PVE using ssd's, suggestions anyone?

[Jim]

Hello,
New to Proxmox VE, having just installed it for the first time today.
Very impressive piece of work.

I have installed it on a dell poweredge r710
w/ 2 120gb sata ssd's in raid1 and 6 146gb hdd's in raid10.

For this first install I just let the install run. It partitioned the ssd as follows:
vmhost0:/# df -H
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/pve-root 30G 735M 28G 3% /
tmpfs 26G 0 26G 0% /lib/init/rw
udev 11M 848k 9.7M 9% /dev
tmpfs 26G 0 26G 0% /dev/shm
/dev/mapper/pve-data 69G 189M 69G 1% /var/lib/vz
/dev/sda1 529M 36M 466M 8% /boot
and 13.9G of swap space.

When creating/adding vm's is the space requirements for the root partition going to increase greatly?

Does anyone have any suggestions on the size requirements for root and swap?
My plan was to run a couple vm's on the ssd's and a couple on the hdd's.
For those using ssd's have you encountered any issues? I've seen the thread related to TRIM
What about the partition table boundary?

vmhost0:/# fdisk -l /dev/sda
Disk /dev/sda: 119.4 GB, 119453777920 bytes
255 heads, 63 sectors/track, 14522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sda1 * 1 66 524288 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 66 14522 116123645 8e Linux LVM

Should I be concerned about this?

Should I replace the ssd's w/ hdd's before I get to far into this setup?

Any/all input is appreciated.

regards,
Jim

 

[udo]

Hello,
New to Proxmox VE, having just installed it for the first time today.
Very impressive piece of work.

I have installed it on a dell poweredge r710
w/ 2 120gb sata ssd's in raid1 and 6 146gb hdd's in raid10.

For this first install I just let the install run. It partitioned the ssd as follows:
vmhost0:/# df -H
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/pve-root 30G 735M 28G 3% /
tmpfs 26G 0 26G 0% /lib/init/rw
udev 11M 848k 9.7M 9% /dev
tmpfs 26G 0 26G 0% /dev/shm
/dev/mapper/pve-data 69G 189M 69G 1% /var/lib/vz
/dev/sda1 529M 36M 466M 8% /boot
and 13.9G of swap space.

When creating/adding vm's is the space requirements for the root partition going to increase greatly?

Does anyone have any suggestions on the size requirements for root and swap?
My plan was to run a couple vm's on the ssd's and a couple on the hdd's.
For those using ssd's have you encountered any issues? I've seen the thread related to TRIM
What about the partition table boundary?

vmhost0:/# fdisk -l /dev/sda
Disk /dev/sda: 119.4 GB, 119453777920 bytes
255 heads, 63 sectors/track, 14522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sda1 * 1 66 524288 83 Linux
Partition 1 does not end on cylinder boundary.
/dev/sda2 66 14522 116123645 8e Linux LVM

Should I be concerned about this?

Should I replace the ssd's w/ hdd's before I get to far into this setup?

Any/all input is appreciated.

regards,
Jim

Hi,
i prefer the pve-installation on disk-raid (cheaper), and using the ssd as storage for database-VMs.
Chnage the drive-order in the bios (raid + system) for that and use the boot-params swapsize and maxroot (like "linux maxroot=20 swapsize=8").
If you wan't to use a cluster with DRBD-storage you need an own partition-layout (or split your raid-10).

Udo