Re: [Dorset] SSD system
Keith, thank you for your comments. Re BTRFS: searching around suggested ext4 + journaling imposed a lot of extra writes on a SSD. Do modern SSDs have a burn-out? If you use ext4 on your SSDs, do you limit journaling? A regular contributor to alt.os.linux.mageia suggests there are a number of advantages with BTRFS for SSDs, but looking at at all the man pages for BTRFS makes me think it's quite complex to manage. Re rsync: you're quite correct about the trailing slash. I had things the wrong way round, and a quick dry run confirmed it. The value of a peer review! However, I do need the trailing / for the return trip, because the top level directories exist. Right? Regards, Graeme -- Next meeting: Online, Jitsi, Tuesday, 2021-04-06 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
Re: [Dorset] SSD system
On Fri, 12 Mar 2021 12:59:55 +, gra...@gemmill.name said: > 1. I understand that the BTR file system may be better than ext4 for > SSDs Not heard that before. All our SSD systems run on ext4. What problem is "better" solving for you? > #rsync -av /opt/ /mnt/nasdata/ >/mnt/nasdata/opt.txt > #rsync -av /local/ /mnt/nasdata/ >/mnt/nasdata/local.txt > $rsync -av /virt/ /mnt/nasdata/ >/mnt/nasdata/virt.txt That will put all files and directories from the three sources all together in /mnt/nasdata. That probably isn't what you want: you may prefer to omit the trailing slash from the source directories, which will then rsync the directories themselves rather than their contents. Overall, I'd say you're doing what's easily done: you're over-thinking it. An SSD system mostly doesn't need to be treated any differently to a rotating disk one. -- Linux Tips: https://www.tiger-computing.co.uk/category/techtips/ -- Next meeting: Online, Jitsi, Tuesday, 2021-04-06 20:00 Check to whom you are replying Meetings, mailing list, IRC, ... http://dorset.lug.org.uk New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
