1, FwRev=01032700h, Ports=1, MaxQ=255, IRQ=16
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Unless someone has already compiled a driver for Debian Lenny for this hardware, I'm going to have to compile my own I guess. The driver package seems to come with something called mptlinux-4.00.43.00-src.tar.gz which I'm guessing can be compiled for any Linux, but looking at the instructions, it's pretty much beyond me how to get started. It talks about using kernel source to build a module and such and such.