On Mon, 07 Aug 2023 04:06:37 +0800, Vagrant Cascadian wrote: > > [1 <text/plain (7bit)>] > On 2023-08-06, Hilton Chain wrote: > > On Sat, 22 Jul 2023 04:24:17 +0800, > > Saku Laesvuori via Bug reports for GNU Guix wrote: > >> > >> [1 <text/plain; us-ascii (quoted-printable)>] > >> > > I vote for TMPFS, since that would also reduce flash wear. > >> > > Honestly I don't get why it's not already using TMPFS. > >> > > >> > One argument could be how much ram it takes: > >> > > >> > $ du -sc /run/* > >> > 12 /run/blkid > >> > 0 /run/booted-system > >> > 0 /run/current-system > >> > 1312 /run/setuid-programs > >> > 524 /run/udev > >> > 1848 total > >> > > >> > That is with no explicit setuid programs configured, on a machine with a > >> > fairly minimal configuration. > >> > > >> > Not a *huge* amount of ram, but not nothing, either... > >> > >> I'd say it's effectively nothing for almost all devices capable of > >> running Guix. On my laptop the size of /run is 4804 (4.7M). In a quick > >> test one terminal window with only zsh running in it took almost 10 > >> times as much ram. > >> [2 signature.asc <application/pgp-signature (7bit)>] > >> No public key for 257D284A2A1D3A32 created at 2023-07-22T04:24:17+0800 > >> using RSA > > > > I'm currently using tmpfs for /tmp, /run and /var/run on my Guix > > Systems. > > > > If you are interested, this is my base file systems: > > --8<---------------cut here---------------start------------->8--- > > (cons* (file-system > > (device "none") > > (mount-point "/tmp") > > (type "tmpfs") > > (check? #f)) > > > > (file-system > > (device "none") > > (mount-point "/run") > > (type "tmpfs") > > (needed-for-boot? #t) > > (check? #f)) > > > > (file-system > > (device "none") > > (mount-point "/var/run") > > (type "tmpfs") > > (needed-for-boot? #t) > > (check? #f)) > > You probably want to restrict permissions on /run and /var/run, as the > defaults for tmpfs are world-writeable, allowing any user or process to > create files or directories in potentially harmful ways... > > For /tmp, these defaults are appropriate, however tricky a > world-writeable directory is...
I have set the mode and size limit on them. Thank you so much! Otherwise I won't notice that... > Although I rarely have enough spare ram on a system to have /tmp be > tmpfs for Guix System because builds happen there by default, and > occasionally I need a lot more space than available ram in some cases. I have enough RAM for builds I currently do on my laptop and it's the builder for other systems, so tmpfs is fine for me. Thanks
