[clug] Suggestions on Partitions and Mounts for Solid State Disk Drive

[Andrew Steele]

I'll bite. :-)

As there a reason you're wanting to use plain partitions rather than using
LVM?

Generally, I'd have a smallish /boot partition on sda1, then sda2 would be
the rest of the disk as a PV. Then all the various mounts would be LVs
which can be easily resized as the need arises.

The one aspect I don't know about is how using SSDs changes things.
However, using LVM means you can transparently migrate between SSD and
spinning rust.

Using LVM means what partition sizes you use is less critical.

Andrew


On 26 Mar 2017 14:46, "George at Clug via linux" <linux at lists.samba.org>
wrote:

    Hi,

I have been reviewing partitions and mounts for a 500 GB Solid State
Disk Drive.

If you are into this kind of thing, please reply with your comments. I
would be particularly interested in comments about partition sizing. I
usually take the lazy way out and format a single '/' partition, so I
am not sure about allocating sizes.

If you have any tips on OS configuration for SSD's, I would be
interested in learning.

My final solution may end up being a combination of a SSD and a HD due
to a) I have a 2TB HD, b) cheaper for great space, c) I could leave
out noatime.

Below are my current settings for a single 500 GB Solid State Disk
Drive laptop on which I would support one or more virtual machines
using qemu-kvm.

Filesystem      Size  Used Avail Use% Mounted on
/dev/sda1       8.2G  283M  7.5G   4% /
udev             10M     0   10M   0% /dev
tmpfs           2.0G  8.9M  2.0G   1% /run
/dev/sda7        19G  3.5G   14G  20% /usr
tmpfs           4.8G   80K  4.8G   1% /dev/shm
tmpfs           5.0M     0  5.0M   0% /run/lock
tmpfs           4.8G     0  4.8G   0% /sys/fs/cgroup
/dev/sda3       2.7G  245M  2.3G  10% /var
/dev/sda6       360M  2.1M  335M   1% /tmp
/dev/sda9       342G   69M  324G   1% /home
/dev/sda8        92G   60M   87G   1% /var/lib/libvirt
tmpfs           979M  4.0K  979M   1% /run/user/117
tmpfs           979M  8.0K  979M   1% /run/user/1000

----------------------------------------

Device     Boot     Start        End    Sectors
Size Id Type
/dev/sda1  *         2048   17577983   17575936   8.4G
83 Linux
/dev/sda2        23439358 1048573951 1025134594 488.8G  5
Extended
/dev/sda3        17577984   23437311    5859328   2.8G
83 Linux
/dev/sda5        23439360   64395263   40955904  19.5G 82
Linux swap / Solaris
/dev/sda6        64397312   65175551     778240   380M
83 Linux
/dev/sda7        65177600  104237055   39059456  18.6G 83
Linux
/dev/sda8       125724672  321034239  195309568  93.1G 83
Linux
/dev/sda9       321036288 1048573951  727537664 346.9G 83 Linux
--------------------------
#
# / was on /dev/sda1 during installation
UUID=f4ac944a-931e-4266-8a98-d4e4746cd733
/               ext4
errors=remount-ro,defaults,noatime,nosuid 0       1
# /home was on /dev/sda9 during installation
UUID=4cc155f3-ddeb-4215-8eb4-f49dfef8a260 /home
ext4    defaults,noatime,nosuid,nodev,noexec
0       2
# /tmp was on /dev/sda6 during installation
UUID=f55d8d39-152b-4fef-bd54-f5caf2c88294 /tmp
ext4    defaults,noatime,nosuid,noexec,nodev
0       2
# /usr was on /dev/sda7 during installation
UUID=0e790f53-4382-4098-90ce-cabc78121d6f /usr
ext4    defaults,noatime,nodev        0       2
# /var was on /dev/sda3 during installation
UUID=49df0494-213e-43a7-a4f5-70f1c2f241dc /var
ext4    defaults,noatime,nosuid,nodev,noexec
0       2
# /var/lib/libvirt was on /dev/sda8 during installation
UUID=6d24d6e4-5a0c-48d2-8fe8-830a3bb0fcbe /var/lib/libvirt ext4
defaults,noatime,nosuid,nodev,noexec        0       2
# swap was on /dev/sda5 during installation
UUID=2bd1a149-7847-48fe-bfe8-f8b7623b7c38 none
swap    sw              0       0
/dev/sr0        /media/cdrom0   udf,iso9660
user,noauto     0       0

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