Discard works with virtio-scsi controllers for disks in QEMU. Just use discard=unmap in the disk section (scsi disk). > On 12 Dec 2014, at 13:17, Max Power <maillists@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > >> Wido den Hollander <wido@xxxxxxxx> hat am 12. Dezember 2014 um 12:53 >> geschrieben: >> It depends. Kernel RBD does not support discard/trim yet. Qemu does >> under certain situations and with special configuration. > > Ah, Thank you. So this is my problem. I use rbd with the kernel modules. I think > I should port my fileserver to qemu/kvm environment then and hope that it is > safe to have a big qemu-partition with around 10 TB. > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com Cheers. –––– Sébastien Han Cloud Architect "Always give 100%. Unless you're giving blood." Phone: +33 (0)1 49 70 99 72 Mail: sebastien.han@xxxxxxxxxxxx Address : 11 bis, rue Roquépine - 75008 Paris Web : www.enovance.com - Twitter : @enovance
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