I'm on Slackware-current and I've got a /dev/sda1 (the root partition) formatted as ext4. The output of /etc/fstab is:
Code:
/dev/sda2 swap swap defaults 0 0
/dev/sda1 / ext4 defaults 1 1
[Code]....
I have a usb flash drive and according to sources I found out after the fact that I should have used ext2 instead of ext4 due to the extra write operations.
Is it possible to convert the ext4 root partition to ext2 or do I need to backup, reformat, and restore?
I have dual boot system..i.e, windows XP and ubuntu 9.10(insatlled side by side). when i try to boot ubuntu, Im gettin sh:grub > prompt
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I am getting something like this.. root mount file system failed.. ext2 ext3 ext4 ....... kernel panic message and hanged at kenelthreadhelpper+ what can i do.. I cant reinstall ubuntu again.. Because I have installed nany application there..
I got a problem booting ubuntu 10.4 RC but i solved it by replacing root partirion uuid in grub boot menu then I disapled totally uuid passing to linux from /etc/default/grub . but something else i noticed why grub choosed insmod=ext2 why not ext4 specially I use now ext4 .I tried by editing the grub boot menu replacing "insmod=ext2" by "insmod=ext4" it booted and the three lines error during booting that i used to see them science ubuntu 9.10 totally disappeared . really I dont understand can anybody explane for me.and if what i did was right ,can anybody tell me how to make grub always and permenantly detect ext4 as ext4 not as ext2.
View 6 Replies View RelatedI run an upgrade and an update on a lucid lynx beta 2. --- got no problems. but about the filesystems i have some questions because it seems for me that at every system boot the system will run an fsck. somtimes it's shown up, somtimes not. but in /var/log/messages and in syslog
I have always following messages ( occured in beta 2 too ).
But first before i continue - here my disk layout:
And here my filesystem types:
This is my problem because those values are seems to be static ! ( note: this partiton is mounted but not in use ) and last not least: the drive is an external usb scsi disk. but on the other side lucid lynx is running fine on my box.
I want to install Ubuntu to a USB Flash drive (so I have my Desktop everywhere and can customize it as I want). I'm still choosing what's the best filesystem for the USB; Ext2 with no journaling or Ext4 with journaling but performance increase? I know that journaling will probably reduce the life of the USB flash drive dramatically, so is Ext2 the obvious choice? Or is it a bad idea to install Linux (Ubuntu probably) on a USB Flash drive? I tried running a live CD from the USB drive, but it wasn't very customizable - which is the point of carrying my OS with me.
View 3 Replies View RelatedI have two ext4 partitions: one with Ubuntu 10.10 64-bits and the other just for storing files.When I log on to Ubuntu, my second partition is not mounted. Shouldn't Ubuntu mount my second partition by default (since it recognizes it as ext4)?If it should, why is this happening to me?If it shouldn't, how can I get my second partition to be mounted at startup? Should it be by using the same solution provided by prayag_pjs (first reply)[URL]
View 1 Replies View RelatedI upgraded F10 to F11 successfully.
Then I convert the / partition filesystem by the following steps:login as root user in multi user mode read [url], and execute tune2fs -O extents,uninit_bg,dir_index /dev/mapper/VolGroup01-LogVol00 modify /etc/fstab, change the type of / to ext4
reboot
(because fsck say running it on a mounted filesystem can cause filesystem damage, so i decide to reboot to single user mode first. maybe it's a mistake here) try to boot F11 to single user mode, failed
reboot from a SystemRescueCD-1.2.0 LiveCD
run e2fsck -fpDC0 /dev/mapper/VolGroup01-LogVol00 in SystemRescueCD-1.2.0 LiveCD, no error reported
reboot
try to boot F11 normally(multi user mode), but it failed at: EXT3-fs: dm-0: couldn't mount because of unsupported optional features (40).
I tried rescue mode of Fedora-11-i386-netinst.iso after these steps above. The / partition can be found and mounted to /mnt/sysimage correctly. I can read/write files in / partition, and i can even yum new softwares in rescue mode, but it just can't be mounted when booting.
EXT2-fs: sda4 couldn't mount because of unsupported optional features (240)
EXT3-fs: sda4 couldn't mount because of unsupported optional features (240)
When I boot Slackware13.1 it shows this 2 messages but it boots, my fstab says:
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My file system is ext4 and the root partition is sda4. Why it is happening?
I just rebuild the kernel for slackware 13, everything works, but root file system which is ext3 is mounted as ext2. Normally I've build ext3, ext4 and so on as modules, not in the kernel... but if I do this, then the kernel mounts the file system as ext2, which is build in the kernel. I also modified rc.modules so I can make sure that ext3,ext4,jbd are loaded, but it doesnt work.
View 2 Replies View RelatedI installed 2 new hard disks and created one ext 4 partition on each of them. After rebooting busybox tells me that there is no /sbin/init.
View 7 Replies View RelatedI was unable to boot into my system after I'd just shut it down, so I tried repairing it using my installation media... only to find that though my root Ext4 fs on sda6 was corrupted & *supposedly* repairable, the cd could not do so for some reason! All I can get is a command line, saying something about the root fs being mounted as read only, and I have no idea how to resolve this. I cannot afford to loose ANY of the data I have on here.
View 2 Replies View RelatedWith the release of CentOS 5.5 ext4 is considered stable in this distribution so I decided to migrate to it. Luckily I started from migrating fresh server with CentOS 5.5 using some instruction I found on the internet. I think I shouldn�t say, that I screwed the whole thing up ;) After about 6 hours cursing, kicking, and crying I solved the task and figured the correct sequence of actions. The small problem with migrating root partition is that you can�t unmount it BTW.
During migration task, I found, that CentOS 5.5 rescue mode is somewhat broken a little in terms of ext4 support. It can mount ext4 partitions successfully. But its e2fsprogs package (tune2fs, e2fsck etc.) doesnt see ext4 partitions and say, that superblock is corrupted on a partition once is converted to ext4 (at least it did it for me. May be I should force filesystem type with -t ext4 switch?). Keep in mind, that if you screw your system up too badly, you will not be able to run tune2fs and e2fsck on it from rescue modeBut you will still able to mount it if it is not corrupted badly. In all below examples,Boot your system normally and login as root. Upgrade kernel if you wish (I usually use yum upgrade to upgrade all on new machines). Then upgrade/install some other packages
Running RHEL 5 in a VMWare image, needed to add a second virtual disk, which worked fine - added it in VMWare, used fdisk and mkfs to format and mounted it as /SI50 so I could then access it. Did all this as root of course. Now I have created a new user and when I log in not only do I not see the new drive, but if I try and mount the drive I get an error "only root can do that". I absolutely have to see this drive as this new user so mounting it only for root to see is no good at all. I'm sure I'm fundamentally doing something wrong here, because obviously the way drives appear in Linux is completely different to windows.
View 2 Replies View RelatedI hv installed debian (lenny). My problem is that sometimes it loads perfecly, but on other times it gets stucks at mounted the root. and waiting for the root. wht shd i do?
View 14 Replies View RelatedWhen my husband and I installed Open SuSE 11.2, we made the mistake of telling it to have my other 2 hard drives owned by root. So now, whenever I want to open my other 2 hard drives, I have to type in the root password. How can I change this?
View 9 Replies View RelatedI have seen this message more then once and I cannot find information that is understandable to me and which is recent, so maybe the situation has changed with newer kernels/file systems. My question: is this normal behavior with linux and beside from increasing the number of start-ups after which this check runs, is there another way to avoid this? Isn't there a way to do a check after the os has been loaded?
View 14 Replies View RelatedI created 3 partitions on my usb stick, one is vfat, one ist ntfs and one is ext4.And i formated them like this:
Code:
mkfs.vfat -F32 /dev/sdg1
mkfs.ext4 /dev/sdg2
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I've a flash drive that it's partitions formatted as fat32, ex4 and encrypted ext4. It works fine on the system that I've formatted it on, but when I try to use it on my other Linux distributions I get these problems:
* ext4 partition accessible by root only.
* after entering my pass-phrase I get
Code: /dev/mapper/udisks-luks-uuid-***** uid1000 is mounted What I'm asking for is a way to create the ext4 file system without being attached to some UID and to be accessible by any user.
I'm having some problems with errors reported by fsck on my EXT4 root partition on my Ubuntu 10.10 installation... If I run fsck I get the following output:
Code:
# fsck -n /dev/sda1
fsck from util-linux-ng 2.17.2
e2fsck 1.41.12 (17-May-2010)
Attenzione! /dev/sda1 montato.
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Today I was notified on my netbook that my root folder is running out of space. When I ran the disk analyzer, it showed that most of the space is going towards the videos folder in /media/win7. My ~/Videos folder is symbolically linked to the videos folder on my Windows partition, which is mounted in my fstab using ntfs-3g under /media/win7. The question now is, shouldn't the videos only exist in the windows partition? /media/win7 usage shouldn't affect space usage in my root folder right?
View 6 Replies View RelatedI don't know why but every time I plug my iPod it gets mounted automatically as root and therefore I can't write anything in it. I mentioned this issue on the #suse irc channel posting mount output:
eugenio@openSUSE:~> mount
/dev/sda7 on / type ext4 (rw,acl,user_xattr)
proc on /proc type proc (rw)
sysfs on /sys type sysfs (rw)
debugfs on /sys/kernel/debug type debugfs (rw)
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I read some posts about editing the fstab file but I'm not really sure how to do this (if this is the solution) and I believe this could have worked on earlier versions (where HAL was used) Is there anything I can do to make opensuse mount my ipod automatically with full access to normal users?
I've just installed Slack 13.1, this was a "clean" install. All seems to be working well except for the dvd-rw, but this is a show stopper, if it doesn't get resolved in a few days I'll have to go back to 13.0.
The drive is detected correctly, but if a cd is mounted it gets errors, and is unable to set it up (it doesn't appear on the desktop).
Here is the info from dmesg:
ata3: SATA link up 1.5 Gbps (SStatus 113 SControl 300)
ata3.00: ATAPI: TSSTcorp CDDVDW SH-S223Q, SB03, max UDMA/100
ata3.00: configured for UDMA/100
scsi 2:0:0:0: CD-ROM TSSTcorp CDDVDW SH-S223Q SB03 PQ: 0 ANSI: 5
sr0: scsi3-mmc drive: 48x/48x writer dvd-ram cd/rw xa/form2 cdda tray
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I 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:
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Is it possible to forbid a non-root to umount a partition that was mounted via fstab-entry?
View 2 Replies View RelatedI compiled a kernel using a previous kernel config after I switched to the ext4 file system. Previously it was using ext3 and the kernel compiled and ran fine. I added support for ext4 to the config but when I went to boot I had a kernel panic. The error was "kernel can't mount vfs on (8,5)". Root is on sda5, I don't know what the 8 is. I started over, using mrproper and made a new config, but got the same error. I created an initrd with the ext4 file system but then the kernel said it couldn't mount root on ext3 because of unique options. (something along those lines) I booted back into the default kernel and saw that it had a similar error right after the bios check, but it loaded fine. I'm wondering why the kernel is saying that the ext4 file system is ext3.
View 11 Replies View RelatedMis-allocated 10g instead of 30g to /var/lib/mysql and realized mistake After Fresh Install and upgraded all servers. Using Slackware13.1, Xfce did some googling wondering if its possible to resize the above partition with fdisk. Read some things about gparted and wonder if it will work using Xfce.. i've never use kde or gnome. There is also mention of using live cd; I have no experience with any of the mentioned tools; just fdisk to partition and install. What is the best or simplest way to backup & restore; (I do have an empty sdb 160g but don't want to get into complicated raid or LVM setups right now because I still have to learn howto backup & restore do data to the point where I feel comfortable with it)?
Current setup: sda 160gb Hdd used 73.5 for following partitions: sda1 512m /boot; sda2 Extended Rest of Hdd; sda5 1280m /swap; sda6 8g /home; sda7 2g /; sda8 8g /usr; sda9 8g /usr/local; sda10 10g /var; sda11 10g /var/log; *sda12 10g instead of 30g /var/lib/mysql; sda13 10g /opt; sda14 5g /tmp Haven't configure mysql... so /dev/sda12 is empty except for system disk data the same goes for /dev/sda13 /opt & /dev/sda14 /tmp
when i try to change permission for any file under mounted ntfs partitions (without any errors) it remains the same after changing.
#cat /etc/fstab
Quote:
/dev/sda3 swap swap defaults 0 0
/dev/sda4 / ext4 defaults 1 1
/dev/sda1 /win/C ntfs-3g fmask=111,dmask=000 1 0
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after i update to -current a few days ago. my slack partition cannot be mounted...and after that it's show 'kernel panic'.before i experience that problem, i have encounter an odd problem after i update my slack to -current, after i lock my screen and i want to unlock it, i cannot unlock it, it says 'i must kill kscreenlocker manually'. After that i reboot using root account. then i cannot enter my slackware again.kernel panic in boot screen.Kernel panic: VFS : Unable to mount root fs (8,2)
View 5 Replies View Relatedthe permission remains the same after changing it without any errors
# cat /etc/fstab
Quote:
/dev/sda3 swap swap defaults 0 0
/dev/sda4 / ext4 defaults 1 1
/dev/sda1 /win/C ntfs-3g fmask=111,dmask=000 1 0
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