Fedora X86/64bit :: How To Reset/decrease Scsi Host Number
Feb 17, 2011
In /proc/scsi/scsi, we can see the scsi host no. (scsi identifier no.). for e.g. Host: scsi4 Channel: 00 Id: 01 Lun: 00 In above e.g., scsi identifier no. is 4. Whenever we modprobe a particular module associated with scsi devices, we can see new entry in/proc/scsi/scsi with a greater identifier no. When we do rmmod on that module, the entry from /proc/scsi/scsi wipes off but still the counter of scsi identifier no. doesn't decreases. is is there any way to reset or decrement this counter so that next time when I do modprobe on scsi related module, it will assign no.s starting with 0 ? I found that during registering a scsi device, scsi_register() method gets value from "next_host" (which is a static int initialized to 0) and then increments next_host counter. Also, during scsi_unregister(), it decrements next_host counter. rmmod internally calls scsi_unregister(). So, if it is true then why the scsi host id. doesn't decrement during rmmod?
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Feb 15, 2010
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
code....
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Feb 1, 2010
i have a linux machine installed with RedHat 4.7 x64 bit. toady our machine just hanged and the only thing we can do was to do an hard reboot.i saw that when she hanges all her disk looks offline. in /var/log/messages i only saw this error message:
kernel: lpfc 0000:10:00.0: 0:0713 SCSI layer issued LUN reset (0, 4) Data: x0 x0 x0
we have 6 disks in RAID 5 in this machine- SAS disks. i've search in the net and looks like the emulex driver told the SCSI to do a reset for some reason. how can i check this issue? machine is online now and everything looks ok but i'm afraid i have a problem perhaps with my disks and this is a production machine so it cant happened again.
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Oct 20, 2010
I have two servers, one has an empty / and the other has a subdirectory with a large number (4 gig) with many, many files. I need a way to transfer the files en masse from the server with the large number of files to the one that is essentially blank.I don't have space on the used host to simply gzip all the files. I've googled this and see that there may be some combination of tar and/or gzip that will let me do this with some sort of redirection.
I really need and example line of how this can be accomplished. If my explanation seems rather sparse, I can supply more details.
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Mar 29, 2009
Ive loaded 64studio (hda6) grub in MBR, and fed10 grub on its partition (hda8), but from Studio it seems i cant Mount fed10 files to look at the Kernel path from MBR. (studio did not auto pick it up, like it did for Mandriva on hda7)
Does anyone know what it is ? something like kernel /boot/vmlinuz.....and Initrd(hd0,7)/boot.initrd.img .....then i can Edit menu.Lst in MBR grub.
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Jan 23, 2010
i am writing block deriver for usb device in linux i want to read and write data to/from usb device i already registered usb device with my driver and opened the handle for the usb device now i need to send scsi command to usb device to make it work but i dont have knowledge about scsi commands and how and where to use them now i need to know which scsi command i need to pass to the usb device and how can i pass that command to usb device also i need some information like how to register host controller with my usb driver
if anyone knows about this or where can find the tutorials / documentation/ framework for the same.
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Mar 16, 2009
I've just put together a Centos 5.2 system using an old Future Domain SCSI card which would allow me to hook up an external DAT drive. On its BIOS screen it advertises itself as an AHA-2920 which should be handled by the aic7xxx module. However, the module doesn't even get loaded unless I force it in /etc/rc.modules and even then it doesn't pick up the card.
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Apr 7, 2011
we need to connect 80pin SCA Ultra320 SCSI hdd to 68pin on host adapter. The adapter we got is Assmann ABSCA-2. Hard drive is 'Fujitsu MAW3073NC'
we have two 68pin cables, one with and one without the terminator on end. which one to use?
it is essential the drive doesn't get damaged.
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Oct 12, 2010
I experience the following issue with Ubuntu 10.10 x86_64, kernel 2.6.32-25-generic: When I login after having logged out, the theme is reset from Radiance to a quite coarse one withs grey folders and very basic icons. System|Preferences|Appearance->Theme tab just considers it Custom. No change to window borders, and trying to change the theme just affects the borders. Does not happen on a Ubuntu 10.10 32 bits installation.
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Jun 3, 2011
I'm unable to reset using either the reset option in gnome shell or the command using a terminal. When I select it the shell exits and displays the graphic "exploding" and then it just sits there. Shutdown works fine; just no reset. Any ideas? I've installed from the DVD. I booted the live CD and it resets just fine so I know it's no my hardware
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Apr 11, 2011
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?
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May 4, 2010
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.
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Jun 23, 2011
Some 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
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Mar 7, 2011
If one is running a 32 bit machine, how many partitions, including the extended, will the system allow? I seem to think that 15 is the answer. Same question for 64 bit machines. (?)
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Jul 6, 2010
I am new to Fedora, and I noticed when I opened my home folder that I only had 54GB. My HD is 120, and when I used the disk utility, I noticed that 64GB are in ext4! What?! This was not a problem in Ubuntu, so why has it happened now? Is there anyway I can decrease the size of ext4 and give some of it to Fedora?
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Sep 25, 2009
I've been working on this for 3 days now and can't find any solution any where on the internet. (At least not one that works for me). I try to build a 32bit PHP RPM on a CentOS5.3 86x64 host. Every post I read indicates that it should be possible, but not for me. I issue the following command (found somewhere in a post):
Code:
CC='gcc -m32' linux32 rpmbuild -ba --target=i386 SPECS/php-5.3.0.spec
Then it starts:
Code:
Building target platforms: i386
Building for target i386
Executing(%prep): /bin/sh -e /var/tmp/rpm-tmp.43870 .....
RPM build errors:
Bad exit status from /var/tmp/rpm-tmp.72849 (%build)
With the following command I tried I get the same error:
Code:
rpmbuild -ba --target=i386 SPECS/php-5.3.0.spec
Some rpms of interest(?)
# rpm -qa |grep "cc"
libgcc-4.1.2-44.el5
libgcc-4.1.2-44.el5
psacct-6.3.2-44.el5
pam_ccreds-3-5
pam_ccreds-3-5
ccid-1.3.8-1.el5
gcc-c++-4.1.2-44.el5
gcc-4.1.2-44.el5
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Mar 23, 2011
I have 64bit debian 6 squeeze installed on my 64bit pc. I have an NVIDIA gpu which I have installed the drivers for and they work just fine. I also have a 32 bit chroot located at /32 which was created using debootstrap. The NVIDIA 64bit driver gives the option to install compatability driver libraries into the 32bit chroot. Whenever I run any application that uses opengl rendering within the chroot, they segfault. When I uninstalled and reinstalled the NVIDIA driver without installing the libraries to the chroot, and instead replaced them with mesa gl libraries, the programs complain about framebuffer missing. They do not segfault, and some programs that can use sdl instead will work fine. I have xhost + set to allow any programs in the chroot to use the host's xorg. I have the host's proc mounted to the chroot proc directory, and i also have dev mount --bind 'ed to the chroot.
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Apr 1, 2011
how to get the port number of the "ajp13" service running on host master?
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Feb 16, 2011
I am trying to install skype on a 64bit Fc14 and the 32bit doesn't work.
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Mar 16, 2009
Downloaded from here: [URL] then ,it is 32-bit and I need to know what all 32-bit libs are needed as dependency for skype to work. I am on Gnome Fedora and purposefully selected static version of skype to prevent installation of libqt4.
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Jan 15, 2010
I have the simple fortran codes as:
Code:
integer :: i1=2455121, i2=2455121
real :: s1=0.19123840, s2=0.20749992
real*8 :: a1, a2
a1=i1+s1; a2=i2+s2
[Code]....
When s1 and s2 are stated with 'real*8', the 64bit and 32bit systems get the same results.
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May 24, 2010
I just bought sony vaio laptop(EB16) couple of days before.I had window 7 OS. Two days before i downloaded Fedora-12-x86_64-DVD & installed in my PC.Everything is working fine except when i play any video or audio file such as .avi, .mp3 from any player such as vlc player, movie player ,xine etc , i don't get any sound.I tried to search this problem in internet but still i am not able to resolve this problem.
[Code]...
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Aug 18, 2011
Im trying to set up my 3G modem to recive and send sms but I had no luck so far
Code:
Bus 002 Device 010: ID 19d2:0031 ONDA Communication S.p.A. ZTE MF636Im I tried with gnokii and wammu and many other things and did not want anything to do
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Aug 15, 2009
Can anyone get the website below to work correctly with Firefox 3.5 and F11 64bit?[URL]...All I see is the background scrolling slowly and jerkily, none of the buttons at the bottom work. Reboot into Windows 7 and IE8: the same site is fast, smooth, the buttons work and the product details appear correctly in the centre of the screen.
I've tried disabling all adblock /pop up block options, ensured all javascript options are enabled and no change. Could this be a problem with the 64 bit flash player (installed from leigh's sticky thread) or a problem with OpenJDK?
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Feb 4, 2010
Only asking if there is any official NVIDIA drivers for 64bit of fedora ?
And, What is the best alternatives ?
Also, What is the best graphics card to use with Fedora 64bit so i buy it ?
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Oct 17, 2009
Edit: now working, thanks very much Leigh and Dangermouse.
Anyone successfully installed AIR and iPlayer on F11?
I've switched to 32 bit Adobe flash, tried Autoten for AIR and Dangermouse's advice for iPlayer: url.html but it's not working, and trying to install AIR from url results in an endless busy downloading graphic .
I assume my problem is a lack of required packages, though I searched the repositories using YUM extender for the packages listed here: url.html and can't see them either as installed or available.
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Oct 18, 2009
I want to install IBM Lotus Symphony on my 64 bit system, but yum only finds 32 bit version.
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Sep 1, 2010
i have a asus K8N-DL MB with 2xAMD64 opteron270 and 4G ram3x1TB drives in raid 5 using onboard SIL controllerand 2 SATA drives also on SIL but not raidedhad previously had F10 64 bit loaded whick workedtried to upgrade and failed (destroyed data)tried a fresh install low level formatted the 3x1TB and made them into raidleft other drives as is
takes a long time to boot into the point of trying to find HDthen nothing found
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Jun 21, 2011
As i just started to write scripts, i'd obviously like automize some actions, therefor i'd like to check the users system if its 64bit. Is there a function to check this?
were's a good start to get into bash scripting, the files i use as template gave pretty much good info, but yet i have no idea what i'm actualy doing
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Sep 2, 2011
Iam trying to install F15 64bit but I failed my hardware as folow
mb : asus m5a88m
cpu: amd phenom ii x6 1100t
ram: 8 gb 2x4gb Kingston 1333
hdd : wd 1tb sata3
wd 1tb sata2
vga: ati 4250 b/in
installation media: downloaded dvd image burned the image installed correctly inside vmware and work as expected but the media boot to the first screen quistion and when press ok for new installatin the answer is a serious of errors messages (a lot of it). did my hardware not compatible??
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