/*
* read the arena header and trailer blocks from disk
*/
static int
loadarena(Arena *arena)
{
ArenaHead head;
ZBlock *b;
b = alloczblock(arena->blocksize, 0, arena->part->blocksize);
if(b == nil)
return -1;
if(readpart(arena->part, arena->base + arena->size, b->data, arena->blocksize) < 0){
freezblock(b);
return -1;
}
if(unpackarena(arena, b->data) < 0){
freezblock(b);
return -1;
}
if(arena->version != ArenaVersion4 && arena->version != ArenaVersion5){
seterr(EAdmin, "unknown arena version %d", arena->version);
freezblock(b);
return -1;
}
scorecp(arena->score, &b->data[arena->blocksize - VtScoreSize]);
if(readpart(arena->part, arena->base - arena->blocksize, b->data, arena->blocksize) < 0){
logerr(EAdmin, "can't read arena header: %r");
freezblock(b);
return 0;
}
if(unpackarenahead(&head, b->data) < 0)
logerr(ECorrupt, "corrupted arena header: %r");
else if(namecmp(arena->name, head.name)!=0
|| arena->clumpmagic != head.clumpmagic
|| arena->version != head.version
|| arena->blocksize != head.blocksize
|| arena->size + 2 * arena->blocksize != head.size){
if(namecmp(arena->name, head.name)!=0)
logerr(ECorrupt, "arena tail name %s head %s",
arena->name, head.name);
else if(arena->clumpmagic != head.clumpmagic)
logerr(ECorrupt, "arena %d tail clumpmagic 0x%lux head 0x%lux",
debugarena, (uint32_t)arena->clumpmagic,
(uint32_t)head.clumpmagic);
else if(arena->version != head.version)
logerr(ECorrupt, "arena tail version %d head version %d",
arena->version, head.version);
else if(arena->blocksize != head.blocksize)
logerr(ECorrupt, "arena tail block size %d head %d",
arena->blocksize, head.blocksize);
else if(arena->size+2*arena->blocksize != head.size)
logerr(ECorrupt, "arena tail size %lud head %lud",
(uint32_t)arena->size+2*arena->blocksize,
head.size);
else
logerr(ECorrupt, "arena header inconsistent with arena data");
}
freezblock(b);
return 0;
}
static int
printheader(char *name, ArenaHead *head, int fd)
{
Arena arena;
vlong baseoff, lo, hi, off;
int clumpmax;
off = seek(fd, 0, 1);
seek(fd, off + head->size - head->blocksize, 0);
if(readblock(fd, data, head->blocksize) < 0){
fprint(2, "%s: reading arena tail: %r\n", name);
return -1;
}
seek(fd, off, 0);
memset(&arena, 0, sizeof arena);
if(unpackarena(&arena, data) < 0){
fprint(2, "%s: unpack arena tail: %r\n", name);
return -1;
}
arena.blocksize = head->blocksize;
arena.base = off + head->blocksize;
arena.clumpmax = arena.blocksize / ClumpInfoSize;
arena.size = head->size - 2*head->blocksize;
fprint(2, "%s: base=%llx size=%llx blocksize=%x\n", name, off, head->size, head->blocksize);
baseoff = head->blocksize;
fprint(2, "\t%llx-%llx: head\n", (vlong)0, baseoff);
lo = baseoff;
hi = baseoff + arena.diskstats.used;
fprint(2, "\t%llx-%llx: data (%llx)\n", lo, hi, hi - lo);
hi = head->size - head->blocksize;
clumpmax = head->blocksize / ClumpInfoSize;
if(clumpmax > 0)
lo = hi - (u64int)arena.diskstats.clumps/clumpmax * head->blocksize;
else
lo = hi;
fprint(2, "\t%llx-%llx: clumps (%llx)\n", lo, hi, hi - lo);
fprint(2, "\t%llx-%llx: tail\n", hi, hi + head->blocksize);
fprint(2, "arena:\n");
printarena(2, &arena);
return 0;
}
static int
diskarenapart(HConnect *c, char *disk, Part *p)
{
char *arenaname;
ArenaPart ap;
ArenaHead head;
Arena arena;
char *table;
char *score;
char *clump;
uchar *blk;
vlong start, end, off;
char tbuf[60];
hprint(&c->hout, "<h1>arena partition %s</h1>\n", disk);
if((table = readap(p, &ap)) == nil){
hprint(&c->hout, "%r\n");
goto out;
}
hprint(&c->hout, "<pre>\n");
hprint(&c->hout, "version=%d blocksize=%d base=%d\n",
ap.version, ap.blocksize, ap.arenabase);
hprint(&c->hout, "</pre>\n");
arenaname = hargstr(c, "arena", "");
if(arenaname[0] == 0){
diskarenatable(c, disk, table);
goto out;
}
if(xfindarena(table, arenaname, &start, &end) < 0){
hprint(&c->hout, "no such arena %s\n", arenaname);
goto out;
}
hprint(&c->hout, "<h2>arena %s</h2>\n", arenaname);
hprint(&c->hout, "<pre>start=%#llx end=%#llx<pre>\n", start, end);
if(end < start || end - start < HeadSize){
hprint(&c->hout, "bad size %#llx\n", end - start);
goto out;
}
// read arena header, tail
blk = vtmalloc(HeadSize);
if(readpart(p, start, blk, HeadSize) != HeadSize){
hprint(&c->hout, "reading header: %r\n");
vtfree(blk);
goto out;
}
if(unpackarenahead(&head, blk) < 0){
hprint(&c->hout, "corrupt arena header: %r\n");
// hhex(blk, HeadSize);
vtfree(blk);
goto out;
}
vtfree(blk);
hprint(&c->hout, "head:\n<pre>\n");
hprint(&c->hout, "version=%d name=%s blocksize=%d size=%#llx clumpmagic=%#ux\n",
head.version, head.name, head.blocksize, head.size,
head.clumpmagic);
hprint(&c->hout, "</pre><br><br>\n");
if(head.blocksize > MaxIoSize || head.blocksize >= end - start){
hprint(&c->hout, "corrupt block size %d\n", head.blocksize);
goto out;
}
blk = vtmalloc(head.blocksize);
if(readpart(p, end - head.blocksize, blk, head.blocksize) < 0){
hprint(&c->hout, "reading tail: %r\n");
vtfree(blk);
goto out;
}
memset(&arena, 0, sizeof arena);
arena.part = p;
arena.blocksize = head.blocksize;
arena.clumpmax = head.blocksize / ClumpInfoSize;
arena.base = start + head.blocksize;
arena.size = end - start - 2 * head.blocksize;
if(unpackarena(&arena, blk) < 0){
vtfree(blk);
goto out;
}
scorecp(arena.score, blk+head.blocksize - VtScoreSize);
vtfree(blk);
hprint(&c->hout, "tail:\n<pre>\n");
hprint(&c->hout, "version=%d name=%s\n", arena.version, arena.name);
hprint(&c->hout, "ctime=%d %s\n", arena.ctime, fmttime(tbuf, arena.ctime));
hprint(&c->hout, "wtime=%d %s\n", arena.wtime, fmttime(tbuf, arena.wtime));
hprint(&c->hout, "clumpmagic=%#ux\n", arena.clumpmagic);
hprint(&c->hout, "score %V\n", arena.score);
hprint(&c->hout, "diskstats:\n");
hprint(&c->hout, "\tclumps=%,d cclumps=%,d used=%,lld uncsize=%,lld sealed=%d\n",
arena.diskstats.clumps, arena.diskstats.cclumps,
arena.diskstats.used, arena.diskstats.uncsize,
arena.diskstats.sealed);
hprint(&c->hout, "memstats:\n");
hprint(&c->hout, "\tclumps=%,d cclumps=%,d used=%,lld uncsize=%,lld sealed=%d\n",
arena.memstats.clumps, arena.memstats.cclumps,
arena.memstats.used, arena.memstats.uncsize,
arena.memstats.sealed);
if(arena.clumpmax == 0){
hprint(&c->hout, "bad clumpmax\n");
goto out;
}
score = hargstr(c, "score", "");
clump = hargstr(c, "clump", "");
if(clump[0]){
off = strtoull(clump, 0, 0);
diskarenaclump(c, &arena, off, score[0] ? score : nil);
}else if(score[0]){
diskarenaclump(c, &arena, -1, score);
}else{
diskarenatoc(c, &arena);
}
out:
free(table);
return 0;
}
