Truncated file on posix mount

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I have a ceph posix mount for openstack instances, and have found some of my kernels truncated. It looks rather random, and I have not found a way to reproduce it, but it will happen from time to time with normal use.

the 5e...aa checksum is the correct one.

root@t06-16:/var/lib/nova/instances# md5sum */kernel
3e0a48130ddb8bfe88239df05c073a0b  instance-00000001/kernel
5e9463bd77757a3889a1d9758b2b94aa  instance-0000000f/kernel
5e9463bd77757a3889a1d9758b2b94aa  instance-00000010/kernel
5e9463bd77757a3889a1d9758b2b94aa  instance-00000011/kernel
5e9463bd77757a3889a1d9758b2b94aa  instance-00000012/kernel
5e9463bd77757a3889a1d9758b2b94aa  instance-00000013/kernel
3e0a48130ddb8bfe88239df05c073a0b  instance-00000014/kernel

root@t06-16:/var/lib/nova/instances/instance-00000001# stat kernel
  File: `kernel'
  Size: 2097152         Blocks: 4096       IO Block: 4194304 regular file
Device: 0h/0d   Inode: 1099511627899  Links: 1
Access: (0664/-rw-rw-r--)  Uid: (  109/libvirt-qemu)   Gid: (  111/     kvm)
Access: 2012-06-13 11:56:56.462433802 +0200
Modify: 2012-06-04 11:47:17.730781000 +0200
Change: 2012-06-04 11:47:17.730781000 +0200
 Birth: -

root@t06-16:/var/lib/nova/instances/instance-00000010# stat kernel
  File: `kernel'
  Size: 2424448         Blocks: 4736       IO Block: 4194304 regular file
Device: 0h/0d   Inode: 1099511627989  Links: 1
Access: (0664/-rw-rw-r--)  Uid: (  109/libvirt-qemu)   Gid: (  111/     kvm)
Access: 2012-06-13 09:44:03.779892491 +0200
Modify: 2012-06-13 09:43:47.178125000 +0200
Change: 2012-06-13 09:44:00.020102878 +0200
 Birth: -

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/S.
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