Hi,
One question please:
If I use SSD as a storage on a host machine, does KVM's virtio I/O layer pass the TRIM/DISCARD commands to the SSD?
I guess the question would be twofold: 1) is TRIM supported/forwarded if only one LVM'ed partition of SSD is forwarded? 2) is TRIM supported/forwarded if full SSD is forwarded (i.e. /dev/sdX)
On Sat, Feb 2, 2013 at 5:12 AM, Dmitry E. Mikhailov d.mikhailov@infocommunications.ru wrote:
Hi,
One question please:
If I use SSD as a storage on a host machine, does KVM's virtio I/O layer pass the TRIM/DISCARD commands to the SSD?
Doesn't look like it, *yet*. That looks like it came out in the 2.6.33 kernels, the upstream vendor for CentOS has only gotten up to 2.6.32. I wouldn't necessarily call it stable for production use until it's been out for a while.
I guess the question would be twofold:
- is TRIM supported/forwarded if only one LVM'ed partition of SSD is
forwarded? 2) is TRIM supported/forwarded if full SSD is forwarded (i.e. /dev/sdX)
See above.
-
Dmitry E. Mikhailov -
Nico Kadel-Garcia