Is it possible to encrypt the Entire root file system using LUKS.I am currently using Ubuntu 10.4 LUCID.After several hours of Google ,most of the articles were focusing to "Encrypting a drive/removable media ".. My aim is to encrypt whole File system which is currently using.
My Concerns, How to Encrypt a running file system? Will it lead to data loss?
I work for a company that makes portable devices running Linux and I was recently asked to make the underlying file system read-only for "security" purposes. Since the distribution is based on LinuxFromScratch, I know that very little writing happens at run time. So, even if the device runs on a usb flash device, I doubt that putting the root file system RO will be that beneficial. I am actually more concerned about a process actually breaking because it cannot open a file in RW mode than a process going rogue and filling the root file system with log files, etc. I'd really like to ear what kind of advantages disadvantages there really is with read-only file-systems.
View 6 Replies View RelatedI want to encrypt Full partition instead of creating a file and encrypting it, and also want to move this disk to another server. do i need some files also (that hold keys) with my self on new server. i am using FC11.
View 2 Replies View RelatedI am getting an error while booting my linux system: Can't mount root file system.Boot has failed, sleeping forever.OS is Red hat enterprise linux 6, With Intel P4, 1 GB Ram, 120 GB IDE hdd seagate. it was working fine from last 4 days. from today morning this is giving error. only mysql & apache is installed in it.
please suggest is there any way to repair the root & boot volumes. waiting for valuable reply.
im trying to prepare my partitions for fresh installation. The partition manager didnt list anything with an error message that said:Quote:No root file system is defined. Please correct this from the partitioning menu?This is what Gparted displays Quote:
/dev/sda1 ext3 /tmp/boot
/dev/sda2 unknown
/dev/sda3 ext3 /tmp/opsys
Information on the net seems very sparse or outdated for how to go about booting to a RAM disk. I need to be be able to boot a PC without a hard drive in it. I want to be able to PXE boot a PC and supply it with a RAM disk image that also contains the contents of the root file system (obviously stripped down enough to keep the file size small and the boot up time fast).What I have gathered so far is that I need to extract the contents of the initrd.img file, add files as necessary, and repackage the initrd.img file. What I get confused on is how to configure the kernel line parameters to tell it to boot to RAM and not the hard drive and how to go about modifying the init script in the initrd.img to not switch to the hard drive for the root file system. I can't find anything on the net that describes concrete steps on how to go about accomplishing all of this. I'm aware of the existence of Live CD's, but I need to be able to boot the PC without relying on a hard drive, CD, or any other external media. It needs to get all of its contents from the PXE boot server and boot to RAM only. I have the PXE boot side configured successfully. Also, putting the root file system on a NFS share is also out of the question.
View 8 Replies View RelatedI've been using *Unix systems for many years now, and I've always been led to believe that its best to partition certain dirs into separate FileSystems, off the main root FS.
For instance, /tmp /var /usr etc
Leaving as little as possible on the main / system.
Its so that you don't fill up the root system be accident, by some user putting in too bigger files in /tmp, for example.
I would presume that filling the / system would not be too good for Linux, as it would not be able to write logs and possibly other things that it needs to.
I believe that if root gets full, then there is something like a 5% amount saved for just 'root' to write to, so that it can do its stuff.
However, eventually, / will become full, and writes will fail.
On top of this, certain scripting tools, such as awk, use the /tmp/ system to store temp files in, and awk wont be able to write to /tmp/ as its full, so awk will fail.
However, I'm being advised that there is no need to put /tmp /var etc onto separate FSs, as there is no problem nowerdays with / filling up. So, /tmp /var /usr are all on the root FS.
I'm talking about large systems, with TBs of data (which is on a separate FS), and with a user populations of around 800-1000 users, and 24/7 system access.
I have a Rad Hat 7.0 old Linux system that crashed due to power failure. On reboot the system goes to Checking Root File System and does 92.5% check and fails.
Here are the error messages I get.
I don't know what to do at this point so I say yes and it goes in some wierd mode.
SO I ran fsck manually but I get an error PARALLEIZING FSCK.
I can't fix the corrupted stuff for the system to reboot. THIS IS VITAL.
I need to customize linux kernel root file system for embedded linux system. During compile time, for root file system I am able to create different user/group ex: "gnumuzic/Muzic". But I want to give access to group "Muzic" to some folders like /dev/nexig during compile time.
View 1 Replies View Relatedstandard Linux installation utilities split the root file-system and the home file-system on two separate but relatively equal-sized partitions? For example, when I put fedora on an 80GB disk, it automatically gave the root file-system 32GB and home 30GB and the swap 8GB of space. However, since my home file-system has a directory with 28GB of files in it, why is my root file-system reading 100% usage? Is the home FS overlaid on top of the root FS? Is there an advantage to doing this? I just made a boot partition (50mb or so), a root partition (90% of the disk space) and a swap (4%-5% disk space).
View 5 Replies View RelatedI am using Gentoo Linux and for a while now, the root file system is mounted read-only on booting. For obvious reasons, this is quite annoying as most services do not start up correctly (I do not use a separate file system for /var). After the system is up, I have to log in, remount the root file system read-write, fix /etc/mtab, mount all other file systems in from /etc/fstab and then start up all the missing daemons. I know that there are ways to make a system run properly with a read-only file system, but I would rather restore the old behaviour of a writable root file system.
The strange thing is that after running mount / -o remount,rw, the file system is mounted in writable mode without any errors. I suspected some problem with fsck, but now I have disabled automatic file system checks on the partition (tune2fs -c0 -i0).When I run dmesg, only these lines mention the partition at all, although I am not sure if not something gets lost because /var/log is not writable:
EXT3-fs (sda5): mounted filesystem with writeback data mode</code>
EXT3-fs (sda5): using internal journal
The line in /etc/fstab looks like this:
[code]....
I have a fedora 14 system. I booted a suse installation that existed on an external harddisk and wanted to access my original fedora user home directory using non-root preveliges(so that i can use the gui file manager), so I searched on the internet and made a command to (chown -R mysuseUser:Users *) thinking that it will only affect the current mount permissions (not permenantly) put it did change the file system... i realized and cut it in the middle but some corruption was done. and then my fedora gui login screen was missing any username. tried to fix that by going to my fedora and executing chown (once using --from , and once without --from) and changed all root file system recursively to be owned by root and then changed my /home/myuserName ownerships all recursively to be owned by myUserName after that... still the system is corrupted..... when i login to genome i have several crash messages (gdiskutility is one of them) and networking is disabled (i cannot connect to neither wireless nor wired nor wireless broadband). also when i plug USB/esata harddisks nothing happens
now i can only do work from my external harddisk`s suse linux. what can i do to restore my system ? I have a previous dd image of my entire harddrive, but it is more than one month old and also I don`t want to do a restore to my entire harddrive.. can i clone some ownerships from files in dd image to their corresponding ones in my fedora system ? if so, how can i even mount a dd image ?
From Ubuntu 11.04 installer. What does this mean? how do I do it correctly?
View 11 Replies View RelatedI can use Ubuntu from my flash drive, but I want to install it in a partition alongside windows. When I try to do this, I come to an 'allocate drive space' window, but whatever I do I get the error message: 'No root file system is defined. Please correct this from the partitioning menu.' I just don't know what this means, or what to do next. I'm loathe to ditch windows, and I don't want to have to use a flashdrive all the time.
View 3 Replies View RelatedIn the boot process of Linux we have the initrd that is a root file system and is mounted before the real root file system become ready to mount. What is the procedure of mounting? What should happen so we can say that file system is mounted? And another little question why we say ¨root¨ file system instead of just file system?
View 2 Replies View RelatedI put a formatted drive in my desktop so I could run Ubuntu on it. When I went to install, it read "No root file system is defined". What gives?
View 2 Replies View RelatedMy linux distro is CentOS 5.3. Today I edited /etc/sysconfig/readonly-root and set "READONLY" to yes, now my /etc/sysconfig/readonly-root file is like this:
# Set to 'yes' to mount the system filesystems read-only.
READONLY=yes
# Set to 'yes' to mount various temporary state as either tmpfs
[code]...
well i was messing with the Gparted live disk and i deleted a small partition of about 6 megs (yes megs). trying to be efficient doing some cleanup of course. but when i rebooted my Fedora 10 i get the black screen saying," could not find the file system. /dev/root". ok, i am useing the fedora 10 live cd now. can i copy that file to my hard drive from the cd? or do i need to reinstall Fedora?
View 1 Replies View RelatedI have worked in linux for a long time but never managed the system until I got my own server, which is running Fedora 14. I have a 3 TB Drive and apparently can only handle 2 TB. At least the Disk Analyzer is telling me that 2TB is 100% max capacity. Also viewing disk analyzer, I am only using 50GB of my 2TB but I am out of memory in the Root file system. If I run df -h, I get he following:
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_dev1-lv_root
50G 40G 7.2G 85% /
[code]....
Trying to install from netbootin...gives me that error.
View 4 Replies View RelatedI have been using Ubuntu 9.10 Desktop version for around 1 month then i stoped using after installing windows 7, as I knew that there were the 10.04 version coming. So when it was released i went to torrent download the file and burned it on a cd. After that i insert the cd and use the wubi installer in there as i want to install them side by side. so after installing ubuntu i restarted the system and got into it. After a few minutes it appeared this error message "Not root file system is defined. Please correct this from the partitioning menu." So i was expecting it to be downloading problems. I went on to ubuntu website requested for a CD and it came today. So i inserted the cd did the same thing again.
View 9 Replies View RelatedIs it possible to run fsck on the root file system?
My Ubuntu 10.04 seems to be checking it's fs at boot...
It shows that the file system is in use and can get severely damaged!
Or the only possibility is to run it from a live CD?
My current installation setup has a separate partition for /, /boot, /home, /tmp, /usr, and /var. The problem I have is the root partition / is 98% full (4.3GB full). Cleaning temp files and log files won't help since they are on their own partition (and clean). I've removed all but two linux-images. Linux images seem to run at a size of roughly 105M. My root partition is 4.6GB. I can't seem to find any other options for cleaning up space on this partition. I have no idea what is taking up 4.6GB of space.
Disk Usage Analyzer has not been helpful since I have not been able to reconcile 4.6GB of memory with what it claims the total size of the remaining directories occupy. I've tried localepurge, gtkorphan, apt-get clean, apt-get autoclean, apt-get autoremove. I've removed all packages listed under Status -> Not Installed in the package manager. My root file system is still 98% full (4.3GB full).
Classic partition problem apparently. What do I do? the 11.04 wubi doesn't give a lot of installation options, so i just selected C drive, and gave it 10GB of space. instilled it, and when it goes to the desktop menu, that pop up appears saying No root file system is defined. Please correct this from the partitioning menu
In dual booting with XP. what do I do?
I'm trying to install 11.04 and get the error warning in the title. It says "Please correct this from the partitioning menu."How do I do that?I don't see any options for that.Puppy will already boot from that device and has grub installed.
View 9 Replies View RelatedI try to encrypt root file system on Opensuse 11.1 and I have found up to two possibilities.
1. [url]
2. [url]
In the first case, i have a Problem with entering password, for each partition on encrypted disk, i must enter my password.(For 3 partition 3 times)
And in the second version to get i nowhere.
Code:
I would like to know if there is a way to do an unattended check on the root file system on my servers, *and* send emails in case of errors.
I know you can schedule a root file system fsck during boot time - but the root file system will be mounted read-only - so if fsck finds any problems - it can't email away a warning, or write the result to a file - or can it?
Essentially I would like my servers to do a self-check of the root file system periodically - and to email me if it fails. I just can't think of a way to get it done.
I have a problem that is probably simple, but have not yet found the answer on any forums or by Googling. First my system specs:Tyan 2610 motherboard w/ 2 x PIII 9334 gig PC133 SDRAM
1 x 5 gig hd (system)4 x 500 gig hds w/ 3Ware 7500 controller set to RAID 5, (1.5 TB) mounted as /homeCentOS 5.3 running my smb and nfs mountsMy problem is that I have run out of space on my / (root) file system, (the 5 gig). Since I am planing to rebuild my file server with larger hard drives, (2 x's 60 gig SATA's set to RAID 1, 6 x's 1.5 TB at RAID 5), within the next 2 months, I would like to try to clean out any unneeded crap rather than adding a hard drive and expanding my root file system. I have done the following:
Removed old unused kernels
cleaned up /var/log/
cleaned up /tmp
[code]....
I have had this problem since yesterday, I've looked around at previous archives, but I can't seem to find anything that works. When I boot up, the screen gives me the following prompt:
Code:
Mount of root filesystem failed.
A maintenance shel will now be started.
CONTROL-D will terminate this shell and reboot the system.
Give root password for maintenance:
[Code]....
So I have an external hard drive (wd passport) that I want to install ubuntu on. I created 100gb partition via diskutility (fat32) and it seems I can't install ubuntu on this partition.
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