We've noticed a problem with one of our volumes on netapp filer. It seems that volume is full, NetApp informs, that volume is using or reserving 100% of space (0% of inodes) - this is shown as the warning. Problem is, it does not looks this way. Volume size is 190 GB. Volume is Flexible type, file space guarantee, no mirroring. We have exactly two LUNs on the volume mapped. 95 GB and 50 GB. Both of them are set to reserve 0% for snapshots. Both have space reservation. There is still much space on the volume (in theory). df -r shows:
Filesystem kbytes used avail reserved Mounted on /vol/BACKUP/ 199229440 199229440 0 142799672 /vol/BACKUP/
There is also some free space left on aggregate. We have on the same aggregate similar volumes with LUNs (same configuration) and they are completely fine. We have new shelf and we want to migrate there some data, before we install new shelf, we want to make sure, that we have backups of all the data. However, because of this one, particular volume, backup fails (no free space for the snapshot).
added: If i check space occupied on production system, where both LUNs are mapped, it's only 94 GB.