Hi,
I am running F17 with / and /boot mounted as ext3. I want to convert / to ext4 to gain some performance, but I still have GRUB in my MBR installed from the F15 times (and GRUB2 package installed but unused). I had bad experience with GRUB2 and don't want to switch to GRUB2 yet.
Will GRUB be able to boot my system after the conversion?
This article is meant to serve as a guide for migrating a live system from ext3 to an ext4 filesystem, including migration of files to use extents, a major feature in ext4. It describes the entire migration procedure, including common pitfalls involving a migration of a live system, as opposed to doing a fresh install.
How To Convert An ext3/ext4 Root File System To btrfs On Ubuntu 12.10
ext3 and ext4 file systems can be converted to btrfs. For non-root
file systems, this can be done online (i.e., without reboot), while for
root file systems we need to boot into some kind of rescue system or
Live CD.
Most docs on disabling/creating the ext4 journal for root involve a reboot. If we:
turn off the journal via tune2fs
fsck the filesystem
turn the journal back on via tune2fs
fsck the filesystem
then reboot
Will that effectively re-create the journal? In this specific case we have a corrupted journal we wish to re-initialize.
Yet another filesystem question. I wanted to use a USB drive that I hadn't mounted for a month or so and was surprised by the fact Ubuntu was unable to mount it. I looked it up in the disk utility and it said it discovered a device with 17 MB instead of 2 GB.
The partitions that contains the ext3 and ext4 filesystems reserve the 5% of the total size of the filesystm by default. The idea here is even when you run out of disk space, the root user should still be able to log in and system services should still run.
I am trying to boot a linux kernel 3.7.0 on virtualbox and it keeps telling me the same message: "No filesystem could mount root tried ext3 ext4 vfat fusebk". I put append root=/dev/sda in my isolinux cfg file even though there is no file named /dev/sda.
I have seen that Ubuntu 11.10 is offering Ext4 as default file system. As I have googled some time on ext4 and found that ext3 is quite stable that ext4 as it still has some bugs.
Even the Ubuntu Documentation is referring Ext3. Link
So, I would like to know whether Ext4 is currently stable on 11.10 or not than Ext3
I have a relatively new install of Ubuntu 9.10. I have two hard drives /dev/sda1 & /dev/sdb1 both ext3. Today for the first time a filesystem check was run on /dev/sdb1 but it ran after boot instead of before. I thought filesystem checks had to run in read only mode, before the filesystem was mounted.
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