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print_info.c
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print_info.c
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/*
* print_info.c
*
* Copyright (C) 2011 NEC Corporation
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*/
#include "print_info.h"
#include <time.h>
#include <string.h>
#define PROGRESS_MAXLEN "50"
#define NSEC_PER_SEC 1000000000L
int message_level;
int flag_strerr_message;
int flag_ignore_r_char; /* 0: '\r' is effective. 1: not effective. */
void
show_version(void)
{
MSG("makedumpfile: version " VERSION " (released on " RELEASE_DATE ")\n");
#ifdef USELZO
MSG("lzo\tenabled\n");
#else
MSG("lzo\tdisabled\n");
#endif
#ifdef USESNAPPY
MSG("snappy\tenabled\n");
#else
MSG("snappy\tdisabled\n");
#endif
MSG("\n");
}
void
print_usage(void)
{
MSG("\n");
MSG("LZO support:\n");
#ifdef USELZO
MSG(" enabled\n");
#else
MSG(" disabled ('-l' option will be ignored.)\n");
#endif
MSG("snappy support:\n");
#ifdef USESNAPPY
MSG(" enabled\n");
#else
MSG(" disabled ('-p' option will be ignored.)\n");
#endif
MSG("\n");
MSG("Usage:\n");
MSG(" Creating DUMPFILE:\n");
MSG(" # makedumpfile [-c|-l|-p|-E] [-d DL] [-e] [-x VMLINUX|-i VMCOREINFO] VMCORE\n");
MSG(" DUMPFILE\n");
MSG("\n");
MSG(" Creating DUMPFILE with filtered kernel data specified through filter config\n");
MSG(" file or eppic macro:\n");
MSG(" # makedumpfile [-c|-l|-p|-E] [-d DL] -x VMLINUX [--config FILTERCONFIGFILE]\n");
MSG(" [--eppic EPPICMACRO] VMCORE DUMPFILE\n");
MSG("\n");
MSG(" Outputting the dump data in the flattened format to the standard output:\n");
MSG(" # makedumpfile -F [-c|-l|-p|-E] [-d DL] [-x VMLINUX|-i VMCOREINFO] VMCORE\n");
MSG("\n");
MSG(" Rearranging the dump data in the flattened format to a readable DUMPFILE:\n");
MSG(" # makedumpfile -R DUMPFILE\n");
MSG("\n");
MSG(" Split the dump data to multiple DUMPFILEs in parallel:\n");
MSG(" # makedumpfile --split [OPTION] [-x VMLINUX|-i VMCOREINFO] VMCORE DUMPFILE1\n");
MSG(" DUMPFILE2 [DUMPFILE3 ..]\n");
MSG("\n");
MSG(" Using multiple threads to create DUMPFILE in parallel:\n");
MSG(" # makedumpfile [OPTION] [-x VMLINUX|-i VMCOREINFO] --num-threads THREADNUM\n");
MSG(" VMCORE DUMPFILE1\n");
MSG("\n");
MSG(" Reassemble multiple DUMPFILEs:\n");
MSG(" # makedumpfile --reassemble DUMPFILE1 DUMPFILE2 [DUMPFILE3 ..] DUMPFILE\n");
MSG("\n");
MSG(" Generating VMCOREINFO:\n");
MSG(" # makedumpfile -g VMCOREINFO -x VMLINUX\n");
MSG("\n");
MSG(" Extracting the dmesg log from a VMCORE:\n");
MSG(" # makedumpfile --dump-dmesg [-x VMLINUX|-i VMCOREINFO] VMCORE LOGFILE\n");
MSG("\n");
MSG("\n");
MSG(" Creating DUMPFILE of Xen:\n");
MSG(" # makedumpfile [-c|-l|-p|-E] [--xen-syms XEN-SYMS|--xen-vmcoreinfo VMCOREINFO]\n");
MSG(" VMCORE DUMPFILE\n");
MSG("\n");
MSG(" Filtering domain-0 of Xen:\n");
MSG(" # makedumpfile [-c|-l|-p|-E] -d DL -x vmlinux VMCORE DUMPFILE\n");
MSG("\n");
MSG(" Generating VMCOREINFO of Xen:\n");
MSG(" # makedumpfile -g VMCOREINFO --xen-syms XEN-SYMS\n");
MSG("\n");
MSG("\n");
MSG(" Creating DUMPFILE from multiple VMCOREs generated on sadump diskset configuration:\n");
MSG(" # makedumpfile [-c|-l|-p] [-d DL] -x VMLINUX --diskset=VMCORE1 --diskset=VMCORE2\n");
MSG(" [--diskset=VMCORE3 ..] DUMPFILE\n");
MSG("\n");
MSG("\n");
MSG("Available options:\n");
MSG(" [-c|-l|-p]:\n");
MSG(" Compress dump data by each page using zlib for -c option, lzo for -l option\n");
MSG(" or snappy for -p option. A user cannot specify either of these options with\n");
MSG(" -E option, because the ELF format does not support compressed data.\n");
MSG(" THIS IS ONLY FOR THE CRASH UTILITY.\n");
MSG("\n");
MSG(" [-e]:\n");
MSG(" Exclude the page structures (vmemmap) which represent excluded pages.\n");
MSG(" This greatly shortens the dump of a very large memory system.\n");
MSG(" The --work-dir option must also be specified, as it will be used\n");
MSG(" to hold bitmaps and a file of page numbers that are to be excluded.\n");
MSG(" The -e option will cause a noncyclic dump procedure.\n");
MSG(" This option is only for x86_64.\n");
MSG("\n");
MSG(" [-d DL]:\n");
MSG(" Specify the type of unnecessary page for analysis.\n");
MSG(" Pages of the specified type are not copied to DUMPFILE. The page type\n");
MSG(" marked in the following table is excluded. A user can specify multiple\n");
MSG(" page types by setting the sum of each page type for Dump_Level (DL).\n");
MSG(" The maximum of Dump_Level is 31.\n");
MSG(" Note that Dump_Level for Xen dump filtering is 0 or 1 except on x86_64\n");
MSG("\n");
MSG(" | non-\n");
MSG(" Dump | zero private private user free\n");
MSG(" Level | page cache cache data page\n");
MSG(" -------+---------------------------------------\n");
MSG(" 0 |\n");
MSG(" 1 | X\n");
MSG(" 2 | X\n");
MSG(" 4 | X X\n");
MSG(" 8 | X\n");
MSG(" 16 | X\n");
MSG(" 31 | X X X X X\n");
MSG("\n");
MSG(" [-E]:\n");
MSG(" Create DUMPFILE in the ELF format.\n");
MSG(" This option cannot be specified with the -c, -l or -p options,\n");
MSG(" because the ELF format does not support compressed data.\n");
MSG("\n");
MSG(" [-x VMLINUX]:\n");
MSG(" Specify the first kernel's VMLINUX to analyze the first kernel's\n");
MSG(" memory usage.\n");
MSG(" The page size of the first kernel and the second kernel should match.\n");
MSG("\n");
MSG(" [-i VMCOREINFO]:\n");
MSG(" Specify VMCOREINFO instead of VMLINUX for analyzing the first kernel's\n");
MSG(" memory usage.\n");
MSG(" VMCOREINFO should be made beforehand by makedumpfile with -g option,\n");
MSG(" and it contains the first kernel's information. This option is necessary\n");
MSG(" if VMCORE does not contain VMCOREINFO, [-x VMLINUX] is not specified,\n");
MSG(" and dump_level is 2 or more.\n");
MSG("\n");
MSG(" [-g VMCOREINFO]:\n");
MSG(" Generate VMCOREINFO from the first kernel's VMLINUX.\n");
MSG(" VMCOREINFO must be generated on the system that is running the first\n");
MSG(" kernel. With -i option, a user can specify VMCOREINFO generated on the\n");
MSG(" other system that is running the same first kernel. [-x VMLINUX] must\n");
MSG(" be specified.\n");
MSG("\n");
MSG(" [--config FILTERCONFIGFILE]:\n");
MSG(" Used in conjunction with -x VMLINUX option, to specify the filter config\n");
MSG(" file that contains filter commands to filter out desired kernel data\n");
MSG(" from vmcore while creating DUMPFILE.\n");
MSG("\n");
MSG(" [--eppic EPPICMACRO]:\n");
MSG(" Used in conjunction with -x VMLINUX option, to specify the eppic macro\n");
MSG(" file that contains filter rules or directory that contains eppic macro\n");
MSG(" files to filter out desired kernel data from vmcore while creating DUMPFILE.\n");
MSG(" When directory is specified, all the eppic macros in the directory are\n");
MSG(" processed\n");
MSG("\n");
MSG(" [-F]:\n");
MSG(" Output the dump data in the flattened format to the standard output\n");
MSG(" for transporting the dump data by SSH.\n");
MSG(" Analysis tools cannot read the flattened format directly. For analysis,\n");
MSG(" the dump data in the flattened format should be rearranged to a readable\n");
MSG(" DUMPFILE by -R option.\n");
MSG("\n");
MSG(" [-R]:\n");
MSG(" Rearrange the dump data in the flattened format from the standard input\n");
MSG(" to a readable DUMPFILE.\n");
MSG("\n");
MSG(" [--split]:\n");
MSG(" Split the dump data to multiple DUMPFILEs in parallel. If specifying\n");
MSG(" DUMPFILEs on different storage devices, a device can share I/O load with\n");
MSG(" other devices and it reduces time for saving the dump data. The file size\n");
MSG(" of each DUMPFILE is smaller than the system memory size which is divided\n");
MSG(" by the number of DUMPFILEs.\n");
MSG(" This feature supports only the kdump-compressed format.\n");
MSG("\n");
MSG(" [--num-threads THREADNUM]:\n");
MSG(" Using multiple threads to read and compress data of each page in parallel.\n");
MSG(" And it will reduces time for saving DUMPFILE.\n");
MSG(" Note that if the usable cpu number is less than the thread number, it may\n");
MSG(" lead to great performance degradation.\n");
MSG(" This feature only supports creating DUMPFILE in kdump-compressed format from\n");
MSG(" VMCORE in kdump-compressed format or elf format.\n");
MSG("\n");
MSG(" [--reassemble]:\n");
MSG(" Reassemble multiple DUMPFILEs, which are created by --split option,\n");
MSG(" into one DUMPFILE. dumpfile1 and dumpfile2 are reassembled into dumpfile.\n");
MSG("\n");
MSG(" [-b <order>]\n");
MSG(" Specify the cache 2^order pages in ram when generating DUMPFILE before\n");
MSG(" writing to output. The default value is 4.\n");
MSG("\n");
MSG(" [--cyclic-buffer BUFFER_SIZE]:\n");
MSG(" Specify the buffer size in kilo bytes for bitmap data.\n");
MSG(" Filtering processing will be divided into multi cycles to fix the memory\n");
MSG(" consumption, the number of cycles is represented as:\n");
MSG("\n");
MSG(" num_of_cycles = system_memory / \n");
MSG(" (BUFFER_SIZE * 1024 * bit_per_bytes * page_size)\n");
MSG("\n");
MSG(" The lesser number of cycles, the faster working speed is expected.\n");
MSG(" By default, BUFFER_SIZE will be calculated automatically depending on\n");
MSG(" system memory size, so ordinary users don't need to specify this option.\n");
MSG("\n");
MSG(" [--splitblock-size SPLITBLOCK_SIZE]:\n");
MSG(" Specify the splitblock size in kilo bytes for analysis with --split.\n");
MSG(" If --splitblock N is specified, difference of each splitted dumpfile\n");
MSG(" size is at most N kilo bytes.\n");
MSG("\n");
MSG(" [--work-dir]:\n");
MSG(" Specify the working directory for the temporary bitmap file.\n");
MSG(" If this option isn't specified, the bitmap will be saved on memory.\n");
MSG(" Filtering processing has to do 2 pass scanning to fix the memory consumption,\n");
MSG(" but it can be avoided by using working directory on file system.\n");
MSG(" So if you specify this option, the filtering speed may be bit faster.\n");
MSG("\n");
MSG(" [--non-mmap]:\n");
MSG(" Never use mmap(2) to read VMCORE even if it supports mmap(2).\n");
MSG(" Generally, reading VMCORE with mmap(2) is faster than without it,\n");
MSG(" so ordinary users don't need to specify this option.\n");
MSG(" This option is mainly for debugging.\n");
MSG("\n");
MSG(" [--xen-syms XEN-SYMS]:\n");
MSG(" Specify the XEN-SYMS to analyze Xen's memory usage.\n");
MSG("\n");
MSG(" [--xen-vmcoreinfo VMCOREINFO]:\n");
MSG(" Specify the VMCOREINFO of Xen to analyze Xen's memory usage.\n");
MSG("\n");
MSG(" [--xen_phys_start XEN_PHYS_START_ADDRESS]:\n");
MSG(" This option is only for x86_64.\n");
MSG(" Specify the XEN_PHYS_START_ADDRESS, if the xen code/data is relocatable\n");
MSG(" and VMCORE does not contain XEN_PHYS_START_ADDRESS in the CRASHINFO.\n");
MSG("\n");
MSG(" [-X]:\n");
MSG(" Exclude all the user domain pages from Xen kdump's VMCORE, and extract\n");
MSG(" the part of Xen and domain-0.\n");
MSG("\n");
MSG(" [--diskset=VMCORE]:\n");
MSG(" Specify multiple VMCOREs created on sadump diskset configuration the same\n");
MSG(" number of times as the number of VMCOREs in increasing order from left to\n");
MSG(" right.\n");
MSG("\n");
MSG(" [--message-level ML]:\n");
MSG(" Specify the message types.\n");
MSG(" Users can restrict output printed by specifying Message_Level (ML) with\n");
MSG(" this option. The message type marked with an X in the following table is\n");
MSG(" printed. For example, according to the table, specifying 7 as ML means\n");
MSG(" progress indicator, common message, and error message are printed, and\n");
MSG(" this is a default value.\n");
MSG(" Note that the maximum value of message_level is 31.\n");
MSG("\n");
MSG(" Message | progress common error debug report\n");
MSG(" Level | indicator message message message message\n");
MSG(" ---------+------------------------------------------------------\n");
MSG(" 0 |\n");
MSG(" 1 | X\n");
MSG(" 2 | X\n");
MSG(" 4 | X\n");
MSG(" * 7 | X X X\n");
MSG(" 8 | X\n");
MSG(" 16 | X\n");
MSG(" 31 | X X X X X\n");
MSG("\n");
MSG(" [--vtop VIRTUAL_ADDRESS]:\n");
MSG(" This option is useful, when user debugs the translation problem\n");
MSG(" of virtual address. If specifying the VIRTUAL_ADDRESS, its physical\n");
MSG(" address is printed.\n");
MSG("\n");
MSG(" [--dump-dmesg]:\n");
MSG(" This option overrides the normal behavior of makedumpfile. Instead of\n");
MSG(" compressing and filtering a VMCORE to make it smaller, it simply\n");
MSG(" extracts the dmesg log from a VMCORE and writes it to the specified\n");
MSG(" LOGFILE. If a VMCORE does not contain VMCOREINFO for dmesg, it is\n");
MSG(" necessary to specify [-x VMLINUX] or [-i VMCOREINFO].\n");
MSG("\n");
MSG(" [--mem-usage]:\n");
MSG(" This option is currently supported on x86_64, arm64, ppc64 and s390x.\n");
MSG(" This option is used to show the page numbers of current system in different\n");
MSG(" use. It should be executed in 1st kernel. By the help of this, user can know\n");
MSG(" how many pages is dumpable when different dump_level is specified. It analyzes\n");
MSG(" the 'System Ram' and 'kernel text' program segment of /proc/kcore excluding\n");
MSG(" the crashkernel range, then calculates the page number of different kind per\n");
MSG(" vmcoreinfo. So currently /proc/kcore need be specified explicitly.\n");
MSG("\n");
MSG(" [-D]:\n");
MSG(" Print debugging message.\n");
MSG("\n");
MSG(" [-f]:\n");
MSG(" Overwrite DUMPFILE even if it already exists.\n");
MSG(" Force mem-usage to work with older kernel as well.\n");
MSG("\n");
MSG(" [-h, --help]:\n");
MSG(" Show help message and LZO/snappy support status (enabled/disabled).\n");
MSG("\n");
MSG(" [-v]:\n");
MSG(" Show the version of makedumpfile.\n");
MSG("\n");
MSG(" VMLINUX:\n");
MSG(" This is a pathname to the first kernel's vmlinux.\n");
MSG(" This file must have the debug information of the first kernel to analyze\n");
MSG(" the first kernel's memory usage.\n");
MSG("\n");
MSG(" VMCORE:\n");
MSG(" This is a pathname to the first kernel's memory core image.\n");
MSG(" This argument is generally /proc/vmcore.\n");
MSG("\n");
MSG(" DUMPFILE:\n");
MSG(" This is a pathname to a file created by this command.\n");
MSG("\n");
MSG(" XEN-SYMS:\n");
MSG(" This is a pathname to the xen-syms.\n");
MSG(" This file must have the debug information of Xen to analyze\n");
MSG(" Xen's memory usage.\n");
MSG("\n");
}
static void calc_delta(struct timespec *ts_start, struct timespec *delta)
{
struct timespec ts_end;
clock_gettime(CLOCK_MONOTONIC, &ts_end);
delta->tv_sec = ts_end.tv_sec - ts_start->tv_sec;
delta->tv_nsec = ts_end.tv_nsec - ts_start->tv_nsec;
if (delta->tv_nsec < 0) {
delta->tv_sec--;
delta->tv_nsec += NSEC_PER_SEC;
}
}
/* produce less than 12 bytes on msg */
static int eta_to_human_short (unsigned long secs, char* msg)
{
strcpy(msg, "eta: ");
msg += strlen("eta: ");
if (secs < 100)
sprintf(msg, "%lus", secs);
else if (secs < 100 * 60)
sprintf(msg, "%lum%lus", secs / 60, secs % 60);
else if (secs < 48 * 3600)
sprintf(msg, "%luh%lum", secs / 3600, (secs / 60) % 60);
else if (secs < 100 * 86400)
sprintf(msg, "%lud%luh", secs / 86400, (secs / 3600) % 24);
else
sprintf(msg, ">2day");
return 0;
}
void
print_progress(const char *msg, unsigned long current, unsigned long end, struct timespec *start)
{
unsigned progress; /* in promilles (tenths of a percent) */
time_t tm;
static time_t last_time = 0;
static unsigned int lapse = 0;
static const char *spinner = "/|\\-";
struct timespec delta;
unsigned long eta;
char eta_msg[16] = " ";
if (current < end) {
tm = time(NULL);
if (tm - last_time < 1)
return;
last_time = tm;
progress = current * 1000 / end;
} else
progress = 1000;
if (start != NULL && progress != 0) {
calc_delta(start, &delta);
eta = 1000 * delta.tv_sec + delta.tv_nsec / (NSEC_PER_SEC / 1000);
eta = eta / progress - delta.tv_sec;
eta_to_human_short(eta, eta_msg);
}
if (flag_ignore_r_char) {
PROGRESS_MSG("%-" PROGRESS_MAXLEN "s: [%3u.%u %%] %c %16s\n",
msg, progress / 10, progress % 10,
spinner[lapse % 4], eta_msg);
} else {
PROGRESS_MSG("\r");
PROGRESS_MSG("%-" PROGRESS_MAXLEN "s: [%3u.%u %%] %c %16s",
msg, progress / 10, progress % 10,
spinner[lapse % 4], eta_msg);
}
lapse++;
}
void
print_execution_time(char *step_name, struct timespec *ts_start)
{
struct timespec delta;
calc_delta(ts_start, &delta);
REPORT_MSG("STEP [%s] : %ld.%06ld seconds\n",
step_name, delta.tv_sec, delta.tv_nsec / 1000);
}