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xen.30330
libxc.migrate_tracking.patch
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File libxc.migrate_tracking.patch of Package xen.30330
Track live migration state unconditionally in logfiles to see how long a domU was suspended. Depends on libxc.sr.superpage.patch --- a/tools/libs/toollog/include/xentoollog.h +++ b/tools/libs/toollog/include/xentoollog.h @@ -133,6 +133,7 @@ const char *xtl_level_to_string(xentooll }); +#define XL_NO_SUSEINFO "XL_NO_SUSEINFO" #endif /* XENTOOLLOG_H */ /* --- a/tools/libxc/xc_domain.c +++ b/tools/libxc/xc_domain.c @@ -69,20 +69,28 @@ 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); + if (getenv(XL_NO_SUSEINFO) == NULL) + 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); + if (getenv(XL_NO_SUSEINFO) == NULL) + 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 +42,15 @@ #include <xen-tools/libs.h> +/* + * Using loglevel ERROR to make sure the intended informational messages appear + * in libvirts libxl-driver.log + */ +#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 +284,10 @@ 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)); + if (getenv(XL_NO_SUSEINFO) == NULL) + 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, %ld remaining dirty pages 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 ) { --- a/tools/xl/xl.c +++ b/tools/xl/xl.c @@ -388,6 +388,8 @@ int main(int argc, char **argv) (progress_use_cr ? XTL_STDIOSTREAM_PROGRESS_USE_CR : 0)); if (!logger) exit(EXIT_FAILURE); + /* Provide context to libxl and libxc: no SUSEINFO() from xl */ + setenv(XL_NO_SUSEINFO, "1", 0); xl_ctx_alloc(); atexit(xl_ctx_free);
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