File libxc.migrate_tracking.patch of Package xen.17120
Track live migration state unconditionally in logfiles to see how long a domU was suspended.
Depends on libxc.sr.superpage.patch
--- a/tools/libxc/xc_domain.c
+++ b/tools/libxc/xc_domain.c
@@ -69,20 +69,26 @@ int xc_domain_cacheflush(xc_interface *x
int xc_domain_pause(xc_interface *xch,
uint32_t domid)
{
+ int ret;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_pausedomain;
domctl.domain = domid;
- return do_domctl(xch, &domctl);
+ ret = do_domctl(xch, &domctl);
+ SUSEINFO("domid %u: %s returned %d", domid, __func__, ret);
+ return ret;
}
int xc_domain_unpause(xc_interface *xch,
uint32_t domid)
{
+ int ret;
DECLARE_DOMCTL;
domctl.cmd = XEN_DOMCTL_unpausedomain;
domctl.domain = domid;
- return do_domctl(xch, &domctl);
+ ret = do_domctl(xch, &domctl);
+ SUSEINFO("domid %u: %s returned %d", domid, __func__, ret);
+ return ret;
}
--- a/tools/libxc/xc_private.h
+++ b/tools/libxc/xc_private.h
@@ -42,6 +42,11 @@
#include <xen-tools/libs.h>
+#define SUSEINFO(_m, _a...) do { int ERROR_errno = errno; \
+ xc_report(xch, xch->error_handler, XTL_ERROR, XC_ERROR_NONE, "SUSEINFO: " _m , ## _a ); \
+ errno = ERROR_errno; \
+ } while (0)
+
#if defined(HAVE_VALGRIND_MEMCHECK_H) && !defined(NDEBUG) && !defined(__MINIOS__)
/* Compile in Valgrind client requests? */
#include <valgrind/memcheck.h>
--- a/tools/libxc/xc_resume.c
+++ b/tools/libxc/xc_resume.c
@@ -284,7 +284,9 @@ out:
*/
int xc_domain_resume(xc_interface *xch, uint32_t domid, int fast)
{
- return (fast
+ int ret = (fast
? xc_domain_resume_cooperative(xch, domid)
: xc_domain_resume_any(xch, domid));
+ SUSEINFO("domid %u: %s%s returned %d", domid, __func__, fast ? " fast" : "", ret);
+ return ret;
}
--- a/tools/libxc/xc_sr_common.c
+++ b/tools/libxc/xc_sr_common.c
@@ -196,6 +196,65 @@ bool _xc_sr_bitmap_resize(struct xc_sr_b
return true;
}
+/* Write a two-character hex representation of 'byte' to digits[].
+ Pre-condition: sizeof(digits) >= 2 */
+static void byte_to_hex(char *digits, const uint8_t byte)
+{
+ uint8_t nybbel = byte >> 4;
+
+ if ( nybbel > 9 )
+ digits[0] = 'a' + nybbel-10;
+ else
+ digits[0] = '0' + nybbel;
+
+ nybbel = byte & 0x0f;
+ if ( nybbel > 9 )
+ digits[1] = 'a' + nybbel-10;
+ else
+ digits[1] = '0' + nybbel;
+}
+
+/* Convert an array of 16 unsigned bytes to a DCE/OSF formatted UUID
+ string.
+
+ Pre-condition: sizeof(dest) >= 37 */
+void sr_uuid_to_string(char *dest, const uint8_t *uuid)
+{
+ int i = 0;
+ char *p = dest;
+
+ for (; i < 4; i++ )
+ {
+ byte_to_hex(p, uuid[i]);
+ p += 2;
+ }
+ *p++ = '-';
+ for (; i < 6; i++ )
+ {
+ byte_to_hex(p, uuid[i]);
+ p += 2;
+ }
+ *p++ = '-';
+ for (; i < 8; i++ )
+ {
+ byte_to_hex(p, uuid[i]);
+ p += 2;
+ }
+ *p++ = '-';
+ for (; i < 10; i++ )
+ {
+ byte_to_hex(p, uuid[i]);
+ p += 2;
+ }
+ *p++ = '-';
+ for (; i < 16; i++ )
+ {
+ byte_to_hex(p, uuid[i]);
+ p += 2;
+ }
+ *p = '\0';
+}
+
/*
* Local variables:
* mode: C
--- a/tools/libxc/xc_sr_common.h
+++ b/tools/libxc/xc_sr_common.h
@@ -195,6 +195,7 @@ struct xc_sr_context
int fd;
xc_dominfo_t dominfo;
+ char uuid[16*2+4+1];
union /* Common save or restore data. */
{
@@ -427,6 +428,8 @@ static inline int pfn_set_populated(stru
return 0;
}
+extern void sr_uuid_to_string(char *dest, const uint8_t *uuid);
+
struct xc_sr_record
{
uint32_t type;
--- a/tools/libxc/xc_sr_restore.c
+++ b/tools/libxc/xc_sr_restore.c
@@ -608,6 +608,7 @@ static int restore(struct xc_sr_context
struct xc_sr_record rec;
int rc, saved_rc = 0, saved_errno = 0;
+ SUSEINFO("domid %u: %s %s start", ctx->domid, ctx->uuid, __func__);
IPRINTF("Restoring domain");
rc = setup(ctx);
@@ -684,6 +685,7 @@ static int restore(struct xc_sr_context
PERROR("Restore failed");
done:
+ SUSEINFO("domid %u: %s done", ctx->domid, __func__);
cleanup(ctx);
if ( saved_rc )
@@ -748,6 +750,7 @@ int xc_domain_restore(xc_interface *xch,
}
ctx.domid = dom;
+ sr_uuid_to_string(ctx.uuid, ctx.dominfo.handle);
if ( read_headers(&ctx) )
return -1;
--- a/tools/libxc/xc_sr_save.c
+++ b/tools/libxc/xc_sr_save.c
@@ -852,6 +852,7 @@ static int save(struct xc_sr_context *ct
xc_interface *xch = ctx->xch;
int rc, saved_rc = 0, saved_errno = 0;
+ SUSEINFO("domid %u: %s %s start, %lu pages allocated", ctx->domid, ctx->uuid, __func__, ctx->dominfo.nr_pages);
IPRINTF("Saving domain %d, type %s",
ctx->domid, dhdr_type_to_str(guest_type));
@@ -964,6 +965,7 @@ static int save(struct xc_sr_context *ct
PERROR("Save failed");
done:
+ SUSEINFO("domid %u: %s done", ctx->domid, __func__);
cleanup(ctx);
if ( saved_rc )
@@ -1019,6 +1021,10 @@ static int suse_precopy_policy(struct pr
goto out;
}
/* Keep going */
+ if ( stats.dirty_count >= 0 )
+ SUSEINFO("domid %u: dirty pages %ld after iteration %u/%u",
+ suse_flags.ctx->domid,
+ suse_flags.dirty_count, stats.iteration, suse_flags.max_iters);
return XGS_POLICY_CONTINUE_PRECOPY;
out:
@@ -1032,6 +1038,8 @@ out:
return XGS_POLICY_ABORT;
}
suspend:
+ SUSEINFO("domid %u: suspending, remaining dirty pages %ld prior final transit",
+ suse_flags.ctx->domid, suse_flags.dirty_count);
return XGS_POLICY_STOP_AND_COPY;
}
@@ -1095,6 +1103,7 @@ int xc_domain_save_suse(xc_interface *xc
}
ctx.domid = dom;
+ sr_uuid_to_string(ctx.uuid, ctx.dominfo.handle);
if ( ctx.dominfo.hvm )
{
