I have an EBS backed EC2 instance, which doesn't start The system log says:
[ 0.881605] Write protecting the kernel read-only data: 1196k
Loading, please wait...
%GCouldn't get a file descriptor referring to the console
Couldn't get a file descriptor referring to the console
Couldn't get a file descriptor referring to the console
Couldn't get a file descriptor referring to the console
Couldn't get a file descriptor referring to the console
Couldn't get a file descriptor referring to the console
Couldn't get a file descriptor referring to the console
Begin: Loading essential drivers... ...
[ 1.006136] fuse init (API version 7.12)
Done.
Begin: Running /scripts/init-premount ...
Done.
Begin: Mounting root file system... ...
Begin: Running /scripts/local-top ...
Done.
Begin: Waiting for root file system... ...
Done.
Begin: Running /scripts/local-premount ...
Done.
[ 1.320965] kjournald starting. Commit interval 5 seconds
[ 1.320984] EXT3-fs: mounted filesystem with writeback data mode.
Begin: Running /scripts/local-bottom ...
Done.
Done.
Begin: Running /scripts/init-bottom ...
Begin: Starting AppArmor profiles ...
chroot: cannot execute /etc/apparmor/initramfs: No such file or directory
Failure: AppArmor profiles failed to load
Done.
[ 3.741464] EXT3-fs warning: checktime reached, running e2fsck is recommended
[ 3.742696] EXT3 FS on sda1, internal journal
init: console-setup main process (2139) terminated with status 1
%Ginit: plymouth main process (341) killed by SEGV signal
init: plymouth-splash main process (2431) terminated with status 2
init: squid main process (2493) killed by ABRT signal
cloud-init running: Sun, 02 Dec 2012 20:36:06 +0000. up 5.77 seconds
init: ureadahead-other main process (2511) terminated with status 4
swapon: /dev/sda3: swapon failed: Device or resource busy
mountall: swapon /dev/sda3 [2513] terminated with status 255
mountall: Problem activating swap: /dev/sda3
init: ureadahead-other main process (2522) terminated with status 4
mountall: Disconnected from Plymouth
Close
Does this mean there is a problem with my sda1 disk? I have a snapshot that I could use instead.
There is definitely a problem with the instance as the system isn't able to mount swap or your apparmor profiles.
Is this a new instance from the community AMIs or a custom built one?
Using your snapshot would be advisable until you can determine what caused this instance to not be able to mount swap.