Is this an optimum fstab setup for a SSD?

linustalman · 12-17-2021, 09:27 AM

Hi.

I'm running Debian 11. I used auto partitioning with full encryption (LUKS).

What would be an ideal fstab for a Samsung 850 EVO 2TB 2.5in SATA SSD?

-----

My current fstab:

Code:

/dev/mapper/DXXXX1--vg/root ext4 noatime,commit=600,errors=remount-ro 0 1
UUID=3XXXXXXc-0XXb-4XX3-bXX7-9XXXXXXXXXX1 /boot ext2 noatime 0 2
/dev/mapper/DXXXX1--vg-swap_1 none            swap    sw              0       0

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I've already ran these {unsure if all 4 commands were needed}:

Code:

sudo systemctl enable fstrim.timer && sudo systemctl start fstrim.timer

Code:

sudo systemctl daemon-reload

Code:

sudo update-grub

Code:

sudo update-initramfs -u -k all

-----

Thanks.

wpeckham · 12-17-2021, 09:55 AM

Misdirected reply.

boughtonp · 12-17-2021, 10:28 AM

Quote:

Originally Posted by wpeckham

It is good to know that to obtain this TROJAN you would have to go outside of the REPO system and blindly install random software from IRC links.

How many people would DO that?

This appears to be a response to "News: Malware targetting arch on pinephone" ?

wpeckham · 12-17-2021, 01:06 PM

Quote:

Originally Posted by boughtonp

This appears to be a response to "News: Malware targetting arch on pinephone" ?

It was. No idea how that happened! Correcting now...

jmgibson1981 · 12-17-2021, 01:42 PM

Optimum is debateable. Most of the information on all kinds of special settings for ssds was when they were in their infancy. These days even with nothing fancy they will statistically outlast the average computer. The fstrim is necessary but anything else likely isn't. They won't hurt, but won't be a game changer either.

I just do defaults on most disks. And defaults,errors=remount-ro for root.

wpeckham · 12-18-2021, 09:28 AM

"Optimum" will depend upon your storage usage and data as much as your FS options.
That said, I would start with a more SSD aware format in preference to EXT4: F2FS or BTRFS perhaps.

EXT4 is a good general choice when you do not know detail about your storage ahead, so popular with maintainers as a default. BTRFS is solid for a single drive case (a little iffy for RAID 5/6), and F2FS is made specifically FOR solid state and performs better than other options for most SSD cases.

linustalman · 12-18-2021, 09:30 AM

Do the space types matter?

Would this:

Code:

/dev/mapper/DXXXX1--vg-swap_1 none            swap    sw              0       0

...also work like this:

Code:

/dev/mapper/DXXXX1--vg-swap_1 none swap sw 0 0

pan64 · 12-18-2021, 09:32 AM

Quote:

Originally Posted by linustalman

Do the space types matter?

Would this:

Code:

/dev/mapper/DXXXX1--vg-swap_1 none            swap    sw              0       0

...also work like this:

Code:

/dev/mapper/DXXXX1--vg-swap_1 none swap sw 0 0

yes, they are identical. This is just to make it more readable.

wpeckham · 12-18-2021, 09:45 AM

Quote:

Originally Posted by linustalman

Do the space types matter?

Would this:

Code:

/dev/mapper/DXXXX1--vg-swap_1 none            swap    sw              0       0

...also work like this:

Code:

/dev/mapper/DXXXX1--vg-swap_1 none swap sw 0 0

There is a man page that discusses this file, the fields, the options (although it refers you to the file system pages for detail on options specific to the file system), and the formatting. Recommended!

linustalman · 12-18-2021, 09:45 AM

Quote:

Originally Posted by pan64

yes, they are identical. This is just to make it more readable.

Ok, thanks.

linustalman · 12-22-2021, 01:17 AM

Should I replace the "/dev/mapper/" parts with "UUID=..."?

biker_rat · 12-22-2021, 09:19 AM

Add discard after noatime?

linustalman · 12-24-2021, 02:39 AM

Quote:

Originally Posted by biker_rat

Add discard after noatime?

Hi BR. Someone in Reddit said to drop the defaults option as it does nothing other than act as a placeholder for when there's nothing else in the options field.

pan64 · 12-24-2021, 02:41 AM

Quote:

Originally Posted by linustalman

Hi BR. Someone in Reddit said to drop the defaults option as it does nothing other than act as a placeholder for when there's nothing else in the options field.

Would be better to read the man page.