| Lee H. Marzke via plug on 21 Jul 2023 15:42:34 -0700 |
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| Re: [PLUG] how to divide up a filesystem? |
I've had my main work Thinkpad(s) running Ubuntu 20.04 to 24.04 on various SSD's such as Samsung 980 Pro 2TB for the last 4 years. Everything mounted on a single Encrypted LVM, including /, /home swap , VM images. Never had any SSD problems, as I avoid cheeper QVO or EVO rated SSDs I believe the wear gets distributed across the cells, if you have a large SSD. If you have a hard disk, it could be used to store image backups and or a target for your chosen backup solution. Swap to a hard disk may cause your machine to just stop everything if it ever swaps, I'd avoid that. I do run a nightly backup of my /home partition using Duplicity ( encrypted ) to S3 So I'd advise you put your money into one fast/reliable SSD and not worry about wear and use a /home partition just so you can't fill up the root disk accidentally. And use the HD as a cheap backup target. And definitely include a backup solution. My home directory is 267GB and a nightly incremental encrypted backup sent to S3 takes about 5 to 10 min. Using S3 means I can backup from anywhere while traveling. Use PCIe M2 NVMe adapter boards not SATA. Unless you have M2 directly on your Main board. Lee ----- Original Message ----- > From: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org> > To: "Philadelphia Linux User's Group Discussion List" <plug@lists.phillylinux.org> > Sent: Tuesday, July 11, 2023 7:24:33 PM > Subject: Re: [PLUG] how to divide up a filesystem? > Ron Mansolino via plug said on Tue, 11 Jul 2023 09:35:59 -0400 > >>I have a pile of cheap parts I intend to assemble into a >>general-purpose workstation; I have 3 sata ports available. >> >>I want to put / on an SSD, and I'm looking for suggestions on >>how/where to mount the rest. > > I mount my / on the SSD. I mount /home, /var, any other data > directories, /var, and the swap partition on spinning rust. This way > the SSD/NVMe houses only slowly changing data. People smarter than I > are still arguing both sides of whether rapidly changing data > prematurely wears an SSD, so I err on the side of safety. > > A pro move is to bind mount home and var etc. So on your spinning rust, > you make directories /home, /var, etc, and then in /etc/fstab bind > mount them after regular mounting the root of the spinning rust drive. > Now you no longer need to worry about sizing partitions, because each > bind-mounted directory uses what it needs, without the need to > oversize every partition, or use layers of abstraction like lvm. > >>My instinct says to put /var on it's own port; and /usr is the largest >>subdir on my other machine. >> >>I thought about putting /home on the third spindle so I can yank it >>later if need be, can this be NTFS? > > You can use just one spinning rust and yank the whole thing. I wouldn't > use NTFS on a Linux computer. EXT4 is tremendously reliable. > >>What else should I put there? (eg. pub). >> >>how much swap space is overkill? > > The last time I heard a rule of thumb, it was to size your swap > partition at 3 times your RAM, so that would be 24GB given that you > have 8GB of RAM. Please keep in mind that swapping should be an > emergency, not a regular thing. Applications that use swap space slow > down by, in my subjective opinion, 10 to 100 times. I spoze it would be > less if the swap is on the SSD, but if the guys about SSDs wearing out > with large numbers of writes are correct, that's not good. If I catch an > application swapping, I close other programs, or if that doesn't work I > cease using the memory hog application. > > > SteveT > > Steve Litt > Autumn 2022 featured book: Thriving in Tough Times > http://www.troubleshooters.com/bookstore/thrive.htm > ___________________________________________________________________________ > Philadelphia Linux Users Group -- http://www.phillylinux.org > Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce > General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug -- "Between subtle shading and the absence of light lies the nuance of iqlusion..." - Kryptos Lee Marzke, lee@marzke.net http://marzke.net/lee/ Infrastructure Engineer Zenimax +1 484-961-0369 mobile +1 484-348-2230 fax ___________________________________________________________________________ Philadelphia Linux Users Group -- http://www.phillylinux.org Announcements - http://lists.phillylinux.org/mailman/listinfo/plug-announce General Discussion -- http://lists.phillylinux.org/mailman/listinfo/plug