I have a server with two LUN's mounted from a local SAN. I have a configuration file in place for the vendor software we're using (splunk) that defined the size of the second LUN, but I had accidentally configured it as 6GB larger than it actually was. This morning I came in to see whistles going off about the error. It has been fixed, and the Splunk server process has been restarted to make use of it. It should be clearing out data, and it appears to be doing so. However When i look at the output of DF, I see something weird:
Filesystem Size Used Avail Use% Mounted on /dev/cciss/c0d0p3 507G 4.0G 477G 1% / /dev/cciss/c0d0p1 97M 19M 73M 21% /boot tmpfs 36G 0 36G 0% /dev/shm /dev/mapper/hot_group-lvol0 148G 128G 14G 91% /splunk/hot /dev/mapper/cold_group-lvol0 837G 797G 0 100% /splunk/cold
As you can see DF is showing that the total size of the disk is significantly larger (40GB than the used disk. However it still shows 0 bytes available. Can anyone explain this?