I had some unknown issue with my old EC2 instance so that I can't ssh into it anymore. Therefore I created a new EBS volume from a snapshot of the old volume and tried to attach and mount it to the new instance. Here is what I did:
- Created a new volume from snapshot of the old one.
- Created a new EC2 instance and attached the volume to it as
/dev/xvdf(or/dev/sdf) SSHed into the instance and attempted to mount the old volume with:
$ sudo mkdir -m 000 /vol$ sudo mount /dev/xvdf /vol
And the output was:
mount: block device /dev/xvdf is write-protected, mounting read-onlymount: you must specify the filesystem typeNow, I know I should specify the filesytem as ext4 but since the volume contains a lot of important data, I cannot format it through $ sudo mkfs -t ext4 /dev/xvdf. Still, I know of no other way of preserving the data and specifying the filesystem at the same time. I've searched a lot about it and I'm currently at a loss.
By the way, the mounting as 'read-only' also worries me but I haven't look into it yet since I can't mount the volume at all.
Thanks in advance!
Edit:
When I do sudo mount /dev/xvdf /vol -t ext4 (no formatting) I get:
mount: wrong fs type, bad option, bad superblock on /dev/xvdf, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or soAnd dmesg | tail gives me:
[ 1433.217915] EXT4-fs (xvdf): VFS: Can't find ext4 filesystem[ 1433.222107] FAT-fs (xvdf): bogus number of reserved sectors[ 1433.226127] FAT-fs (xvdf): Can't find a valid FAT filesystem[ 1433.260752] EXT4-fs (xvdf): VFS: Can't find ext4 filesystem[ 1433.265563] EXT4-fs (xvdf): VFS: Can't find ext4 filesystem[ 1433.270477] EXT4-fs (xvdf): VFS: Can't find ext4 filesystem[ 1433.274549] FAT-fs (xvdf): bogus number of reserved sectors[ 1433.277632] FAT-fs (xvdf): Can't find a valid FAT filesystem[ 1433.306549] ISOFS: Unable to identify CD-ROM format.[ 2373.694570] EXT4-fs (xvdf): VFS: Can't find ext4 filesystem