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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-changelog] Implement the parts of vm save which need interaction with xend
ChangeSet 1.1527.2.1, 2005/05/24 18:47:14+01:00, cl349@xxxxxxxxxxxxxxxxxxxx
Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd.
Execute xc_linux_save in a seperate process so that it can't
crash xend. Also handle errors passed from xc_linux_save.
xen_domain.c:
Disable save in xfrd.
xc_save.c:
new file
Makefile:
Add xc_save.
XendDomainInfo.py:
Add suspended state and threading Condition with notification,
allowing
easy waiting for state changes.
XendDomain.py:
Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd. Set state to "suspended"
when detecting a suspended domain.
Fix reading output from subprocesses.
Fix ValueError in xen_domain().
xc.c:
Remove python binding for xc_linux_save.
xc_linux_save.c:
Implement the parts of vm save which need interaction with xend
as part of xend, instead of using xfrd. Also run xc_linux_save
in a seperate process.
xc_linux_restore.c:
Flush output so that xend picks it up timely.
Also disable debug output again.
xc.h:
Update xc_linux_save prototype and fix comments for
xc_linux_{save,restore}.
ignore:
Add tools/xcutils/xc_save.
xpopen.py:
Exit with 127 if exec fails.
Signed-off-by: Christian Limpach <Christian.Limpach@xxxxxxxxxxxx>
libxc/xc.h | 17 -
libxc/xc_linux_restore.c | 8
libxc/xc_linux_save.c | 339 ++++++++++++++++++--------------------
python/xen/lowlevel/xc/xc.c | 96 ----------
python/xen/util/xpopen.py | 2
python/xen/xend/XendDomain.py | 90 ++++++++--
python/xen/xend/XendDomainInfo.py | 16 +
xcutils/Makefile | 3
xcutils/xc_save.c | 29 +++
xfrd/xen_domain.c | 2
10 files changed, 302 insertions(+), 300 deletions(-)
diff -Nru a/tools/libxc/xc.h b/tools/libxc/xc.h
--- a/tools/libxc/xc.h 2005-05-24 14:02:18 -04:00
+++ b/tools/libxc/xc.h 2005-05-24 14:02:18 -04:00
@@ -225,23 +225,22 @@
struct XcIOContext;
/**
- * This function will save a domain running Linux to an IO context. This
- * IO context is currently a private interface making this function difficult
- * to call. It's interface will likely change in the future.
+ * This function will save a domain running Linux.
*
* @parm xc_handle a handle to an open hypervisor interface
- * @parm ioctxt the IO context to save a domain to
+ * @parm fd the file descriptor to save a domain to
+ * @parm dom the id of the domain
* @return 0 on success, -1 on failure
*/
-int xc_linux_save(int xc_handle, struct XcIOContext *ioctxt);
+int xc_linux_save(int xc_handle, int fd, u32 dom);
/**
- * This function will restore a saved domain running Linux to an IO context.
- * Like xc_linux_save(), this function uses a parameter who's structure is
- * privately defined. It's interface will also likely change.
+ * This function will restore a saved domain running Linux.
*
* @parm xc_handle a handle to an open hypervisor interface
- * @parm ioctxt the IO context to restore a domain from
+ * @parm fd the file descriptor to restore a domain from
+ * @parm dom the id of the domain
+ * @parm nr_pfns the number of pages
* @return 0 on success, -1 on failure
*/
int xc_linux_restore(int xc_handle, int io_fd, u32 dom, unsigned long nr_pfns);
diff -Nru a/tools/libxc/xc_linux_restore.c b/tools/libxc/xc_linux_restore.c
--- a/tools/libxc/xc_linux_restore.c 2005-05-24 14:02:19 -04:00
+++ b/tools/libxc/xc_linux_restore.c 2005-05-24 14:02:19 -04:00
@@ -11,23 +11,23 @@
#define MAX_BATCH_SIZE 1024
-#define DEBUG 01
+#define DEBUG 0
#if 1
-#define ERR(_f, _a...) fprintf ( stderr, _f , ## _a )
+#define ERR(_f, _a...) fprintf ( stderr, _f , ## _a ); fflush(stderr)
#else
#define ERR(_f, _a...) ((void)0)
#endif
#if DEBUG
-#define DPRINTF(_f, _a...) fprintf ( stdout, _f , ## _a )
+#define DPRINTF(_f, _a...) fprintf ( stdout, _f , ## _a ); fflush(stdout)
#else
#define DPRINTF(_f, _a...) ((void)0)
#endif
#define PROGRESS 0
#if PROGRESS
-#define PPRINTF(_f, _a...) fprintf ( stderr, _f , ## _a )
+#define PPRINTF(_f, _a...) fprintf ( stderr, _f , ## _a ); fflush(stderr)
#else
#define PPRINTF(_f, _a...)
#endif
diff -Nru a/tools/libxc/xc_linux_save.c b/tools/libxc/xc_linux_save.c
--- a/tools/libxc/xc_linux_save.c 2005-05-24 14:02:19 -04:00
+++ b/tools/libxc/xc_linux_save.c 2005-05-24 14:02:19 -04:00
@@ -17,19 +17,25 @@
#define MAX_MBIT_RATE 500
-#define DEBUG 0
-#define DDEBUG 0
+#define DEBUG 0
+
+#if 1
+#define ERR(_f, _a...) fprintf ( stderr, _f , ## _a )
+#else
+#define ERR(_f, _a...) ((void)0)
+#endif
#if DEBUG
-#define DPRINTF(_f, _a...) printf ( _f , ## _a )
+#define DPRINTF(_f, _a...) fprintf ( stderr, _f , ## _a )
#else
#define DPRINTF(_f, _a...) ((void)0)
#endif
-#if DDEBUG
-#define DDPRINTF(_f, _a...) printf ( _f , ## _a )
+#define PROGRESS 0
+#if PROGRESS
+#define PPRINTF(_f, _a...) fprintf ( stderr, _f , ## _a )
#else
-#define DDPRINTF(_f, _a...) ((void)0)
+#define PPRINTF(_f, _a...)
#endif
/*
@@ -144,7 +150,7 @@
}
-#define START_MBIT_RATE ioctxt->resource
+#define START_MBIT_RATE 0 //ioctxt->resource
static int mbit_rate, ombit_rate = 0;
static int burst_time_us = -1;
@@ -167,7 +173,8 @@
#define RATE_TO_BTU 781250
#define BURST_TIME_US burst_time_us
-static int xcio_ratewrite(XcIOContext *ioctxt, void *buf, int n)
+static int
+ratewrite(int io_fd, void *buf, int n)
{
static int budget = 0;
static struct timeval last_put = { 0 };
@@ -176,16 +183,15 @@
long long delta;
if (START_MBIT_RATE == 0)
- return xcio_write(ioctxt, buf, n);
+ return write(io_fd, buf, n);
budget -= n;
if (budget < 0) {
if (MBIT_RATE != ombit_rate) {
BURST_TIME_US = RATE_TO_BTU / MBIT_RATE;
ombit_rate = MBIT_RATE;
- xcio_info(ioctxt,
- "rate limit: %d mbit/s burst budget %d slot time %d\n",
- MBIT_RATE, BURST_BUDGET, BURST_TIME_US);
+ DPRINTF("rate limit: %d mbit/s burst budget %d slot time %d\n",
+ MBIT_RATE, BURST_BUDGET, BURST_TIME_US);
}
if (last_put.tv_sec == 0) {
budget += BURST_BUDGET;
@@ -213,7 +219,7 @@
}
}
}
- return xcio_write(ioctxt, buf, n);
+ return write(io_fd, buf, n);
}
static int print_stats( int xc_handle, u32 domid,
@@ -235,7 +241,7 @@
d1_cpu_now = xc_domain_get_cpu_usage(xc_handle, domid, /* FIXME */ 0)/1000;
if ( (d0_cpu_now == -1) || (d1_cpu_now == -1) )
- printf("ARRHHH!!\n");
+ fprintf(stderr, "ARRHHH!!\n");
wall_delta = tv_delta(&wall_now,&wall_last)/1000;
@@ -245,14 +251,15 @@
d1_cpu_delta = (d1_cpu_now - d1_cpu_last)/1000;
if ( print )
- printf("delta %lldms, dom0 %d%%, target %d%%, sent %dMb/s, "
- "dirtied %dMb/s %" PRId32 " pages\n",
- wall_delta,
- (int)((d0_cpu_delta*100)/wall_delta),
- (int)((d1_cpu_delta*100)/wall_delta),
- (int)((pages_sent*PAGE_SIZE)/(wall_delta*(1000/8))),
- (int)((stats->dirty_count*PAGE_SIZE)/(wall_delta*(1000/8))),
- stats->dirty_count);
+ fprintf(stderr,
+ "delta %lldms, dom0 %d%%, target %d%%, sent %dMb/s, "
+ "dirtied %dMb/s %" PRId32 " pages\n",
+ wall_delta,
+ (int)((d0_cpu_delta*100)/wall_delta),
+ (int)((d1_cpu_delta*100)/wall_delta),
+ (int)((pages_sent*PAGE_SIZE)/(wall_delta*(1000/8))),
+ (int)((stats->dirty_count*PAGE_SIZE)/(wall_delta*(1000/8))),
+ stats->dirty_count);
if (((stats->dirty_count*PAGE_SIZE)/(wall_delta*(1000/8))) > mbit_rate) {
mbit_rate = (int)((stats->dirty_count*PAGE_SIZE)/(wall_delta*(1000/8)))
@@ -268,24 +275,6 @@
return 0;
}
-/** Write the vmconfig string.
- * It is stored as a 4-byte count 'n' followed by n bytes.
- *
- * @param ioctxt i/o context
- * @return 0 on success, non-zero on error.
- */
-static int write_vmconfig(XcIOContext *ioctxt)
-{
- int err = -1;
- if(xcio_write(ioctxt, &ioctxt->vmconfig_n, sizeof(ioctxt->vmconfig_n)))
- goto exit;
- if(xcio_write(ioctxt, ioctxt->vmconfig, ioctxt->vmconfig_n))
- goto exit;
- err = 0;
- exit:
- return err;
-}
-
static int analysis_phase( int xc_handle, u32 domid,
int nr_pfns, unsigned long *arr, int runs )
{
@@ -302,7 +291,7 @@
xc_shadow_control( xc_handle, domid,
DOM0_SHADOW_CONTROL_OP_CLEAN,
arr, nr_pfns, NULL);
- printf("#Flush\n");
+ fprintf(stderr, "#Flush\n");
for ( i = 0; i < 40; i++ )
{
usleep(50000);
@@ -311,11 +300,11 @@
DOM0_SHADOW_CONTROL_OP_PEEK,
NULL, 0, &stats);
- printf("now= %lld faults= %" PRId32 " dirty= %" PRId32
- " dirty_net= %" PRId32 " dirty_block= %" PRId32"\n",
- ((now-start)+500)/1000,
- stats.fault_count, stats.dirty_count,
- stats.dirty_net_count, stats.dirty_block_count);
+ fprintf(stderr, "now= %lld faults= %" PRId32 " dirty= %" PRId32
+ " dirty_net= %" PRId32 " dirty_block= %" PRId32"\n",
+ ((now-start)+500)/1000,
+ stats.fault_count, stats.dirty_count,
+ stats.dirty_net_count, stats.dirty_block_count);
}
}
@@ -323,26 +312,36 @@
}
-int suspend_and_state(int xc_handle, XcIOContext *ioctxt,
+int suspend_and_state(int xc_handle, int io_fd, int dom,
xc_dominfo_t *info,
vcpu_guest_context_t *ctxt)
{
int i=0;
-
- xcio_suspend_domain(ioctxt);
+ char ans[30];
+
+ printf("suspend\n");
+ fflush(stdout);
+ if (fgets(ans, sizeof(ans), stdin) == NULL) {
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