Like the topic says my vmfs ran full a couple of weeks ago and i've been trying some stuff on and off again to remove some guests so that i can get some free space again.

When i access the machine from VI the "Free space" is empty and if i try to boot a guest i get an error stating "Could not power on VM: No swap file" but there is infact a swapfile present, just no space left on the vmfs probably making it impossible to do any writing to it. So i right clicked on a guest and choose "delete from disk" and the machine goes away but still no available diskspace. I then proceed to browsing the storage using VI to try and manually remove the files with just a plain simple error stating that it cannot delete the file specified. So lastly i ssh to the server and go into /vmfs/volumes/491ae4a0-a3e876b6-0cdf-001aa028e698/VeeamBackup and i try to delete the guest using rm and the output i get can be seen below.

root@vmware2 VeeamBackup# rm -rf linux-www\(vm-47\)/
rm: cannot remove `linux-www(vm-47)//replica.vbk': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www.vmx': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www.vmsd': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware-7.log': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware-8.log': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware-3.log': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware-4.log': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware-5.log': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware-6.log': Input/output error
rm: cannot remove `linux-www(vm-47)//vmware.log': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www-flat.vmdk': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www.vmdk': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www_1-flat.vmdk': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www_1.vmdk': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www.vmxf': Input/output error
rm: cannot remove `linux-www(vm-47)//linux-www.nvram': Input/output error
rm: cannot remove `linux-www(vm-47)//2008-11-22T172955.vrb': Input/output error

What could cause this behavior? is it really so that when the vmfs gets tanked up and there's no space left it just goes bananas or is this something more serious? The machine is a DELL PowerEdge 2950 with 5x136gb SAS drives in RAID5 and it is reported to be healthy.