October 2014 - Libguestfs - libguestfs List Archives

[PATCH 0/3] RFC: appliance flavours
by Pino Toscano 02 Oct '14

02 Oct '14

Hi, this is a prototype of something I've around for some time. Basically it is about adding new appliances in addition to the main one currently used and kept up-to-date automatically: this way it is possible to create new appliances with extra packages, to be used in specific contexts (like virt-rescue, with more network/recovery tools) without filling the main appliance. It's still WIP (the most notable lack is a proper base.tar.gz with config files of flavour packages), but I'd like to get some feedback about it. Pino Toscano (3): New API: appliance flavours appliance: add a "rescue" appliance for virt-rescue appliance: move openssh to the "rescue" appliance appliance/Makefile.am | 21 ++++++++++++++++++++- appliance/packagelist-rescue.in | 32 ++++++++++++++++++++++++++++++++ appliance/packagelist.in | 4 ---- generator/actions.ml | 28 ++++++++++++++++++++++++++++ rescue/rescue.c | 4 ++++ src/appliance.c | 22 +++++++++++++++++----- src/guestfs-internal.h | 1 + src/guestfs.pod | 18 ++++++++++++++++++ src/handle.c | 24 ++++++++++++++++++++++++ 9 files changed, 144 insertions(+), 10 deletions(-) create mode 100644 appliance/packagelist-rescue.in -- 1.9.3

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[PATCH v2 0/4] launch: libvirt: Use qemu-bridge-helper to implement a full network (RHBZ#1148012).
by Richard W.M. Jones 02 Oct '14

02 Oct '14

v2: - Make virbr0 configurable. - Fix the tests.

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[PATCH v3 0/4] launch: libvirt: Use qemu-bridge-helper to implement a
by Richard W.M. Jones 02 Oct '14

02 Oct '14

v3: - Various changes to dhclient/dhcpcd as discussed on the mailing list.

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[PATCH 1/2] appliance: Use dhclient instead of hard-coding IP address of appliance.
by Richard W.M. Jones 01 Oct '14

01 Oct '14

qemu in SLIRP mode offers DHCP services to the appliance. We don't use them, but use a fixed IP address intead. This changes the appliance to get its IP address using DHCP. Note: This is only used when the network is enabled. dhclient is somewhat slower, but the penalty (a few seconds) is only paid for network users. We could consider using the faster systemd dhcp client instead. --- appliance/init | 9 +++------ appliance/packagelist.in | 1 + 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/appliance/init b/appliance/init index 6d62338..d688a52 100755 --- a/appliance/init +++ b/appliance/init @@ -79,12 +79,9 @@ hwclock -u -s ip addr add 127.0.0.1/8 brd + dev lo scope host ip link set dev lo up -ip addr add 169.254.2.10/16 brd + dev eth0 scope global -ip link set dev eth0 up - -ip route add default via 169.254.2.2 - -echo nameserver 169.254.2.3 > /etc/resolv.conf +if grep -sq guestfs_network=1 /proc/cmdline; then + dhclient +fi # Scan for MDs. mdadm -As --auto=yes --run diff --git a/appliance/packagelist.in b/appliance/packagelist.in index 276b4c2..4e93eaf 100644 --- a/appliance/packagelist.in +++ b/appliance/packagelist.in @@ -210,6 +210,7 @@ binutils bzip2 coreutils cpio +dhclient diffutils dosfstools e2fsprogs -- 2.0.4

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Useful tip: Run guestfsd under gdb and print stack trace on exit
by Richard W.M. Jones 01 Oct '14

01 Oct '14

Useful for tracking down segfaults in the daemon. This is not upstreamable right now. Example usage: $ ./run guestfish -v -x -a /dev/null run : debug segv "" [...] libguestfs: trace: launch = 0 libguestfs: trace: debug "segv" "" guestfsd: main_loop: new request, len 0x34 Program received signal SIGSEGV, Segmentation fault. debug_segv (subcmd=0x4687050 "segv", argc=0, argv=0x4687070) at debug.c:223 223\tdebug.c: No such file or directory. #0 debug_segv (subcmd=0x4687050 "segv", argc=0, argv=0x4687070) at debug.c:223 #1 0x000000000042e083 in debug_stub (xdr_in=<optimized out>) at stubs.c:2557 #2 0x0000000000448d5d in dispatch_incoming_message (xdr_in=0x7fffffffe8d0) at stubs.c:15819 #3 0x0000000000428a91 in main_loop (_sock=73953360, _sock@entry=3) at proto.c:192 #4 0x000000000040564d in main (argc=<optimized out>, argv=<optimized out>) at guestfsd.c:344 Rebooting. Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com virt-top is 'top' for virtual machines. Tiny program with many powerful monitoring features, net stats, disk stats, logging, etc. http://people.redhat.com/~rjones/virt-top

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[PATCH] sysprep: add no-op --no-selinux-relabel (RHBZ#1148072)
by Pino Toscano 01 Oct '14

01 Oct '14

Add a no-op --no-selinux-relabel option, to be compatible with virt-sysprep < 1.26. --- sysprep/main.ml | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sysprep/main.ml b/sysprep/main.ml index ea94728..f32c4ad 100644 --- a/sysprep/main.ml +++ b/sysprep/main.ml @@ -140,6 +140,8 @@ let main () = "--list-operations", Arg.Unit list_operations, " " ^ s_"List supported operations"; "--long-options", Arg.Unit display_long_options, " " ^ s_"List long options"; "--mount-options", Arg.Set_string mount_opts, s_"opts" ^ " " ^ s_"Set mount options (eg /:noatime;/var:rw,noatime)"; + "--no-selinux-relabel", Arg.Unit (fun () -> ()), + " " ^ s_"Compatibility option, does nothing"; "--operation", Arg.String set_operations, " " ^ s_"Enable/disable specific operations"; "--operations", Arg.String set_operations, " " ^ s_"Enable/disable specific operations"; "-q", Arg.Set quiet, " " ^ s_"Don't print log messages"; -- 1.9.3

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