Re: Status of VDISK after swap space usage

Hi Ray, Once the guest touches a page in the VDISK, VM will allocate that page and keep it forever until the VDISK is destroyed. So, simply telling the guest to turn off/on the swap will not tell somehow magically release those pages. The only way I know to actually release these pages from the

Status of VDISK after swap space usage

Hi, Our environment consists of SLES 11.4 servers under VM 6.2. Sometimes we have misbehaving Linux applications that dip heavily into the SWAPGEN configured swap space. After things settle down, Linux never lets go of the space until we issue a swapoff -a, and swapon -a. Of course I do this

Re: Status of VDISK after swap space usage

My request to get this fixed was rejected by ibm several years ago. The problem is that even though linux doesn't have anything on the vdisk, z/vm still has to back it. I asked for a diagnose as we do with real storage - a way for Linux to tell z/vm the page no longer needs backing. So after

Re: Status of VDISK after swap space usage

This is interesting. Having 2TB of page space in test/dev I'm sure we have some potential space savings if this could be done across all dev/test servers... However, you'd really want to do this carefully and it might not even be practical if linux itself didn't drive this diag. If done outside

Re: Status of VDISK after swap space usage

On Wednesday, 12/09/2015 at 08:15 GMT, Barton Robinson wrote: > My request to get this fixed was rejected by ibm several years ago. The > problem is that even though linux doesn't have anything on the vdisk, > z/vm still has to back it. I asked for a diagnose as we