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Due to changes in the Linux file system drivers, Hal has posted an update to this post at https: However, sometimes you run into difficulties: Actually, in this case the "file" command can provide us with more succinct information: Looks like the image comes from a machine that was shut down ungracefully, and the ext3 file system driver wants to sync the operations in the file system journal before allowing the file system to be mounted.
In fact, the file system in the image is probably in a decent enough state that we could actually mount it, if only there were some way to coerce the file system drivers into not requiring a journal recovery. The Alternate Superblock Trick As most of you are aware, Unix file system metadata is kept in the superblock at the beginning of the file system image.
The superblock stores information like file system state clean or dirtylast mounted time and location, and pointers to the root of the file system, free block and inode lists, and the file system journal if any. For redundancy, the primary superblock is replicated throughout the file system.
That way if you lose the primary superblock for some reason, you can often recover the file system using one of the alternates, depending on the nature of the corruption.
However, the data in the primary superblock is not perfectly replicated to the alternates. The upshot is that if we tell the mount command to use an alternate superblock, the OS will allow us to mount the file system image without requiring a journal recovery.
The hard part is figuring out where the alternate superblocks live and then setting options for the mount command appropriately. Mounting With Alternate Superblocks The first step is to discover the location of the alternate superblocks.
The trick is to use mkfs with the "-n" option.Index of VMware Knowledge Base Articles Index of VMware Knowledge Base Articles ESX Server Clustering Notes Preventing the DHCP Server on a Virtual Network from Serving a.
When installing Ubuntu on Hyper-V, disk becomes read-only. recovery required on readonly filesystem EXT4-fs (sda1): write access unavailable, cannot proceed EXT4-fs (sda1): couldn't mount as ext3 due to feature incompatibilities EXT4-fs (sda1): couldn't mount as ext2 due to feature incompatibilities EXT4-fs (sda1): INFO: recovery required.
or IR Receiver. which is a virtual intranet Troubleshooting Migration compatibility error: Currently connected network interface uses urbanagricultureinitiative.comto preserve the feature requirements for its guest OS Linux Web Access User Names Cannot Begin with a Hyphen Single Sign On (SSO) Occasionally Fails When Using Passwords with Fewer than Six.
Jul 06, · Hi, I am running which I got to by upgrading using the system update funciton. was installed using wubi within windows. today, i installed the latest updates that ubuntu prompted me with. now, the machine does not boot properly. i choose ubuntu at the boot chooser, then it sits at a grub .
Dec 19, · > connected to the tor network. but from appvm i get no access to tornet or the > internet, do i have to change the settings of the tor-appvm in a different way > or to configure the firefox or is that handled by qubes?
Oct 21, · [ ] EXT3-fs: write access unavailable, cannot proceed. How can I fix the issue so I can use the disc again (with out loosing the data) .