From a232478f355c112c775c734182363f9e9b1688f8 Mon Sep 17 00:00:00 2001 From: Kent Overstreet Date: Sat, 18 Jun 2022 18:25:19 -0400 Subject: Break up cmd_debug.c into multiple files In the future, let's have one cmd_foo.c file per subcommand. Signed-off-by: Kent Overstreet --- cmd_list_journal.c | 246 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 246 insertions(+) create mode 100644 cmd_list_journal.c (limited to 'cmd_list_journal.c') diff --git a/cmd_list_journal.c b/cmd_list_journal.c new file mode 100644 index 00000000..869d3341 --- /dev/null +++ b/cmd_list_journal.c @@ -0,0 +1,246 @@ +#include +#include +#include +#include + +#include "cmds.h" +#include "libbcachefs.h" +#include "qcow2.h" +#include "tools-util.h" + +#include "libbcachefs/bcachefs.h" +#include "libbcachefs/btree_iter.h" +#include "libbcachefs/error.h" +#include "libbcachefs/journal_io.h" +#include "libbcachefs/journal_seq_blacklist.h" +#include "libbcachefs/super.h" + +static void list_journal_usage(void) +{ + puts("bcachefs list_journal - print contents of journal\n" + "Usage: bcachefs list_journal [OPTION]... \n" + "\n" + "Options:\n" + " -a Read entire journal, not just dirty entries\n" + " -n Number of journal entries to print, starting from the most recent\n" + " -v Verbose mode\n" + " -h Display this help and exit\n" + "Report bugs to "); +} + +static void star_start_of_lines(char *buf) +{ + char *p = buf; + + if (*p == ' ') + *p = '*'; + + while ((p = strstr(p, "\n "))) + p[1] = '*'; +} + +int cmd_list_journal(int argc, char *argv[]) +{ + struct bch_opts opts = bch2_opts_empty(); + u32 nr_entries = U32_MAX; + int opt; + + opt_set(opts, nochanges, true); + opt_set(opts, norecovery, true); + opt_set(opts, degraded, true); + opt_set(opts, errors, BCH_ON_ERROR_continue); + opt_set(opts, fix_errors, FSCK_OPT_YES); + opt_set(opts, keep_journal, true); + opt_set(opts, read_journal_only,true); + + while ((opt = getopt(argc, argv, "an:vh")) != -1) + switch (opt) { + case 'a': + opt_set(opts, read_entire_journal, true); + break; + case 'n': + nr_entries = kstrtouint(optarg, 10, &nr_entries); + opt_set(opts, read_entire_journal, true); + break; + case 'v': + opt_set(opts, verbose, true); + break; + case 'h': + list_journal_usage(); + exit(EXIT_SUCCESS); + } + args_shift(optind); + + if (!argc) + die("Please supply device(s) to open"); + + struct bch_fs *c = bch2_fs_open(argv, argc, opts); + if (IS_ERR(c)) + die("error opening %s: %s", argv[0], strerror(-PTR_ERR(c))); + + struct journal_replay *p, **_p; + struct genradix_iter iter; + struct jset_entry *entry; + struct printbuf buf = PRINTBUF; + + genradix_for_each(&c->journal_entries, iter, _p) { + p = *_p; + if (!p) + continue; + + if (le64_to_cpu(p->j.seq) + nr_entries < atomic64_read(&c->journal.seq)) + continue; + + bool blacklisted = + bch2_journal_seq_is_blacklisted(c, + le64_to_cpu(p->j.seq), false); + + if (blacklisted) + printf("blacklisted "); + + printf("journal entry %llu\n", le64_to_cpu(p->j.seq)); + + printbuf_reset(&buf); + + prt_printf(&buf, + " version %u\n" + " last seq %llu\n" + " flush %u\n" + " written at ", + le32_to_cpu(p->j.version), + le64_to_cpu(p->j.last_seq), + !JSET_NO_FLUSH(&p->j)); + bch2_journal_ptrs_to_text(&buf, c, p); + + if (blacklisted) + star_start_of_lines(buf.buf); + printf("%s\n", buf.buf); + + vstruct_for_each(&p->j, entry) { + printbuf_reset(&buf); + + /* + * log entries denote the start of a new transaction + * commit: + */ + if (entry->type == BCH_JSET_ENTRY_log && !entry->level) + prt_newline(&buf); + printbuf_indent_add(&buf, 4); + bch2_journal_entry_to_text(&buf, c, entry); + + if (blacklisted) + star_start_of_lines(buf.buf); + printf("%s\n", buf.buf); + } + } + + printbuf_exit(&buf); + bch2_fs_stop(c); + return 0; +} + +static void kill_btree_node_usage(void) +{ + puts("bcachefs kill_btree_node - make btree nodes unreadable\n" + "Usage: bcachefs kill_btree_node [OPTION]... \n" + "\n" + "Options:\n" + " -b (extents|inodes|dirents|xattrs) Btree to delete from\n" + " -l level Levle to delete from (0 == leaves)\n" + " -i index Index of btree node to kill\n" + " -h Display this help and exit\n" + "Report bugs to "); +} + +int cmd_kill_btree_node(int argc, char *argv[]) +{ + struct bch_opts opts = bch2_opts_empty(); + enum btree_id btree_id = 0; + unsigned level = 0; + u64 node_index = 0; + int opt; + + opt_set(opts, read_only, true); + + while ((opt = getopt(argc, argv, "b:l:i:h")) != -1) + switch (opt) { + case 'b': + btree_id = read_string_list_or_die(optarg, + bch2_btree_ids, "btree id"); + break; + case 'l': + if (kstrtouint(optarg, 10, &level) || level >= BTREE_MAX_DEPTH) + die("invalid level"); + break; + case 'i': + if (kstrtoull(optarg, 10, &node_index)) + die("invalid index %s", optarg); + break; + case 'h': + kill_btree_node_usage(); + exit(EXIT_SUCCESS); + } + args_shift(optind); + + if (!argc) + die("Please supply device(s)"); + + struct bch_fs *c = bch2_fs_open(argv, argc, opts); + if (IS_ERR(c)) + die("error opening %s: %s", argv[0], strerror(-PTR_ERR(c))); + + struct btree_trans trans; + struct btree_iter iter; + struct btree *b; + int ret; + void *zeroes; + + ret = posix_memalign(&zeroes, c->opts.block_size, c->opts.block_size); + if (ret) + die("error %s from posix_memalign", strerror(ret)); + + bch2_trans_init(&trans, c, 0, 0); + + __for_each_btree_node(&trans, iter, btree_id, POS_MIN, 0, level, 0, b, ret) { + if (b->c.level != level) + continue; + + if (!node_index) { + struct bkey_ptrs_c ptrs = bch2_bkey_ptrs_c(bkey_i_to_s_c(&b->key)); + const struct bch_extent_ptr *ptr; + + struct printbuf buf = PRINTBUF; + + bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&b->key)); + bch_info(c, "killing btree node %s", buf.buf); + printbuf_exit(&buf); + + bkey_for_each_ptr(ptrs, ptr) { + struct bch_dev *ca = bch_dev_bkey_exists(c, ptr->dev); + + ret = pwrite(ca->disk_sb.bdev->bd_fd, zeroes, + c->opts.block_size, ptr->offset << 9); + if (ret != c->opts.block_size) { + bch_err(c, "pwrite error: expected %u got %i %s", + c->opts.block_size, ret, strerror(errno)); + ret = EXIT_FAILURE; + goto done; + } + } + goto done; + } + + node_index--; + } + if (ret) + bch_err(c, "error %i walking btree nodes", ret); + else + bch_err(c, "node at specified index not found"); + ret = EXIT_FAILURE; +done: + bch2_trans_iter_exit(&trans, &iter); + bch2_trans_exit(&trans); + + bch2_fs_stop(c); + return ret; +} -- cgit v1.2.3