Ubuntu :: Boot Freezes At SCSI Attached Devices?
Jul 22, 2011
i was fooling around with ATI graphics settings and after i went to reboot my Desktop it kept comming up with odd symbols instead of a log in screen, then i started to try and do things with a LiveCD and screwed things up even more so now any time i attempt to boot, even into recovery, it stops at the line
[2.573600] sd 6:0:0:3: [sde] Attached SCSI removable disk
i have tried to do multiple fixes with no avail and i am not very savvy with linux as i have only been using it under a year, so it would be awesome if anyone could help this is 10.10 Maverick and the 32bit version,
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May 29, 2010
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
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Aug 31, 2010
One question: should F13 mount all attached USB devices after boot automatically? I guess it should. However, what I've experienced is that after boot and login, my USB modem + flash memory is not mounted. I need to manually unplug it and plug it again, and then it's mounted
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Oct 14, 2009
We just setup a HP DL380 with CentOS 5, and ran all of the latest updates.I am trying to attach a Compaq array (no model number) that is SCSI attached. I can see the array from the bios and created a raid group on it from there. However, from LVM and lvscan, I don't see it at all. I checked dmesg and there are no errors.Also, interestingly /proc/scsi/scsi is empty.
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Feb 16, 2010
I have a large RAID array of 12 TB attached to one of my Ubuntu server machines. The RAID volume is formatted with NTFS. The problem is that I can not mount this volume in Ubuntu. I can read it normally if I attach it to windows machine.This is the output from "sudo fdisk -l":
sudo fdisk -l
Disk /dev/sda: 164.7 GB, 164696555520 bytes
255 heads, 63 sectors/track, 20023 cylinders[code]........
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Dec 22, 2010
I 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.
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May 12, 2010
Need help on how the scsi and multipathing works in Linux. From the docs i have read, i understand that by the use of multipathing we can assign multiple paths to a SAN partition. If there is a problem then one path will failover to other path.However, i am not clear on how linux recognizes the SAN partitions using the multipath drivers. For e.g. I have a HP Proliant server on which we have the following mounts:
Filesystem Size Used Avail Use% Mounted on
/dev/cciss/c0d0p3 59G 11G 46G 20% /
/dev/cciss/c0d0p1 494M 27M 443M 6% /boot
[code]...
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Jan 23, 2010
What is the purpose of SCSI emulation for IDE devices?
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Jan 1, 2011
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".
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Nov 17, 2010
As the title says the machine name is not showing up in the attached devices list on my router. Is there a file where I need to add the name? Or is this an issue with the router? The router finds all the other machine names on the network except my 3 servers.
Ubuntu Server 10.04 Lts
Ubuntu Server 10.10 Lts
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Mar 21, 2011
I want to devolep one "C/C++" program that will work as a daemon. My daemon will be running all the time, and whenever anybody attaches removable devices to machine on which my daemon is running, My daemon should catch that event and also should show me where that device has been mounted.
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Mar 24, 2011
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).
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Feb 24, 2010
Find external and internal devices attached to a system in Linux
How can i find through terminal that which devices are external and which are internal.
By external i mean devices attached to USB port. For Example, USB Drive, Portable USB HardDrive etc
By internal i mean devices attached internally. For Example, SATA Harddisk etc.
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Feb 24, 2010
How can i find through terminal that which devices are external and which are internal.
By external i mean devices attached to USB port. For Example, USB Drive, Portable USB HardDrive etc.
By internal i mean devices attached internally. For Example, SATA Harddisk etc.
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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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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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Feb 21, 2010
I have a desktop version of Ubuntu 9.10 installed on a machine that generally I only want to access remotely (using TightVNC). That is because the machine is under my wife's desk and she is getting a little ticked off that there is a screen right by her foot. The problem is that if I remove the screen then the system gives me a startup error and will not boot. I then have to reattach the screen and select normal startup.
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Jun 13, 2010
My computer is hanging on boot if I do not have the USB drive attached. The USB is in /etc/fstab as: UUID=023d6f83-04f5-4248-82d6-c2dbd1a77e18 /mnt/usbdrive ext4 defaults 0 0
This is all I can see on the monitor once it hangs (Ubuntu1004 is the label on my root filesystem): fsck from util-linux-ng 2.17.2 Ubuntu1004: clean, 56288/1921360 files, 425861/7681078 blocks
If I plug in the USB drive while it is at this point, it is happy and continues booting...
Here is some output from /var/log/messages if it helps at all (I'm assuming the 6.977 and 120.245 are times, meaning I plugged in the USB drive at 120 seconds, so you can see that it was hung up during that time):
Jun 13 11:35:30 BSERVER kernel: [ 6.791619] eth0: link up, 100Mbps, full-duplex, lpa 0xC5E1
Jun 13 11:35:30 BSERVER kernel: [ 6.832413] Console: switching to colour frame buffer device 80x30
[Code]....
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Jul 13, 2011
I'm using GRUB to dial boot ubuntu 10.04 and windows 7. Usually it works well. But if I attach my 2T hard drive to the my computer, the booting process will froze after choosing the system to boot. There's nothing I can do but cut off the power.
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Aug 31, 2010
Using 9.10 in dual-boot with XP:
Dell 600SC running an Adaptec 39160 dual channel SCSI controller which has 2 disks connected to it. The machine also has 2 IDE drives connected to it. The boot order of the disks is set to the SCSI disks as the first in boot order (after CD).
I am trying to set it to maximize performance from the SCSI config so I have XP on the first SCSI and I set up Ub 9.1 on the second SCSI in a dual-boot configuration.
In this set up the machine when rebooting goes straight to XP (on the first SCSI) and does not even see the Ub installation. The installation went fine and no complaints. On the same machine if I just had Ub on the first SCSI - machine boots fine (albeit after a long pause looking for the bootloader).
So with XP on the first disk (which I need to - to have XP) the Ub bootloader does not seem to set the right params to be able to boot.
Again this is with 9.1. Not trying 10.04 as with 10.04 I don't even get to boot even with standalone Ub (with no XP). However it installs fine but does not find bootloader in 10.4, so we will keep to the 9.1 for now. I am however open to working with 10.04 if there is a solution in dual-boot with XP in my config.
So again 9.1 installs fine with XP on 1st SCSI disk, an ub 9.1 on 2nd SCSI disk, but then bootloader does not get activated and machine goes straight to XP.
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Jun 21, 2010
I have a 9.10 fully updated install on an old P4 HP desktop that otherwise runs flawlessly. We moved it to the bedroom to use as a media center and when I plug in a Thermolake toaster with a Hitachi 750G SATA drive it is recoginized and available no problem. I can read/write no problem. It works via nfs4 no problem. The issue is if I reboot while the drive is attached it the machine refuses to reboot and hangs on the initial hardware screen not even showing a grub screen. This has always been a native ubuntu machine with no dual boot or any weird grub2 issues previously. Interestingly, I am getting the exact same issue with another HP desktop (Celeron machine) with 9.10 Server 32bit that I' using as a home server. This is obviously a bigger problem because if the server updates or requires a reboot for any reason I can't just leave the drive attached. This drive houses our movie and music collection.
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Nov 15, 2010
I have a different problem with Firewire drives than I've seen posted here before. All my Firewire drives work just fine - too fine in fact. I can't boot without all of them being attached. Without them attached Suse just boots into a command prompt in maitenance mode. With ALL of them attached Suse boots just fine. I have tried shutting down normally with dirves attached and shutting down normally with drives disconnected (both unmounting before shut down and just discounting when machine powered off). Nothing changes. I need to be able to boot without the drives attached - I am using Suse 11.1 64 bit wiht KDE 3.5 on a 4 core Athlon. All system files are on internal hard drives - external drives just for data storage (no external USB drives).
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Jul 5, 2010
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?
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Aug 2, 2010
I have an IBM server with a: "SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 07)", meaning kernel module CONFIG_FUSION. This is the real hardware, not emulated by vmware. With recent kernels (2.6.30-35) the boot results in one of three situations:
1.) Most common: kernel panic, way too long stack dump to see anything useful but did have a terminal briefly to debug this and its just not being able to communicate with the scsi subsystems, google for errors found nothing of use.
2.) Sometimes: A hang waiting for the scsi disks after the controller fails to initialize properly, does not pass in a couple of hours.
3.) Very rarely: A long wait for the scsi controller to initialize but a succesful boot afterwards. ACPI subsystems are taking all CPU power. This is the state the machine is at now, working somewhat.
I can boot the machine with a Gentoo live install disk (kernel 2.6.29 I think) and under that version the controller initializes instantly and there are no problems whatsover using the disks so the hardware seems to be solid!
There were some MPT changes in 2.6.25rc5 so thats the latest kernel I've tried. The errors during boot change to a bit more verbose but thats about it. Unfortunately I don't have a serial terminal with me anymore so cannot capture these errors but it was something about an "unexpected doorbell" with 2.6.24 and nothing memorable with .25. Long story short tho, googling the errors provides no solutions and the little I find points to the controller being too slow to initialize somehow.
I'm running out of ideas here and the server is burning fans like theres no tomorrow (ACPI taking everything it can) so is my only option to downgrade to 2.6.29 (and downgrade udev, lvm2, so on and on and on)? I can't believe I'm the only one for whom this has been broken for several minor versions.
Kernels tried:
- 2.6.29-gentoo (live disk) - works, blazing fast initialization
- 2.6.32-gentoo-r7 - random boot failures and successes
- 2.6.34-gentoo-r1 - same
- 2.6.35-rc5 vanilla - same, better errors, zero useful google results.
I'm not very keen on longshot attempts since it can take a couple of hours of panic-loops to get the machine booted up again and the server functions cannot be transferred to another machine. Also, I'm a bit hesitant to mention this, but the boot has only ever succeeded when a serial cable with something at the other end is connected. At first it was the testing serial terminal and now its just a connection to a UPS.
Attached: bootlog of succesfull-ish boot with 2.6.34 (had to cut some out to make the sizelimit):
Code:
Linux version 2.6.34-gentoo-r1 (root@livecd) (gcc version 4.3.4 (Gentoo Hardened 4.3.4 p1.1, pie-10.1.5) ) #1 SMP Sun Jul 18 18:54:48 EEST 2010
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 0000000000099c00 (usable)
BIOS-e820: 0000000000099c00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved)
[code]....
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Mar 14, 2010
I have Ubuntu 9.10 installed on an old Gateway desktop. It is running a system called Jira using a Tomcat web server, so 99% of the time access is thorugh the web browser. For the rest of the time I access it remotely using TightVNC. This works great so far but the system will not boot if I remove the screen (which I need to do since it is in the way). My question is this...
a. If I uninstall and reinstall using Ubuntu Server edition (32-bit) will the system boot without the screen?
b. Assuming the above will work - can I still access the machine directly using TightVNC (I presume not since that needs the graphics setup). If not, how do I connect to the machine remotely?
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Jul 10, 2011
since upgrading the squeeze kernel from 2.6.26-2-686 to 2.6.32-5-686 Iīve been unable to boot my HP D510S/845G without attached monitor. As this computer serves as router and print/faxserver, there is/was neither a monitor nor a keyboard/mouse attached. With monitor everything works fine, without monitor the computer hangs somewhere. Unfortunately it hangs without logging anything in /var/log.
Reinstalling xorg and xserver-xorg didnīt change anything, neither was the new xorg.conf from dpkg-reconfigure -phigh xserver-xorg of any use. (After booting with attached monitor I disconnected the monitor and ran dpkg-reconfigure) Maybe disabling Xorg would solve the problem, but I want to be able to log in via vnc and use a GUI - for example to configure mythtv. Up to the kernel-update everything was working fine, so I think some changes to the new kernel are responsible. how to fix it or how to start logging earlier in the boot process?
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Jun 2, 2010
I've put a fresh install of Fedora 13 x86_64 on my new server and I have it automatically log in to the gnome desktop so I can control it via VNC. However this only happens when there is a monitor physically connected when the computer boots. If there is no monitor present at boot time, there is no graphical session started, however I want it to start whether or not a monitor is present.
My hardware is a Zotac IONITX-G-E board (which has an Atom N330 and a NVidia ion chipset of some description). I'm using the Fedora default graphics driver (nouveau). Why doesn't it start a graphical session with no monitor, and is there any way to get Fedora to start one whether or not there is a monitor connected?
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May 14, 2010
I can''t make the machine booth when a monitor is NOT attached to the machine. The PC seems to get past the P.O.S.T with minimal HDD activity, and then it simply hangs there, doing nothing. I know Linux is not booted because the HDD flashes briefly only 3-4 times and then absolutely nothing. When a monitor is attached, everything works perfectly.
I read somewhere that this happend when GRUB tries to display graphics, so I edited the menu.lst and removed the graphics line within it, which causes GRUB to display a B/W clear-text boot-menu (when a monitor is attached), but the machine still won't boot with no monitor. I also edited inittab to boot to level 3, same outcome.
More Info:
HW. FIC ION A603
~Welcome to First International Computer, Inc.~
OpenSuse 11.2 - Almost default install
Added SW: VNC and Squid (both active on Init 3 and 5
Boot Loader: GRUB
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