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-rw-r--r--libbcache/debug.c467
1 files changed, 0 insertions, 467 deletions
diff --git a/libbcache/debug.c b/libbcache/debug.c
deleted file mode 100644
index bddff979..00000000
--- a/libbcache/debug.c
+++ /dev/null
@@ -1,467 +0,0 @@
-/*
- * Assorted bcache debug code
- *
- * Copyright 2010, 2011 Kent Overstreet <kent.overstreet@gmail.com>
- * Copyright 2012 Google, Inc.
- */
-
-#include "bcache.h"
-#include "bkey_methods.h"
-#include "btree_cache.h"
-#include "btree_io.h"
-#include "btree_iter.h"
-#include "btree_update.h"
-#include "buckets.h"
-#include "debug.h"
-#include "error.h"
-#include "extents.h"
-#include "fs-gc.h"
-#include "inode.h"
-#include "io.h"
-#include "super.h"
-
-#include <linux/console.h>
-#include <linux/debugfs.h>
-#include <linux/module.h>
-#include <linux/random.h>
-#include <linux/seq_file.h>
-
-static struct dentry *bch_debug;
-
-#ifdef CONFIG_BCACHE_DEBUG
-
-static void btree_verify_endio(struct bio *bio)
-{
- struct closure *cl = bio->bi_private;
-
- closure_put(cl);
-}
-
-void __bch_btree_verify(struct bch_fs *c, struct btree *b)
-{
- struct btree *v = c->verify_data;
- struct btree_node *n_ondisk, *n_sorted, *n_inmemory;
- struct bset *sorted, *inmemory;
- struct extent_pick_ptr pick;
- struct bio *bio;
- struct closure cl;
-
- if (c->opts.nochanges)
- return;
-
- closure_init_stack(&cl);
-
- btree_node_io_lock(b);
- mutex_lock(&c->verify_lock);
-
- n_ondisk = c->verify_ondisk;
- n_sorted = c->verify_data->data;
- n_inmemory = b->data;
-
- bkey_copy(&v->key, &b->key);
- v->written = 0;
- v->level = b->level;
- v->btree_id = b->btree_id;
- bch_btree_keys_init(v, &c->expensive_debug_checks);
-
- pick = bch_btree_pick_ptr(c, b);
- if (IS_ERR_OR_NULL(pick.ca))
- return;
-
- bio = bio_alloc_bioset(GFP_NOIO, btree_pages(c), &c->btree_read_bio);
- bio->bi_bdev = pick.ca->disk_sb.bdev;
- bio->bi_iter.bi_sector = pick.ptr.offset;
- bio->bi_iter.bi_size = btree_bytes(c);
- bio_set_op_attrs(bio, REQ_OP_READ, REQ_META|READ_SYNC);
- bio->bi_private = &cl;
- bio->bi_end_io = btree_verify_endio;
- bch_bio_map(bio, n_sorted);
-
- closure_get(&cl);
- bch_generic_make_request(bio, c);
- closure_sync(&cl);
-
- bio_put(bio);
-
- memcpy(n_ondisk, n_sorted, btree_bytes(c));
-
- bch_btree_node_read_done(c, v, pick.ca, &pick.ptr);
- n_sorted = c->verify_data->data;
-
- percpu_ref_put(&pick.ca->io_ref);
-
- sorted = &n_sorted->keys;
- inmemory = &n_inmemory->keys;
-
- if (inmemory->u64s != sorted->u64s ||
- memcmp(inmemory->start,
- sorted->start,
- vstruct_end(inmemory) - (void *) inmemory->start)) {
- unsigned offset = 0, sectors;
- struct bset *i;
- unsigned j;
-
- console_lock();
-
- printk(KERN_ERR "*** in memory:\n");
- bch_dump_bset(b, inmemory, 0);
-
- printk(KERN_ERR "*** read back in:\n");
- bch_dump_bset(v, sorted, 0);
-
- while (offset < b->written) {
- if (!offset ) {
- i = &n_ondisk->keys;
- sectors = vstruct_blocks(n_ondisk, c->block_bits) <<
- c->block_bits;
- } else {
- struct btree_node_entry *bne =
- (void *) n_ondisk + (offset << 9);
- i = &bne->keys;
-
- sectors = vstruct_blocks(bne, c->block_bits) <<
- c->block_bits;
- }
-
- printk(KERN_ERR "*** on disk block %u:\n", offset);
- bch_dump_bset(b, i, offset);
-
- offset += sectors;
- }
-
- printk(KERN_ERR "*** block %u/%u not written\n",
- offset >> c->block_bits, btree_blocks(c));
-
- for (j = 0; j < le16_to_cpu(inmemory->u64s); j++)
- if (inmemory->_data[j] != sorted->_data[j])
- break;
-
- printk(KERN_ERR "b->written %u\n", b->written);
-
- console_unlock();
- panic("verify failed at %u\n", j);
- }
-
- mutex_unlock(&c->verify_lock);
- btree_node_io_unlock(b);
-}
-
-void bch_data_verify(struct cached_dev *dc, struct bio *bio)
-{
- char name[BDEVNAME_SIZE];
- struct bio *check;
- struct bio_vec bv;
- struct bvec_iter iter;
-
- check = bio_clone(bio, GFP_NOIO);
- if (!check)
- return;
- bio_set_op_attrs(check, REQ_OP_READ, READ_SYNC);
-
- if (bio_alloc_pages(check, GFP_NOIO))
- goto out_put;
-
- submit_bio_wait(check);
-
- bio_for_each_segment(bv, bio, iter) {
- void *p1 = kmap_atomic(bv.bv_page);
- void *p2 = page_address(check->bi_io_vec[iter.bi_idx].bv_page);
-
- if (memcmp(p1 + bv.bv_offset,
- p2 + bv.bv_offset,
- bv.bv_len))
- panic("verify failed at dev %s sector %llu\n",
- bdevname(dc->disk_sb.bdev, name),
- (uint64_t) bio->bi_iter.bi_sector);
-
- kunmap_atomic(p1);
- }
-
- bio_free_pages(check);
-out_put:
- bio_put(check);
-}
-
-#endif
-
-#ifdef CONFIG_DEBUG_FS
-
-/* XXX: bch_fs refcounting */
-
-struct dump_iter {
- struct bpos from;
- struct bch_fs *c;
- enum btree_id id;
-
- char buf[PAGE_SIZE];
- size_t bytes; /* what's currently in buf */
-
- char __user *ubuf; /* destination user buffer */
- size_t size; /* size of requested read */
- ssize_t ret; /* bytes read so far */
-};
-
-static int flush_buf(struct dump_iter *i)
-{
- if (i->bytes) {
- size_t bytes = min(i->bytes, i->size);
- int err = copy_to_user(i->ubuf, i->buf, bytes);
-
- if (err)
- return err;
-
- i->ret += bytes;
- i->ubuf += bytes;
- i->size -= bytes;
- i->bytes -= bytes;
- memmove(i->buf, i->buf + bytes, i->bytes);
- }
-
- return 0;
-}
-
-static int bch_dump_open(struct inode *inode, struct file *file)
-{
- struct btree_debug *bd = inode->i_private;
- struct dump_iter *i;
-
- i = kzalloc(sizeof(struct dump_iter), GFP_KERNEL);
- if (!i)
- return -ENOMEM;
-
- file->private_data = i;
- i->from = POS_MIN;
- i->c = container_of(bd, struct bch_fs, btree_debug[bd->id]);
- i->id = bd->id;
-
- return 0;
-}
-
-static int bch_dump_release(struct inode *inode, struct file *file)
-{
- kfree(file->private_data);
- return 0;
-}
-
-static ssize_t bch_read_btree(struct file *file, char __user *buf,
- size_t size, loff_t *ppos)
-{
- struct dump_iter *i = file->private_data;
- struct btree_iter iter;
- struct bkey_s_c k;
- int err;
-
- i->ubuf = buf;
- i->size = size;
- i->ret = 0;
-
- err = flush_buf(i);
- if (err)
- return err;
-
- if (!i->size)
- return i->ret;
-
- bch_btree_iter_init(&iter, i->c, i->id, i->from);
-
- while ((k = bch_btree_iter_peek(&iter)).k &&
- !(err = btree_iter_err(k))) {
- bch_bkey_val_to_text(i->c, bkey_type(0, i->id),
- i->buf, sizeof(i->buf), k);
- i->bytes = strlen(i->buf);
- BUG_ON(i->bytes >= PAGE_SIZE);
- i->buf[i->bytes] = '\n';
- i->bytes++;
-
- bch_btree_iter_advance_pos(&iter);
- i->from = iter.pos;
-
- err = flush_buf(i);
- if (err)
- break;
-
- if (!i->size)
- break;
- }
- bch_btree_iter_unlock(&iter);
-
- return err < 0 ? err : i->ret;
-}
-
-static const struct file_operations btree_debug_ops = {
- .owner = THIS_MODULE,
- .open = bch_dump_open,
- .release = bch_dump_release,
- .read = bch_read_btree,
-};
-
-static ssize_t bch_read_btree_formats(struct file *file, char __user *buf,
- size_t size, loff_t *ppos)
-{
- struct dump_iter *i = file->private_data;
- struct btree_iter iter;
- struct btree *b;
- int err;
-
- i->ubuf = buf;
- i->size = size;
- i->ret = 0;
-
- err = flush_buf(i);
- if (err)
- return err;
-
- if (!i->size || !bkey_cmp(POS_MAX, i->from))
- return i->ret;
-
- for_each_btree_node(&iter, i->c, i->id, i->from, 0, b) {
- i->bytes = bch_print_btree_node(i->c, b, i->buf,
- sizeof(i->buf));
- err = flush_buf(i);
- if (err)
- break;
-
- /*
- * can't easily correctly restart a btree node traversal across
- * all nodes, meh
- */
- i->from = bkey_cmp(POS_MAX, b->key.k.p)
- ? bkey_successor(b->key.k.p)
- : b->key.k.p;
-
- if (!i->size)
- break;
- }
- bch_btree_iter_unlock(&iter);
-
- return err < 0 ? err : i->ret;
-}
-
-static const struct file_operations btree_format_debug_ops = {
- .owner = THIS_MODULE,
- .open = bch_dump_open,
- .release = bch_dump_release,
- .read = bch_read_btree_formats,
-};
-
-static ssize_t bch_read_bfloat_failed(struct file *file, char __user *buf,
- size_t size, loff_t *ppos)
-{
- struct dump_iter *i = file->private_data;
- struct btree_iter iter;
- struct bkey_s_c k;
- struct btree *prev_node = NULL;
- int err;
-
- i->ubuf = buf;
- i->size = size;
- i->ret = 0;
-
- err = flush_buf(i);
- if (err)
- return err;
-
- if (!i->size)
- return i->ret;
-
- bch_btree_iter_init(&iter, i->c, i->id, i->from);
-
- while ((k = bch_btree_iter_peek(&iter)).k &&
- !(err = btree_iter_err(k))) {
- struct btree *b = iter.nodes[0];
- struct btree_node_iter *node_iter = &iter.node_iters[0];
- struct bkey_packed *_k = bch_btree_node_iter_peek(node_iter, b);
-
- if (iter.nodes[0] != prev_node) {
- i->bytes = bch_print_btree_node(i->c, b, i->buf,
- sizeof(i->buf));
- err = flush_buf(i);
- if (err)
- break;
- }
- prev_node = iter.nodes[0];
-
- i->bytes = bch_bkey_print_bfloat(b, _k, i->buf, sizeof(i->buf));
-
- err = flush_buf(i);
- if (err)
- break;
-
- bch_btree_iter_advance_pos(&iter);
- i->from = iter.pos;
-
- err = flush_buf(i);
- if (err)
- break;
-
- if (!i->size)
- break;
- }
- bch_btree_iter_unlock(&iter);
-
- return err < 0 ? err : i->ret;
-}
-
-static const struct file_operations bfloat_failed_debug_ops = {
- .owner = THIS_MODULE,
- .open = bch_dump_open,
- .release = bch_dump_release,
- .read = bch_read_bfloat_failed,
-};
-
-void bch_fs_debug_exit(struct bch_fs *c)
-{
- if (!IS_ERR_OR_NULL(c->debug))
- debugfs_remove_recursive(c->debug);
-}
-
-void bch_fs_debug_init(struct bch_fs *c)
-{
- struct btree_debug *bd;
- char name[100];
-
- if (IS_ERR_OR_NULL(bch_debug))
- return;
-
- snprintf(name, sizeof(name), "%pU", c->sb.user_uuid.b);
- c->debug = debugfs_create_dir(name, bch_debug);
- if (IS_ERR_OR_NULL(c->debug))
- return;
-
- for (bd = c->btree_debug;
- bd < c->btree_debug + ARRAY_SIZE(c->btree_debug);
- bd++) {
- bd->id = bd - c->btree_debug;
- bd->btree = debugfs_create_file(bch_btree_ids[bd->id],
- 0400, c->debug, bd,
- &btree_debug_ops);
-
- snprintf(name, sizeof(name), "%s-formats",
- bch_btree_ids[bd->id]);
-
- bd->btree_format = debugfs_create_file(name, 0400, c->debug, bd,
- &btree_format_debug_ops);
-
- snprintf(name, sizeof(name), "%s-bfloat-failed",
- bch_btree_ids[bd->id]);
-
- bd->failed = debugfs_create_file(name, 0400, c->debug, bd,
- &bfloat_failed_debug_ops);
- }
-}
-
-#endif
-
-void bch_debug_exit(void)
-{
- if (!IS_ERR_OR_NULL(bch_debug))
- debugfs_remove_recursive(bch_debug);
-}
-
-int __init bch_debug_init(void)
-{
- int ret = 0;
-
- bch_debug = debugfs_create_dir("bcache", NULL);
- return ret;
-}
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