On Fri, May 13, 2011 at 10:53:52PM +0200, Tollef Fog Heen wrote: > ]] Roger Leigh > > | I assume from the existing breakage that /any/ autofs mountpoint > | is unsuitable for bind mounting? > > Looks like it. I think that's a kernel bug that we should just get > fixed. If we do so, the whole problem goes away. I have no idea how > easy or not that is, though.
Are the kernel folks aware of this issue? Given that systemd is exercising autofs in a way not seen much before (I've only ever used it on /net for NFS automounting), it's likely we're the first to run into problems. I'm thinking of applying something like this to schroot to fix things up. It removes all the rbinds; if uses want fancier mounts, then they will need to add them. As and when the autofs issue is fixed, we can look at adding back the rbinds. Note it's just a work in progress, so not fully tidied/ordered yet. Regards, Roger diff --git a/etc/profile-templates/all/linux/fstab b/etc/profile-templates/all/linux/fstab index 013098e..e40e881 100644 --- a/etc/profile-templates/all/linux/fstab +++ b/etc/profile-templates/all/linux/fstab @@ -1,2 +1,2 @@ -/proc /proc none rw,rbind 0 0 -/sys /sys none rw,rbind 0 0 +/proc /proc none rw,bind 0 0 +/sys /sys none rw,bind 0 0 diff --git a/etc/profile-templates/buildd/linux/fstab b/etc/profile-templates/buildd/linux/fstab index 8ebf49d..5964de1 100644 --- a/etc/profile-templates/buildd/linux/fstab +++ b/etc/profile-templates/buildd/linux/fstab @@ -1,3 +1,5 @@ /dev/pts /dev/pts none rw,bind 0 0 tmpfs /dev/shm tmpfs defaults 0 0 +# Mount a large scratch space for the build, so we don't use up +# space on the LVM snapshot of the chroot itself. /home/buildd/build-trees /build none rw,bind 0 0 diff --git a/etc/profile-templates/default/linux/fstab b/etc/profile-templates/default/linux/fstab index 97dc4ec..79cd722 100644 --- a/etc/profile-templates/default/linux/fstab +++ b/etc/profile-templates/default/linux/fstab @@ -1,3 +1,4 @@ -/dev /dev none rw,rbind 0 0 +/dev /dev none rw,bind 0 0 /home /home none rw,bind 0 0 /tmp /tmp none rw,bind 0 0 +/dev/pts /dev/pts none rw,bind 0 0 diff --git a/etc/profile-templates/desktop/linux/fstab b/etc/profile-templates/desktop/linux/fstab index 9463df1..f9a29a4 100644 --- a/etc/profile-templates/desktop/linux/fstab +++ b/etc/profile-templates/desktop/linux/fstab @@ -1,6 +1,16 @@ -/dev /dev none rw,rbind 0 0 +/dev /dev none rw,bind 0 0 +/dev/pts /dev/pts none rw,bind 0 0 /home /home none rw,bind 0 0 /tmp /tmp none rw,bind 0 0 # If you use gdm3, uncomment this line to allow Xauth to work #/var/run/gdm3 /var/run/gdm3 none rw,bind 0 0 + +# More generally, it may be desirable to have access to /run, +# especially if you wish to run additional services in the chroot. +# However, note that this may potentially cause undesirable behaviour +# on upgrades, such as killing services on the host. +#/run /run none rw,bind 0 0 +#/run/lock /run/lock none rw,bind 0 0 +#/dev/shm /dev/shm none rw,bind 0 0 +#/run/shm /run/shm none rw,bind 0 0 -- .''`. Roger Leigh : :' : Debian GNU/Linux http://people.debian.org/~rleigh/ `. `' Printing on GNU/Linux? http://gutenprint.sourceforge.net/ `- GPG Public Key: 0x25BFB848 Please GPG sign your mail.
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