Date: Fri, 15 Jul 2022 15:16:56 +0200 From: Felix Palmen <felix@palmen-it.de> To: freebsd-hackers@freebsd.org Subject: Re: VFS mount rollback for virtio 9pfs Message-ID: <20220715131656.f2epy732npgbgrf5@nexus.home.palmen-it.de> In-Reply-To: <BC734F39-4ECC-4B0D-A771-83763F3283BC@dons.net.au> References: <75ACE8B8-A41F-4742-95DA-3CFB3B97746A@dons.net.au> <20220714101214.sju2rpsngqjyuvsb@nexus.home.palmen-it.de> <BC734F39-4ECC-4B0D-A771-83763F3283BC@dons.net.au>
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* Daniel O'Connor <darius@dons.net.au> [20220714 20:57]:
> That's the plan but if you want to test it you should be able to clone
> the repo [...]
I tested it, successful so far as it seems! Thanks again!
My usecase is a 14-CURRENT VM I mostly use for testing ports with
poudriere. It's only running when needed (cause it hogs quite some RAM)
and still I want the logs always available. So far I used NFS for that
which had some performance issues with ports producing *lots* of output
like e.g. gcc.
Now it's using 9pfs instead \o/ =E2=80=93 will see whether this improves
performance.
----
For reference (if anyone else wants to give it a shot), here's what I
did so far:
- fetched your branch into my local src repo, rebased it onto main
- rebuilt and reinstalled the system
- tried to load the modules, noticed they're not yet included in
recursive build (remind me to add that, hehe), so manually did
make / make install in their dirs
- added virtio_9pnet and virtio_9pfs to kld_list in /etc/rc.conf
- couldn't figure out how to use it with fstab, so added this stupid
little rc script:
/usr/local/etc/rc.d/mountvirtfs
#v+
#!/bin/sh
# PROVIDE: mountvirtfs
# REQUIRE: DAEMON
# BEFORE: LOGIN
=2E /etc/rc.subr
name=3D"mountvirtfs"
desc=3D"mount VirtFS shares from host"
start_cmd=3D"mountvirtfs_start"
stop_cmd=3D":"
mountvirtfs_start()
{
mount -t virtfs -o trans=3Dvirtio logs /usr/local/poudriere/data/lo=
gs
mount -t virtfs -o trans=3Dvirtio html /usr/local/share/poudriere/h=
tml
}
run_rc_command "$1"
#v-
Well, it works!
# mount | grep virtfs
logs on /usr/local/poudriere/data/logs (virtfs, local)
html on /usr/local/share/poudriere/html (virtfs, local)
BR, Felix
--=20
Dipl.-Inform. Felix Palmen <felix@palmen-it.de> ,.//..........
{web} http://palmen-it.de {jabber} [see email] ,//palmen-it.de
{pgp public key} http://palmen-it.de/pub.txt // """""""""""
{pgp fingerprint} A891 3D55 5F2E 3A74 3965 B997 3EF2 8B0A BC02 DA2A
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