[Qemu-devel] [Bug 1609968] Re: "cannot set up guest memory" b/c no automatic clearing of Linux' cache

2016-08-09 Thread Dr. David Alan Gilbert
Thanks Celmor; that might be one for the zfs guys then if that's what's holding onto the caches; I suspect their caching is a bit different from the rest of the Linux filesystems. I'm going to close this as 'invalid' because I'm pretty sure this isn't a qemu bug; the kernel should be giving us

[Qemu-devel] [Bug 1609968] Re: "cannot set up guest memory" b/c no automatic clearing of Linux' cache

2016-08-08 Thread Celmor
@dgilbert-h / Dr. David Alan Gilbert Thanks for your answer. b) Mounted/used block devices: NAMEMOUNTPOINT TYPE FSTYPE sdadisk crypto_LUKS └─Data1crypt zfs_member ├─sdb5 / part ext4 └─sdb6 /boot part vfat sdddisk crypto_LUKS

[Qemu-devel] [Bug 1609968] Re: "cannot set up guest memory" b/c no automatic clearing of Linux' cache

2016-08-08 Thread Dr. David Alan Gilbert
Hi Celmor, That shouldn't happen! QEMU's allocation of memory is pretty normal, so really the question is for the kernel guys. Having chatted to a collague, two questions: a) Does it still happen if you set /proc/sys/vm/overcommit_memory to 1? b) What filesystem are you using (some