mirror of
https://github.com/xen-project/xen.git
synced 2026-10-28 18:21:39 +01:00
Yang Hongyang
c031533480
This patch adds the machinery required for protecting a guest's
disk state, when the guest disk uses a DRBD disk backend.
This patch comprises of two parts:
1. Hotplug scripts: The block-drbd-probe script is responsible for
performing sanity checks on the state of the DRBD disk before the
checkpointing process begins. This script should be invoked by
libxl for each of the guest's disk devices, when starting Remus.
2. Remus drbd disk device: Implements the interfaces required by the
remus abstract device layer. A note about the implementation:
a) setup() is called for each disk attached to the guest.
During setup():
i) The hotplug script is called to perform the sanity check.
ii) Libxl obtains a handle to the DRBD device (/dev/drbd*) and
and subsequently controls disk checkpoint replication using
this handle in the checkpoint callbacks.
c) The preresume() checkpoint callback is executed asynchronously
using libxl__ev_child_fork(), as it may potentially block for more
than few seconds in case of backup failure.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Yang Hongyang <yanghy@cn.fujitsu.com>
Signed-off-by: Ian Jackson <Ian.Jackson@eu.citrix.com>
Signed-off-by: Shriram Rajagopalan <rshriram@cs.ubc.ca>
Acked-by: Ian Jackson <ian.jackson@eu.citrix.com>
Acked-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
91 lines
2.8 KiB
Makefile
91 lines
2.8 KiB
Makefile
XEN_ROOT = $(CURDIR)/../../..
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include $(XEN_ROOT)/tools/Rules.mk
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# Init scripts.
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XENDOMAINS_INITD = init.d/xendomains
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XENDOMAINS_LIBEXEC = xendomains
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XENDOMAINS_SYSCONFIG = init.d/sysconfig.xendomains
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XENCOMMONS_INITD = init.d/xencommons
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XENCOMMONS_SYSCONFIG = init.d/sysconfig.xencommons
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# Xen script dir and scripts to go there.
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XEN_SCRIPTS = vif-bridge
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XEN_SCRIPTS += vif-route
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XEN_SCRIPTS += vif-nat
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XEN_SCRIPTS += vif-openvswitch
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XEN_SCRIPTS += vif2
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XEN_SCRIPTS += vif-setup
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XEN_SCRIPTS-$(CONFIG_REMUS_NETBUF) += remus-netbuf-setup
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XEN_SCRIPTS += block
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XEN_SCRIPTS += block-enbd block-nbd
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XEN_SCRIPTS-$(CONFIG_BLKTAP1) += blktap
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XEN_SCRIPTS += xen-hotplug-cleanup
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XEN_SCRIPTS += external-device-migrate
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XEN_SCRIPTS += vscsi
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XEN_SCRIPTS += block-iscsi
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XEN_SCRIPTS += block-drbd-probe
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XEN_SCRIPTS += $(XEN_SCRIPTS-y)
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SUBDIRS-$(CONFIG_SYSTEMD) += systemd
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XEN_SCRIPT_DATA = xen-script-common.sh locking.sh logging.sh
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XEN_SCRIPT_DATA += xen-hotplug-common.sh xen-network-common.sh vif-common.sh
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XEN_SCRIPT_DATA += block-common.sh
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UDEV_RULES_DIR = $(CONFIG_DIR)/udev
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UDEV_RULES = xen-backend.rules $(UDEV_RULES-y)
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.PHONY: all
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all: $(XENCOMMONS_INITD) subdirs-all
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$(XENCOMMONS_INITD): $(XEN_ROOT)/config/$(XEN_OS).modules $(XENCOMMONS_INITD).in
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$(XEN_ROOT)/tools/hotplug/Linux/update-modules.sh \
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$(XEN_ROOT) \
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$(XEN_OS) \
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$(XENCOMMONS_INITD) > $@
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.PHONY: build
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build: all
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.PHONY: install
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install: all install-initd install-scripts install-udev subdirs-install
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# See docs/misc/distro_mapping.txt for INITD_DIR location
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.PHONY: install-initd
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install-initd: all
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[ -d $(DESTDIR)$(INITD_DIR) ] || $(INSTALL_DIR) $(DESTDIR)$(INITD_DIR)
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[ -d $(DESTDIR)$(SYSCONFIG_DIR) ] || $(INSTALL_DIR) $(DESTDIR)$(SYSCONFIG_DIR)
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[ -d $(DESTDIR)$(LIBEXEC) ] || $(INSTALL_DIR) $(DESTDIR)$(LIBEXEC)
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$(INSTALL_PROG) $(XENDOMAINS_LIBEXEC) $(DESTDIR)$(LIBEXEC)
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$(INSTALL_PROG) $(XENDOMAINS_INITD) $(DESTDIR)$(INITD_DIR)
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$(INSTALL_DATA) $(XENDOMAINS_SYSCONFIG) $(DESTDIR)$(SYSCONFIG_DIR)/xendomains
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$(INSTALL_PROG) $(XENCOMMONS_INITD) $(DESTDIR)$(INITD_DIR)
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$(INSTALL_DATA) $(XENCOMMONS_SYSCONFIG) $(DESTDIR)$(SYSCONFIG_DIR)/xencommons
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$(INSTALL_PROG) init.d/xen-watchdog $(DESTDIR)$(INITD_DIR)
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.PHONY: install-scripts
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install-scripts: all
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[ -d $(DESTDIR)$(XEN_SCRIPT_DIR) ] || \
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$(INSTALL_DIR) $(DESTDIR)$(XEN_SCRIPT_DIR)
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set -e; for i in $(XEN_SCRIPTS); \
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do \
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$(INSTALL_PROG) $$i $(DESTDIR)$(XEN_SCRIPT_DIR); \
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done
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set -e; for i in $(XEN_SCRIPT_DATA); \
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do \
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$(INSTALL_DATA) $$i $(DESTDIR)$(XEN_SCRIPT_DIR); \
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done
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.PHONY: install-udev
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install-udev:
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[ -d $(DESTDIR)$(UDEV_RULES_DIR) ] || \
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$(INSTALL_DIR) $(DESTDIR)$(UDEV_RULES_DIR)/rules.d
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set -e; for i in $(UDEV_RULES); \
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do \
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$(INSTALL_DATA) $$i $(DESTDIR)$(UDEV_RULES_DIR)/rules.d; \
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done
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.PHONY: clean
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clean: subdirs-clean
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