Fedora Hardware :: Cannot Boot - Lost LVM Group
Jan 8, 2010
I just made a really nasty mistake. My system has an LVM for the main system using drive /dev/sda. There is a second LVM using drive /dev/sdb which was actually an old drive that I was using as a backup. In a fit of idiocy, I wiped the partition table on /dev/sdb. Which means I lost my backups, but hopefully only those. I can live with that. (I actually wanted to wipe the partition on /dev/sdc, which was an external drive...)
However, I now cannot boot. On boot, GRUB comes up, and Fedora 12 starts to boot. Which seems to be proof that I didn't delete my real system, since the old drive had an older version of Fedora (10 or 11) on it. This boot process dies during the fsck. Here are the approximate messages (copied on postit notes and running over to another computer):
[Code]....
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May 3, 2010
We have a small network consists of 5 servers, providing SSH for several groups of users. We want the users (e.g., me) be able to log in to any of the servers with their own account. So, we define the user accounts in a server that runs NIS service, and configure all the other servers as NIS clients. We also defined several groups for different user groups, so some users belong to several groups. All the user information is populated by NIS. This setup is working in Ubuntu 8.04, AMD64.
Now I upgrade the servers to Ubuntu 10.04 64Bit. The problem is, now if I log in to one of the NIS client servers using SSH, my group membership is lost. However, when I log in directly to the server, the group membership is retained. For example, in the /etc/group file, I defined the user tliu as a number of awww group:
Code:
tliu:x:1004:
agroup:!:2000:tliu,ian,verickson
awww:!:2010:tliu,bstark,verickson
[code]....
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May 4, 2011
I have got 160 GB hdd. I had installed Fedora 14 on 100 GB. After I had installed Windows XP beside Fedora 14. But I installed Windows 7 on Windows XP shortly before. This time, I can't group boot. The Windows 7 is starting always?
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Oct 15, 2009
I need to install a lvm2 group with encryption and have the /boot file stored within. Is this possible in Fedora's graphical installer? I know it can be achieved in Arch(I know I'll need grub2, I assume that's coming in Fedora 12) I can always install it separately.
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Aug 10, 2009
I just installed Fedora 11 (I installed over the Fedora 10 installation I had already installed)..
-Before I would have Grub give the choice of Fedora 10 or Windows (Where Windows would load the Win Boot loader for my options of Windows 7 and Windows Vista)
-NOW: I have the same options.. But when i select Windows (It loads the Recovery partition) instead of the Windows Boot Loader...
Here is my fdisk -l
Device Boot Start End Blocks Id System
/dev/sda1 1 192 1536000 27 Unknown
Partition 1 does not end on cylinder boundary.
/dev/sda2 192 5414 41943040 7 HPFS/NTFS
Partition 2 does not end on cylinder boundary.
code....
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Dec 8, 2009
During attempted repair of damaged USB stick with fdisk and parted, an error appears to have changed the partition holding the /boot partition. At one point I possibly typed sda1 instead of sdb1 and appear to have lost my /boot partition.
This is on a HP Compaq Presario CQ50 228CA Portable running only Fedora (No multiboot).
I am able to reach most of the programs and data on the machine with the rescue mode from the F12 x86_64 DVD, chroot /mnt/sysimage command - so the main part of the system is still available. But when the machine starts up all I get is the 'grub:' prompt. In rescue mode I can cd /boot but there is nothing to list, and certainly there is no /boot/grub. fdisk /dev/sda1 p reports 255 heads 63 sectors/tracks 25 Cylinders Units=cylinders of 16065 x 512 = 8225280 Bytes Disk Identifier 0x0000000 - and then nothing under the headings Device, Boot, Start End etc...
Previously /boot was on /dev/sda1 a 194 m patition, with 39m used and 146m available (according to logwatch mail),
My questions:
Are there any commands in the grub program that would help my recovery - I doubt it, because grub is in place and running but I am not sure. Could I using fdisk recover the sda1 partition and it's contents? If so - how? If no, could I use the F12x86_64 to update and hence recover the /boot drive and retain the the LVM volumes both programs and content? If no, is my only option to reload F12 from the start, then rsync in my backup /home directory?
Since there had been a fair amount of customization done on the previous F11 which had been preupgraded to F12 I would prefer any option that would retain the customizations ...
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Feb 14, 2009
I'm trying to dual boot Fedora 10 and Ubuntu 8.10. I have installed Ubuntu first than Fedora (with GRUB installed on it's partition) but Ubuntu's GRUB got messed up. I reinstalled Ubuntu and now Ubuntu works fine but I cannot boot my Fedora. I have set "/fedora" as a mount point for the fc10 install and I can see that from Ubuntu but I can not boot into it. I no longer have any idea where to search for some way of getting it to work without reinstalling ....
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Nov 10, 2010
I wanted to experiment with Fedora 14.
The machine has Windows XP and Ubuntu 9.10.
Before today when I turned the machine on there was a black screen with many Linux kernels to choose from and Windows.
I created another for Fedora and installed it on there - the Ubuntu root partition is still there.
When I boot now, there is a blue Fedora screen with just it and Windows.
To make matters worse Fedora doesn't work with my graphics card (Matrox). I would like to get Fedora working but still want to have the ability to use Ubuntu again.
What do I need to change to be able to boot into Ubuntu again and how do I do it?
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Sep 19, 2009
I had Kubuntu 8.10 with KDE 4.0 interface and i decided to try out fedora to see if i liked it and wanted to eventually switch. i've done so many dual boot systems with Kubuntu and not had any problems that i decided not to back up my system this time before running the installation. after running the installation and shrinking my hard drive (200 gb) by 80 gigs, i rebooted to find that Kubuntu was no longer bootable. the first time i booted into fedora, disk utility popped up with a message that said "1 or more hard drives is failing". i ran the test that it recommended and found no problems. then i ran the longer test and still found no problems. i've rebooted a few times and have not been able to see Kubuntu in the boot loader options. if you need any more information i will be happy to provide it. my question, obviously, is how can i retrieve my Kubuntu partition. it is still there but is not bootable.
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Jul 19, 2011
How can I create a user group that restricts Internet privileges to only members in the group, then I will assigns certain applications to join the group for access to the Internet.
For example, I want only group net to have access to the Internet. Group net is then connected to:
Code:
So far, I am using the gnome group policy manager that is standard with ubuntu but Its not working. It is possible that im misdirected and that I should use a firewall instead?
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May 24, 2010
I have a text file that currently has around 150 000 usernames in it. I need to somehow group them into smaller groups of 1000 and then add that value into the DB. for example user xzy group 1 (hopefully the groups will be digits incrementing)
[Code]....
how to search for 1000 then assign them group 1 and then 1001-1999 to group 2 etc.
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Oct 19, 2009
i want secondary users can able to change the files permissions of primary group?user MAC is having www as a primary and httpd as secondary group. But he want to change the file permissions (chmod) httpd group files. Is it possible or not? I think its not possible. If it`s possible then let me know how?
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May 25, 2011
I've been tasked with fixing a Red Hat system that dies with a kernel panic during the boot stage:
Code:
EXT3-fserror (dev sda1): ext3_check_descriptors: Inode bitmap for group 4 not in group (block 67239937)!
EXT3-fs: group descriptors corrupted!
mount: error mounting /dev/root on /sysroot as ext3: Invalid argument
I can boot into a Rescue CD, but I'm a bit out of my element because I don't use EXT3 myself, and I've never had to repair a corrupted file system before.
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Mar 30, 2010
I have window 7, Ubuntu and Cent Os installed in my system. I was actually trying to change boots options but unfortunatly i lost all boot entries. Is there anyway i can recover all three boot records.
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Jun 9, 2009
So I had Windows Vista installed on my laptop(two 250gb HD). After trying to install fedora 10 with the Live CD, with some errors about root and boot, I ( don't really know why) tried the resize option and changed the second HD to 2 partitions. Put boot on the first. The installation was sucessful, i rebooted, but nothing happened. No windows vista, no fedora. So I tried to change by custom installing(installed fedora on first HD) and I guess I messed up a little. I want to boot again into Vista, but even editing grub menus failed. Any ideas on how to solve this?
fdisk -l
Code:
Disk /dev/sda: 250.0 GB, 250059350016 bytes
255 heads, 63 sectors/track, 30401 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x4118425c
Device Boot Start End Blocks Id System
/dev/sda1 * 1 25 200781 83 Linux
/dev/sda2 26 30401 243995220 8e Linux LVM
[Code].....
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Apr 22, 2010
How do the group-ids for the devices in /dev get determined during boot up? The system must get the defaults for the devices some time during the boot process. Where are the defaults listed?
Actual reason for my question is that I need a permanent change of "dialout" to "uucp" or, even better to "dialout,uucp" in this line:
Code:
crw-rw---- 1 root dialout 188, 0 Nov 14 15:00 /dev/ttyUSB0
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Oct 5, 2010
Before creating this topic I googled a lot and found lots of forum topics and blog posts with similar problem. But that did not help me to fix it. So, I decided to describe it here. I have a virtual machine with CentOS 5.5 and it was working like a charm. But then I turned it off to make a backup copy of this virtual machine and after that it has a boot problem. If I just turn it on, it shows the following error message:
Activating logical volumes Volume group "VolGroup00" not found Trying to resume from /dev/VolGroup00/LogVol01 Unable to access resume device (/dev/VolGroup00/LogVol01) ... Kernel panic ...! During the reboot I can see 3 kernels and if I select the 2nd one the virtual machine starts fine, it founds the volume group etc. (But there is also a problem - it can not connect the network adapters.) So, it is not possible to boot it with the newest kernel (2.6.18-194.17.1.el5), but it is possible with an older one (2.6.18-194.11...)
I looked into GRUB's menu.lst and it seems to be fine. I also tried #mkinitrd /boot/initrd-2.6.18-92.el5.img 2.6.18-92.el5 no luck! Yes, I can insert DVD .iso and boot from it in "linux rescue" mode.
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Feb 8, 2011
I have a group (GROUP) with a number of users. I recently added a new user (NEW). NEW is able to read but not write group files, whereas all the other users in the group can read and write to the group files. The permissions for the group files indicate that all members of group should have write permission -rwxrwxr-x
/etc/group indicates that NEW is a member of GROUP
...
GROUP:x:501:GROUP,OLD,OLD2,OLD3,OLD4,....,NEW
[code]....
Don't know if it matters, but both OLD and NEW write to the GROUP files over an internet connection. why NEW can't write to GROUP files? Is there a maximum number of members in a group that I might have exceeded?
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Apr 17, 2010
Mount of filesystem failed. A maintenance shell will now be started CONTROL-D will terminate this shell and retry. groups: cannot find name for group ID 0 root@Sergioc-desktop:"#
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Aug 22, 2010
I need to create a group that has the same permissions as the users group. Can I have the new group be a member of the "users" group to inherit its permissions?
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May 19, 2010
I have a number of users, categorised into various groups. I would like one of those groups ("developers") to be in the wheel group as well. I don't want to just copy the people from the developers group into wheel, because then when that group changes I'll have to change it in two places. Is there a way to specify that anyone in developers is in wheel, and have that be dynamic?
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Aug 30, 2010
I have a relatively new server (Ubuntu Server 10.04.1) with a "/backup" partition on top of LVM on top of an MD raid 1.Everything generally works, except that it freezes during the fsck phase of bootup, with no errors. I've given it 20 minutes or so. If I press 's' to skip an unavailable mount (documented here), it reports that /backup could not be mounted.here are no LVM related messages in /var/log/messages, syslog, or dmesg.
When I try to mount /backup manually, it reports that the device (/dev/vg0/store) does not exist. Apparently the volume group was never activated, though all documentation seems to claim it should happen automatically at boot. When I run "vgchange vg0 -a y", it activates the volume group with no issue, and then I can mount /backup./etc/lvm/lvm.conf is unchanged from the defaults. I've seen posts mentioning the existence of a /etc/udev/rules.d/85-lvm2.rules , but no such file exists on my server, and I'm not sure how I would go about creating it manually, or forcing udev to create one.There are some open bugs describing similar problems, but surely it doesn't happen to everyone or there'd be many more[URL]
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Feb 8, 2011
I make a group a member of another group?
I am running Samba and want to include all groups as members of the Domain Users group so that I don't need to add this for every user?
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Dec 28, 2009
How do I move files "lost+found" and "boot" from filesystem into a larger partition my harddrive? I am using Fedora 12 and am new to the system.
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Apr 28, 2010
I recently mashed the passwd, shadow, gshadow, group files in my Fedora 12 installation. I was dumb and didn't take a copy of the originals and all I have is the originals from a Fedora 11 installation.
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Apr 20, 2010
A bit of an oddity that I've recently run into with my storage folder in my system; it's a newly installed drive that I've set to mount at /storage. When I first tried to use it, programs that I used that attempted to write to it tossed Access Denied errors at me in their own way. Checking the permissions (at the Terminal, ls -l / | grep storage) showed that /storage was set to 'rwxrwxr--'--Owner and Group were given full read/write/execute, but Others could only read. However, my logon to my system is a member of group root. Why, then, with the above bits set, would I not be able to write to it? Changing Others permissions to rwx (and presumably rw would have worked out for me since I don't leave anything executable there) allowed me to write to it, but I don't understand why that would have been necessary. So far as I'm aware, the prior drive that was in my system--mounted at the same location--did not need this treatment.
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May 3, 2010
Is it possible to allow a group/user to execute a command, where one of the parameters of the command is a group as well? example that does not work as intended:
Code:
Cmnd_alias SU=/bin/su -l %group1 This example works sortof, it treats the "%group1" literally. I know I can list out the "/bin/su -l <eachuser>", but as you can imagine that is impractical. In this example, I want people in group2(not shown for brevity sake) to be able to su to someone in group1
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Jan 24, 2011
I had mounted the pen drive then dismounted. I found out that by putting the pendrive into my sat receiver recorder with Ext3 mad the machine go crazy and I have had to sort that out before this! To say my wife was mad as hell is an understatement, but this was what I was told to do on AVForum.But now this leaves me in a predicament. I have no OpenSues booting. It goes through all the loading and then it asks me for the password with all the script showing and not the desktop. It says repair boot after this. Is there a simple way to resolve it? I think it was looking for the pendrive. Well I had to reformat that back to FAT.
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Jan 4, 2010
I was running a dual boot Ubuntu 9.10/Windows XP. I reformatted just the windows partition and re-installed it, and now I don't get the option at boot time of what OS I'd like to use...it just boots straight into Windows.
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Aug 2, 2010
As a back story, my Thinkpad had two partitions on it; one with Windows Vista and one with Windows 7. But it can't find the boot files, and thus isn't starting up (I'm getting a remove media or other devices error). So I'm just trying to get it working by trying to download the Ubuntu ISO on another computer, burning it to a disk and then booting it up on my Thinkpad.
I downloaded the 32-bit ISO of Ubuntu. It's ubuntu-10.04-desktop-i386, and it's 699MB, making me think that nothing is inherently wrong with the file I'm trying to burn. So I use InfraRecorder to burn it to an empty CD-R disk with 702MB of free space. (I tried using a DVD-R earlier, but switched over to CD-Rs after the DVD gave me the same problems that the CD-R is now giving me.) So I open up IR, find the ISO file, and burn it to the CD. Everything appears to work normally, and the disk pops out once it is done.
Now the Ubuntu website tells me that I can open up the CD-R file and check its contents, but I can't seem to do that, or at least on my computer. I put the disk back in (while running Vista on the computer I burned it on) and nothing happens, although I don't know if something is supposed to happen. I click on the DVD drive whilst in My Computer, and it pops out again (with the disk still in it) and tells me to insert a disk... whatever I think.
So maybe it's just not meant to work when already in Windows, but I put it into my Lenovo, boot from the CD/RW and am getting the same error. The specific error isn't really relevant, but rather the fact that it isn't even booting into Ubuntu. Clarifications: The integrity of the ISO file or the distribution are not the cause. I downloaded Linux Mint and encountered the same problem.
The computer burning the disk is not the problem. I used InfraRecorder and other burning software on two different computers, and both got to 100% and ejected the disk. The problem is that the disk is full, but not doing anything on either of the two computers I'm using to burn, and isn't booting up on my Thinkpad.
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