Red Hat / Fedora :: Pvcreate /dev/mapper/disk_bin : Device Not Found?

Feb 28, 2011

I'm facing a problem on Boot on San installation, Os is installed, now I'm trying to define mapper device

for others lun/disk with alias for multipath references
Code: # pvcreate /dev/dm-14 /dev/mapper/disk_bin_rac
Device /dev/dm-14 created

[code]....

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Software :: Cann't Find The Device Created Through Device Mapper In /proc/partitions?

May 15, 2011

Recently, I created a device sc0 through device mapper. The divice could be found in /dev/mapper/sc0. My problem is that the device doesn't exist in /dev/partitions which will block my following test.BTW, I found dm-0 in /dev/partitions. Is it the same as /dev/mapper/sc0? But the device /dev/dm-0 doesn't exist!

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Fedora X86/64bit :: Device-mapper - Reload Ioctl Failed - Invalid Argument Failed To Suspend LogVol00

Sep 10, 2009

I've read hundreds of threads on this problem but they seem to be intermittent and the resolution has been using a different kernel version.

I'm using the latest kernel but I still have this problem

Running Logical Volume Manager gui and attempting to extend the volume results in the same error.

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Hardware :: Red Hat (RHEL 5.6) Device Mapper Not Seeing LUN Changes?

Jun 23, 2011

Dell PowerEdge R610 with QLogic HBA card connected to HP EVA6000 SAN through a pair of switches.When I present space to the server, device mapper doesn't see it unless I restart the multipathd service. Same thing with unpresenting - the /dev/mapper/mpatha does not go away unless I restart multipathd.Here's what it looks like in 'multipath -ll' before and after I unpresent the LUN (without restarting multipathd)...

== BEFORE ==
# multipath -ll
mpathb (3600508b40010716b0000900001a40000) dm-8 HP,HSV200

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Slackware :: 13 2.6.29.6 Cryptsetup Luks Wrong Device Name In /dev/mapper/*?

Mar 3, 2010

Slackware 13 Kernel 2.6.29.6 have three hard drives. Root is on own drive sda1. sdb and sdc are raid via mdadm with two partitions. one for /home raid0 md0 one for swap raid1 md1. md0 is encrypted vi cryptsetup. md1 is encrypted vi fstab. everything boots fine and is accessible. However, /dev/mapper/* shows sda1 as block device connected to the raid md0. swap crypted device is correct in /dev/mapper/*. fstab is set correctly. problem seems to be with initrd. I would like the correct device in /dev/mapper so that I can access drive info; size, available space, etc. now info shows only sda1 info

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CentOS 5 :: Prevent Device-mapper From Loading In Installer

Mar 5, 2009

I am trying to prevent the dm_mod and friends from loading during install.I am installing by PXE boot with NFS and kickstart files over http. This works fine for other machines.Ok, I have a Dell PowerEdge 2900 III with 8gig ram, PERC 6/i raid controller.The raid has 8 1TB drives in it, so the total size of the device is >2TB.There is also an SATA drive, which is NOT on the raid controller.

The problem is, I want to install CentOS on the SATA drive. The SATA drive comes up as a device-mapper drive, with a big crazy device name.This is ok, but the problem is, when the system goes to boot, it just says 'missing operating system'.I can't boot from the raid because it is large enough to require a GPT partition, and CentOS says it can't boot from a GPT partition.The SATA drive would work FINE if I could just prevent the damn device mapper from loading, so that I could install on the SATA drive in ordinary SATA mode.

I have tried re-squashing the stage2.img with /etc/modprobe.conf with alias dm_mod off and such, no luck.I also tried adding an /etc/modprobe.d/blacklist file, that did not work either.I also tried putting blacklist= dm_mod in the kickstart file, but that seems to be a fedora-only option and it kills my install. any ideas on preventing the dm_mod et. al. from loading at install time??

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Server :: Device Mapper Not Recognizing RAID Storage Luns On RH5?

Feb 26, 2010

Greetings Fellow Knights Of The Penguin Clan....!I am having issues with device mapper seeing a 275GB Raid5 Lun from my SAN storage.I'm using IBM 2145 San Volume Controller.I am able to see a 40 GB Raid 10 device though..

########################################################################
fdisk -l |grep 'dm-*'
Disk /dev/dm-6: 42.9 GB, 42949672960 bytes

[code]....

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Software :: Device-mapper-multipath - Slow Failover Period

May 10, 2010

I have a linux machine, attached to a fibre channel SAN.

We're in the testing phases and we're attempting to get all of the bugs worked out before this goes live.

If i have my host streaming data to the storage device on the san (or from the device on the san) and simulate a path failure (by shutting down one of the host's ports on the FC switch), multipath does not pick up on another path until about 45 seconds have passed.

I can verify this by watching the statistic graph (which updates once per second) on the storage system.

I see iops running along rather nicely, and then they drop to 0 for 45 seconds, then pick right up to normal again.

This is a RehHat EL 5.5 system, with qlogic HBA's.

Am i being too picky? I'd expect multipath to recover in under 30 seconds, so as to not alarm host applications running on the linux host... 45 seconds seems like a long time to wait for a disk operation to complete.

Any tips on tuning Multipath, or the qlogic card? As it is, i've got the following options in my modprobe.conf.

alias scsi_hostadapter2 qla2xxx

Code:

My multipath.conf looks like:

Code:

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CentOS 5 :: Yum Update Dep - Device-mapper-event Is Needed By Package: Lvm2

Sep 8, 2009

Trying to do a yum update to get everything to latest, towards the end it says this:

[Code]...

how to get around this? I tried yum clean all, then yum update, again but it did the same. I had other deps missing on other servers but yum clean all fixed them -- can't find anyone else who's had this specific issue either, nor an rpm called 'device-mapper-event' or the other things that are missing - am kinda stuck!

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Ubuntu :: Error: Device-mapper: Reload Ioctl Failed: Invalid Argument

Jun 13, 2010

I'm having some difficulities with truecrypt and cannot figure out what's wrong since this is my first attempt to create hidden encrypted partition. I'm using ubuntu 9.10 64b with latest 6.3a truecrypt. After using truecrypt gui (just command truecrypt) I've tried: create volume-->create volumne within a partition/drive-->hidden trucrypt volume --> select some /dev/sdX by my choice --> select aes & sha512 --> password --> and format it.

when formating finished message "wrong ss, swith or wrong superblock of /dev/loop0" appeared. I've got no idea what could I do with it neither know whats program trying to do! Ok formating's done, then if you're trying to mount that partition then I would expect prompt for password, but that did not happen ...

EDIT: sudo mount /dev/loop0 /media/tmp/ also complaint about wrong superblock, but that does not ring any bell since i've got no idea what /dev/loop0 is or is for...

EDIT2: I've tried another approach also:

sudo truecrypt -t -c
sudo truecrypt -t /dev/sda3 --filesystem=none

but the first command finished creating 100G drive in 1 sec (nonsense) and latter one prints:

Error: device-mapper: reload ioctl failed: Invalid argument
Command failed

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Ubuntu Security :: Dmsetup - Device-mapper - TrueCrypt - And Desktop Icon Labels

Jul 8, 2011

Anyone know how device-mapper works, or can someone point me to any docco (other than the man page)?

Couple years ago I wrote a TrueCrypt wrapper script for use on Puppy Linux, and am reworking it for Ubuntu. Puppy sometimes didn't have the 'dmsetup' device-mapper utility available, but TrueCrypt still works without this when the '-m nokernelcrypto' option is used.

My script notices when dmsetup is available and skips this option. When the TC volume gets mounted (somehow using dmsetup), the Desktop icon is labled with the leaf name of the /media/mount_point -- so far, so good.

However, if I force the script to add the no-kernel-crypto option, and the TC volume is mounted without using dmsetup, the Desktop icon ls labled with the size of the volume. Say what?

Running df shows the difference between the two mounts is whether /dev/mapper is used. So *how is* dmsetup making this happen? The manpage isn't much help. Is it just the 'rename' sub-command? I am unable to find any details about this mechanism.

Code:

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CentOS 5 :: 5.3 In VMWare ESX - Device-mapper: Dm-raid45: Initialized V0.2429 Waiting For Driver Initialization

Apr 2, 2009

I run many 5.2 virtual machines inside of VMWare ESX3.5 I've updated a couple of test VMs from 5.2 to 5.3. The thing that stands out is that during boot time, the sequence gets to this stage:

device-mapper: dm-raid45: intialized v0.2429 Waiting for driver initialization.

Here it takes about 3 times longer than the previous Centos 5.2 (about 9 seconds instead of 3). Whereas inside a physical box the wait in 5.3 is the same as it was in 5.2

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Fedora Installation :: I2O Controller - No Volume Groups Found Volume Group "VolGroup00" Not Found Unable To Access Resume Device

Apr 8, 2009

Dual PII 400, 512Mb with a Promise SuperTrak 100 IDE Array Controller. At present I have only one drive on the controller, configured for 1 JBOD array. I install FC9 with no problem. New partition is created and formatted, Grub is installed, and then... Grub is found and booted, but then I get:

Reading all physical volumes. This may take a while... No volume groups found Volume group "VolGroup00" not found Unable to access resume device (/dev/VolGroup00/LogVol01) mount: could not find filesystem '/dev/root' I can boot in rescue mode, chroot to the installed system. I changed the kernel boot parm "root=/dev/VolGroup00/LogVol00"

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Fedora :: ROOT Device Not Found?

Jan 26, 2011

i am really facing too much problems with fedora 14.yesterday due to low battery my lapi turned off n when i rebooted.

i got a error:-"NO root device found,boot failed...sleeping forever..

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Fedora Hardware :: No Root Device Found?

Aug 14, 2010

Error : no root device found. booting has failed, sleeping forever.

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Fedora Installation :: 14 - No Bootable Device Found?

Nov 10, 2010

I am trying to install fedora 14 from live CD (USB boot) in my system which already has Windows 7. The installation goes fine however when I reboot the system I get 'No bootble device found' error. install fedora on the entire hard disk which I cannot do right now.

In Bios there are 'Native' and 'Legacy' options for 'ATA/IDE Mode' and if I select 'Native', 'Configure SATA as' option is enabled with options 'AHCI' and 'IDE'. I reinstalled fedora with all possible configuration, Legacy mode, Native + AHCI, Native + IDE but got the same error when booting. I have also tried options; MBR on /dev/sda and first boot record on /dev/sda5.

fdisk -l :
Device Boot Start End Blocks Id System
/dev/sda1 2048 78782463 39390208 5 Extended
/dev/sda2 78782760 211897349 66557295 7 HPFS/NTFS

[Code]....

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Fedora Hardware :: Can't Mount Device - Kingston USB Not Found

Jul 27, 2011

Fedora 14 is used throughout the whole problem. The problem started when I wanted to install Fedora 15 DVD by making a bootable USB key. The size of the USB stick is 8 GB. The problem happened when I (following the tutorial) wrote the line [URL]... livecd-iso-to-disk command associated with the path to the ISO DVD and the partition on the USB stick. the USB stick has the device name /dev/sdb , 1 partition sdb1.

I then noticed that it was mentioned to unmount the USB drive before doing this command. so, while the terminal had written in it "Checking" , I pressed CTRL+C to stop the execution and then pressed on the arrow beside the device in the computer window (Which I think that it unmounts the device). The actual problem started here. I then tried to mount the device but couldn't, It said the device was not found. so I removed the drive and inserted it again, the OS didn't automount the USB drive, I tried to manually mount it but it said the device is not found or doesn't exist. then I used fdisk -l, It said that the sdb didn't have a valid partition table. Also the size of the device is wrongly reported. It should be 8 GB but it is reported to be 2 TB?!

[code]....

I think the wrong partition table made it think that it has a certain number of sectors which isn't real,that made it think that the device is 2 TB large....

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Fedora Installation :: F12 LiveCD "No Root Device Found?

Nov 17, 2009

When I try to boot from Fedora 12 LiveCD system halts with the messages: "No root device found" "Boot has failed, sleeping forever"

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Fedora Installation :: No Root Device Found, Boot Failed With 12?

May 20, 2010

I have installed Fedora 12 on my HP laptop which has got a NVIDIA graphics card. I have got latest F12 kernel 2.6.32 as well as default kernel 2.6.31.I have installed Nvidia Proprietary Drivers and modified grub.conf file for 2.6.32 kernel saying blacklist nouvaue so that it can load NVIDIA drivers ...After that I am able to successfully boot into 2.6.32 kernel with Nvidia Proprietary Drivers.Everything seems to be fine .. But suddenly today when I tried to boot into F12 2.6.32 kernel I got the following error

Code:
No Root Device Found
Boot Failed, Sleeping Forever

[code]...

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Fedora Installation :: Repartitioning Failed - No Root Device Found?

Feb 19, 2011

I didn't like my partitioning layout so I have repartitioned and reformatted the drive. I have copied the backed up back onto the hdd, and i have installed grub successfully. Still, when I boot the machine, I get an error message: "No root device found. Boot has failed, sleeping forever.". When installing GRUB, it managed to found /boot/grub/stage1 without a problem, and I have installed it onto the MBR

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Ubuntu :: VFS: Cannot Open Root Device "mapper/mylaptop-root" Or Unknown-block(0,0)

Nov 5, 2010

Installed Maverick last night... the system has been working fine all day... then on a reboot tonight got the following.

RAMDISK: gzip image found at block 0
usb 1-2: new high speed usb device using ehci_hcd and address 2
uncompression error
VFS: Cannot open root device "mapper/mylaptop-root" or unknown-block(0,0)

[code]....

Then it gives the Kernel Panic

Kernel Panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
Pid: 1, comm: swapper not tainted 2.6.35-22-generic #35-Ubuntu

Then a call trace...This is a brand new install of Maverick I copied my files onto a USB and did a fresh install on the whole drive using the alternate CD (the desktop and netbook editions both failed to read on my system) was previously using Karmic with no issues. I tried to e2fsck the dev/sda1 from the CD in "repair broken system" mode but the return was "clean" I read that as the file system being intact but this is an area that I have no real knowledge in.

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Fedora Installation :: F12 Upgrade - Boot Failure / No Root Device Found

Jun 1, 2010

I'm a long time Linux user. Finally got around to upgrading my Fedora 11 system to Fedora 12 by using the 'preupgrade' tool. The upgrade appeared to go well (downloaded packages, rebooted into installer, etc). However, now that the upgrade is complete, I'm unable to boot my system.

Here's my configuration:
/dev/sda (80Gb)
200Mb /boot partition (ext3)
52Gb / partition (ext4 - managed as logical volume)
2Gb swap partition (managed as logical volume)
20Gb /spare partition (ext3 - managed as logical volume) .....

All worked fine under Fedora 11 for the last few months. Grub now presents me with 'Fedora' and 'Windows XP' boot options. The /boot/grub/menu.lst file is essentially the same as it was for Fedora 11, except for the different kernel versions, etc. The boot sequence shows the Fedora bubble (??) and gets about 80% full when the screen goes black and the message displayed is:

No root device found
Boot has failed, sleeping forever
If I boot Windows, all works fine.

Am able to boot using a SystemRescueCD disk. The disks all look okay and I can mount/modify all partitions, etc. The grub menu.lst file read as follows (sorry, typed in, not copied):
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora (2.6.32.11-99.fc12.i686.PAE)
root (hd0,0) .....

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Fedora Installation :: Install Ok - But Boot Failed - No Root Device Found

Nov 21, 2010

I have 2 Debian OS's and wanted to put Fedora next to it.

Install went ok, but after rebooting it says: "No root device found. Boot has failed, sleeping forever."

During install from the live CD I didn't "v" the boot (efi or something?) because I thought Grub would take care of everything.

Should I just reinstall again and choose the Fedora bootloader? Won't it mess up Grub?

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Fedora Installation :: Failure Screen Goes Black And Saying No Root Device Found?

Jan 14, 2011

I insert my F14 CD and booted the computer; I see the beginning of the installation and the the screen goes black and says:

No root device found.Sleeping forever. Boot failure.

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Fedora :: Error - No Root Device Found. Boot Has Failed, Sleeping Forever

May 7, 2010

I have a Feadora 12 Live CD. It booted up fine on my 700 Mhz computer. I've since then put a new HDD in with which I intended to install Fedora on. But now i get this message

Quote:

No root device found. Boot has failed, sleeping forever

What does this mean? How do get the Live CD to boot?

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Fedora Installation :: No Root Device Found, Boot Has Failed, Sleeping Forever?

Feb 8, 2011

I downloaded fedora 14 64 image then created a bootable flash drive and put the image on the flash drive. I rebooted and tried booting from the flash drive and that's the message I received. What do I do?

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Server :: RHEL - No Pvcreate At Rescue Mode

Jun 29, 2010

Im trying to restore RHEL 5.3 which was previously installed on LVM. I have completly new disks.

1. I have started RHEL install DVD with option: linux rescue
2. set up network
3. connected to NFS server where the backup is stored
4. restored partition image: dd if=/mnt/source/layout.bin of=/dev/sda bs=1024 count=1 (this will preapare partitions like it was before backup. After that it is necessary to run fdisk /dev/sda and choose oprion "w" - write)

Now, I want to create Logical Volumes, but I have no "pvcreate" command in RHEL rescue mode.

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General :: Problems With Pvcreate To Create A Physical Volume For RAID 1

Jul 29, 2010

Hi,

I am experiencing problems in creating a physical volume on RAID 1 system.

Here is what I did.

#/usr/sbin/pvcreate /dev/md0

the message reads:
"Device /dev/md0 not found (or ignored by filtering)."

The /dev/md0 has a partition type 8e for linux LVM

Can anyone enlighten me?

Thanks

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Fedora :: Booting: "no Root Device Found"?

Mar 10, 2011

have been fiddling! moved my partitions around (without using any cd by installing grub2 to boot to an iso of gparted).I moved:

swap,ntfs,ext4(fedora13)
to:
swap,ext4(Fedora13),ext4,ntfs,unformated

[code]....

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Ubuntu Installation :: With NVIDIA 310M Graphics Card Drivers (310M) On A Dell Vostro 3300 - Errors "no Device Found - No Screens Found"

Oct 28, 2010

I have a Dell Vostro 3300, i5 460 processor with a NVIDIA 310M Graphics Card. I'm doing a KUBUNTU 10.10 (Maverick) install with the following results. The Live CD boots just fine to, "TEST," or "Install." Installation goes fine. However, the graphics card being used is the Intel i915. I have tried installing the NVIDIA drivers directly from the, "Additional Drivers," tool and after the reboot I get through the boot screen to the console. I try to manually startx and I get the errors, "no device found," "no screens found." The second install I tried purging and blacklisting the nouveau drivers and entering safe mode. Then using apt-get install nvidia-current. After that, nvidia-xconfig. Same results.

The third attempt I re-installed and this time downloaded the drivers from the Nvidia site (version 256.53). Blacklisted nouveau, remove all nvidia, updated initramfs, etc. The install went fine however I still end up at a console after boot with the same messages as above. No device found, no screens found. I've tried searching through the forum and web and have tried things like adding the modset option along with many other hacks, tips and fixes. still, no go.I can live with the Intel graphics for now although I lose 512MB of memory. Unfortunately there is no way to disable or change this set-up in the BIOS. I've seen quite a few bug reports at Launchpad:

1. Is this something I should just wait til a fix comes? Will a fix come?
2. Is there, or will there be an official Updated Ubuntu Guide for Maverick to install NVIDIA drivers with this tecnology?
3. Lastly, is there anything else I should try??

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