snapraid/status.c
2013-12-28 09:10:00 +01:00

335 lines
8.8 KiB
C

/*
* Copyright (C) 2013 Andrea Mazzoleni
*
* 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 3 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.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "portable.h"
#include "util.h"
#include "elem.h"
#include "state.h"
#include "parity.h"
#include "handle.h"
#include "raid/raid.h"
/****************************************************************************/
/* status */
unsigned day_ago(time_t time, time_t now)
{
return (now - time) / (24 * 3600);
}
#define GRAPH_COLUMN 70
#define GRAPH_ROW 15
int state_status(struct snapraid_state* state)
{
block_off_t blockmax;
block_off_t i;
snapraid_info* infomap;
time_t now;
block_off_t bad;
block_off_t rehash;
block_off_t count;
unsigned dayoldest, daymedian, daynewest;
unsigned bar[GRAPH_COLUMN];
unsigned barpos;
unsigned barmax;
time_t oldest, newest, median;
unsigned x, y;
tommy_node* node_disk;
unsigned file_count;
unsigned file_fragmented;
unsigned extra_fragment;
uint64_t file_size;
unsigned unsynched_blocks;
/* get the present time */
now = time(0);
blockmax = parity_size(state);
/* count fragments */
file_count = 0;
file_size = 0;
file_fragmented = 0;
extra_fragment = 0;
for(node_disk=state->disklist;node_disk!=0;node_disk=node_disk->next) {
struct snapraid_disk* disk = node_disk->data;
tommy_node* node;
unsigned disk_file_count = 0;
unsigned disk_file_fragmented = 0;
unsigned disk_extra_fragment = 0;
uint64_t disk_file_size = 0;
/* for each file in the disk */
node = disk->filelist;
while (node) {
struct snapraid_file* file;
file = node->data;
node = node->next; /* next node */
/* check fragmentation */
if (file->size) {
block_off_t prev_pos;
int fragmented;
fragmented = 0;
prev_pos = file->blockvec[0].parity_pos;
for(i=1;i<file->blockmax;++i) {
block_off_t parity_pos = file->blockvec[i].parity_pos;
if (prev_pos + 1 != parity_pos) {
fragmented = 1;
++extra_fragment;
++disk_extra_fragment;
}
prev_pos = parity_pos;
}
if (fragmented) {
++file_fragmented;
++disk_file_fragmented;
}
}
/* count files */
++file_count;
++disk_file_count;
file_size += file->size;
disk_file_size += file->size;
}
fprintf(stdlog, "summary:disk_file_count:%s:%u\n", disk->name, disk_file_count);
fprintf(stdlog, "summary:disk_fragmented_file_count:%s:%u\n", disk->name, disk_file_fragmented);
fprintf(stdlog, "summary:disk_excess_fragment_count:%s:%u\n", disk->name, disk_extra_fragment);
fprintf(stdlog, "summary:disk_file_size:%s:%"PRIu64"\n", disk->name, disk_file_size);
}
printf("\n");
printf("Files: %u\n", file_count);
printf("Fragmented files: %u\n", file_fragmented);
printf("Excess fragments: %u\n", extra_fragment);
printf("Files size: %"PRIu64" GiB\n", file_size / (1024*1024*1024) );
printf("Parity size: %"PRIu64" GiB\n", blockmax * (uint64_t)state->block_size / (1024*1024*1024) );
printf("\n");
fprintf(stdlog, "summary:file_count:%u\n", file_count);
fprintf(stdlog, "summary:fragmented_file_count:%u\n", file_fragmented);
fprintf(stdlog, "summary:excess_fragment_count:%u\n", extra_fragment);
fprintf(stdlog, "summary:file_size:%"PRIu64"\n", file_size);
fprintf(stdlog, "summary:parity_size:%"PRIu64"\n", blockmax * (uint64_t)state->block_size);
fprintf(stdlog, "summary:hash:%s\n", hash_config_name(state->hash));
fprintf(stdlog, "summary:prev_hash:%s\n", hash_config_name(state->prevhash));
fprintf(stdlog, "summary:best_hash:%s\n", hash_config_name(state->besthash));
fprintf(stdlog, "summary:block_count:%u\n", blockmax);
fflush(stdlog);
/* copy the info a temp vector, and count bad/rehash/unsynched blocks */
infomap = malloc_nofail(blockmax * sizeof(snapraid_info));
bad = 0;
count = 0;
rehash = 0;
unsynched_blocks = 0;
for(i=0;i<blockmax;++i) {
int one_invalid;
int one_valid;
snapraid_info info = info_get(&state->infoarr, i);
/* for each disk */
one_invalid = 0;
one_valid = 0;
for(node_disk=state->disklist;node_disk!=0;node_disk=node_disk->next) {
struct snapraid_disk* disk = node_disk->data;
struct snapraid_block* block = disk_block_get(disk, i);
if (block_has_file(block))
one_valid = 1;
if (block_has_invalid_parity(block))
one_invalid = 1;
}
/* if both valid and invalid, we need to update */
if (one_invalid && one_valid) {
++unsynched_blocks;
}
/* skip unused blocks */
if (info != 0) {
if (info_get_bad(info))
++bad;
if (info_get_rehash(info))
++rehash;
infomap[count++] = info;
}
if (state->opt.gui) {
if (info != 0)
fprintf(stdlog, "block:%u:%"PRIu64":%s:%s:%s:%s\n", i, (uint64_t)info_get_time(info), one_valid ? "used": "", one_invalid ? "unsynched" : "", info_get_bad(info) ? "bad" : "", info_get_rehash(info) ? "rehash" : "");
else
fprintf(stdlog, "block_noinfo:%u:%s:%s\n", i, one_valid ? "used": "", one_invalid ? "unsynched" : "");
}
}
fprintf(stdlog, "summary:has_unsynched:%u\n", unsynched_blocks);
fprintf(stdlog, "summary:has_rehash:%u\n", rehash);
fprintf(stdlog, "summary:has_bad:%u\n", bad);
fprintf(stdlog, "summary:time_count:%u\n", count);
fflush(stdlog);
if (!count) {
fprintf(stderr, "The array is empty.\n");
free(infomap);
return 0;
}
/* sort the info to get the time info */
qsort(infomap, count, sizeof(snapraid_info), info_time_compare);
/* info for making the graph */
i = 0;
while (i < count) {
unsigned j = i + 1;
while (j < count && info_get_time(infomap[i]) == info_get_time(infomap[j]))
++j;
fprintf(stdlog, "time:%"PRIu64":%u\n", (uint64_t)info_get_time(infomap[i]), j - i);
i = j;
}
fflush(stdlog);
oldest = info_get_time(infomap[0]);
median = info_get_time(infomap[count / 2]);
newest = info_get_time(infomap[count - 1]);
dayoldest = day_ago(oldest, now);
daymedian = day_ago(median, now);
daynewest = day_ago(newest, now);
/* compute graph limits */
barpos = 0;
barmax = 0;
for(i=0;i<GRAPH_COLUMN;++i) {
time_t limit;
unsigned step;
limit = oldest + (newest - oldest) * (i+1) / GRAPH_COLUMN;
step = 0;
while (barpos < count && info_get_time(infomap[barpos]) <= limit) {
++barpos;
++step;
}
if (step > barmax)
barmax = step;
bar[i] = step;
}
/* print the graph */
for(y=0;y<GRAPH_ROW;++y) {
if (y == 0)
printf("%3u%% ", barmax * 100 / count);
else if (y == GRAPH_ROW - 1)
printf(" 0%% ");
else if (y == GRAPH_ROW/2)
printf("%3u%% ", barmax * 50 / count);
else
printf(" ");
for(x=0;x<GRAPH_COLUMN;++x) {
unsigned pivot = barmax * (GRAPH_ROW-y) / GRAPH_ROW;
/* if it's the baseline */
if (y == GRAPH_ROW-1) {
if (bar[x] >= pivot) {
printf("*");
} else if (bar[x] > 0) {
printf("+");
} else {
printf("_");
}
} else {
unsigned halfpivot = pivot - barmax / GRAPH_ROW / 2;
if (bar[x] >= pivot) {
printf("*");
} else if (bar[x] >= halfpivot) {
printf("+");
} else {
printf(" ");
}
}
}
printf("\n");
}
printf(" %3u days ago of the last scrub %3u\n", dayoldest, daynewest);
printf("\n");
printf("The oldest block was scrubbed %u days ago, the median %u, the newest %u.\n", dayoldest, daymedian, daynewest);
printf("\n");
if (unsynched_blocks) {
printf("WARNING! The array is NOT fully synched.\n");
printf("You have a sync in progress at %u%%.\n", (blockmax - unsynched_blocks) * 100 / blockmax);
} else {
printf("No sync is in progress.\n");
}
if (rehash) {
printf("You have a rehash in progress at %u%%.\n", (count - rehash) * 100 / count);
} else {
if (state->besthash != state->hash) {
printf("No rehash is in progress, but for optimal performance one is recommended.\n");
} else {
printf("No rehash is in progress or needed.\n");
}
}
if (bad) {
printf("DANGER! In the array there are %u silent errors!\n\n", bad);
printf("They are at blocks:");
/* print all the errors */
for(i=0;i<blockmax;++i) {
snapraid_info info = info_get(&state->infoarr, i);
/* skip unused blocks */
if (info == 0)
continue;
if (info_get_bad(info))
printf(" %u", i);
}
printf("\n\n");
printf("To fix them use the command 'snapraid -e fix'.\n");
printf("The errors will disapper from the 'status' at the next 'scrub' command.\n");
} else {
printf("No silent error detected.\n");
}
/* free the temp vector */
free(infomap);
return 0;
}