On Tue, 28.06.16 11:20, jsl6uy js16uy (js1...@gmail.com) wrote: > Hello all, hope all is well > > Should I be able to control the IO for a tar process? > > I am on arch linux using systemd-run to initiate a service to which I can > apply resource limits > > Linux 4.6.2-1-ARCH #1 SMP PREEMPT Wed Jun 8 08:40:59 CEST 2016 x86_64 > GNU/Linux > > systemctl --version > systemd 230 > +PAM -AUDIT -SELINUX -IMA -APPARMOR +SMACK -SYSVINIT +UTMP +LIBCRYPTSETUP > +GCRYPT +GNUTLS +ACL +XZ +LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD +IDN > > > I am starting a transient service with the parameters below. I have tried > several combinations > > sudo systemd-run --unit=loadio -p "BlockIOWriteBandwidth=/dev/dm-1 50M" -- > su - foo -c "cd $PWD && tar vcf custom_box.box ./metadata.json > ./Vagrantfile ./box.img"
So this creates a transient service unit, and then runs "su" inside of it, which will create a separate transient scope unit for the login session "su" creates. Or in other words: you actually create a the unit correctly, but then immediately escape it again for the actual command you want to run. Consider using the "User=" property instead of "su". "User=" does not involve PAM and hence does not result in creation of a new user login session. Lennart -- Lennart Poettering, Red Hat _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/systemd-devel