Hi, new to Ubuntu.
I had Debian running a long time in Hyper-V (bare metal) but switched to 16.04 LTS because i want vRSS and SR-IOV.
I never really looked at TRIM in Hyper-V.
Now i wonder how it works. Who does the trimming? The VM (Ubuntu) or the host (Hyper-V)?
Does Hyper-V trim everything outside the virtual disk and Ubuntu inside the virtual disk?
How can i see if TRIM is working? Is there something i need to do?
lsblk says it is a spinning disk
Also how can i see if NCQ (command queueing) is enabled/working respectively to i need it inside the VM?
In FreeBSD i can do this and see NCQ enabled:
But Ubuntu just says:
I had Debian running a long time in Hyper-V (bare metal) but switched to 16.04 LTS because i want vRSS and SR-IOV.
I never really looked at TRIM in Hyper-V.
Now i wonder how it works. Who does the trimming? The VM (Ubuntu) or the host (Hyper-V)?
Does Hyper-V trim everything outside the virtual disk and Ubuntu inside the virtual disk?
How can i see if TRIM is working? Is there something i need to do?
lsblk says it is a spinning disk
Code:
~# lsblk -d -o name,rota
NAME ROTA
sda 1
sr0 1Also how can i see if NCQ (command queueing) is enabled/working respectively to i need it inside the VM?
In FreeBSD i can do this and see NCQ enabled:
Code:
~# dmesg |grep da0
da0 at storvsc0 bus 0 scbus0 target 0 lun 0
da0: <Msft Virtual Disk 1.0> Fixed Direct Access SPC-3 SCSI device
da0: 300.000MB/s transfers
da0: Command Queueing enabled
da0: 20480MB (41943040 512 byte sectors)Code:
~# dmesg |grep sda
[ 2.320154] sd 0:0:0:0: [sda] 41943040 512-byte logical blocks: (21.5 GB/20.0 GiB)
[ 2.321162] sd 0:0:0:0: [sda] 4096-byte physical blocks
[ 2.324794] sd 0:0:0:0: [sda] Write Protect is off
[ 2.326795] sd 0:0:0:0: [sda] Mode Sense: 0f 00 00 00
[ 2.327124] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
[ 2.332761] sda: sda1 sda2 sda3
[ 2.336875] sd 0:0:0:0: [sda] Attached SCSI disk
[ 4.450469] EXT4-fs (sda2): mounted filesystem with ordered data mode. Opts: (null)
[ 5.416756] EXT4-fs (sda2): re-mounted. Opts: errors=remount-ro
[ 5.920198] Adding 4395004k swap on /dev/sda3. Priority:-1 extents:1 across:4395004k FS