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cmd_kill_btree_node: Can now kill multiple nodes simultaneously

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Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
This commit is contained in:
Kent Overstreet 2024-10-11 18:23:24 -04:00
parent 571ca8b8ce
commit 1dba682527
1 changed files with 49 additions and 26 deletions
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69
c_src/cmd_kill_btree_node.c
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@ -27,30 +27,44 @@ static void kill_btree_node_usage(void)
"Report bugs to <linux-bcachefs@vger.kernel.org>"); "Report bugs to <linux-bcachefs@vger.kernel.org>");
} }
struct kill_node {
unsigned btree;
unsigned level;
u64 idx;
};
int cmd_kill_btree_node(int argc, char *argv[]) int cmd_kill_btree_node(int argc, char *argv[])
{ {
struct bch_opts opts = bch2_opts_empty(); struct bch_opts opts = bch2_opts_empty();
enum btree_id btree_id = 0; DARRAY(struct kill_node) kill_nodes = {};
unsigned level = 0;
u64 node_index = 0;
int opt; int opt;
opt_set(opts, read_only, true); opt_set(opts, read_only, true);
while ((opt = getopt(argc, argv, "b:l:i:h")) != -1) while ((opt = getopt(argc, argv, "n:h")) != -1)
switch (opt) { switch (opt) {
case 'b': case 'n': {
btree_id = read_string_list_or_die(optarg, char *p = optarg;
__bch2_btree_ids, "btree id"); const char *str_btree = strsep(&p, ":");
break; const char *str_level = strsep(&p, ":");
case 'l': const char *str_idx = strsep(&p, ":");
if (kstrtouint(optarg, 10, &level) || level >= BTREE_MAX_DEPTH)
struct kill_node n = {
.btree = read_string_list_or_die(str_btree,
__bch2_btree_ids, "btree id"),
};
if (str_level &&
(kstrtouint(str_level, 10, &n.level) || n.level >= BTREE_MAX_DEPTH))
die("invalid level"); die("invalid level");
if (str_idx &&
kstrtoull(str_idx, 10, &n.idx))
die("invalid index %s", str_idx);
darray_push(&kill_nodes, n);
break; break;
case 'i': }
if (kstrtoull(optarg, 10, &node_index))
die("invalid index %s", optarg);
break;
case 'h': case 'h':
kill_btree_node_usage(); kill_btree_node_usage();
exit(EXIT_SUCCESS); exit(EXIT_SUCCESS);
@ -71,16 +85,19 @@ int cmd_kill_btree_node(int argc, char *argv[])
if (ret) if (ret)
die("error %s from posix_memalign", bch2_err_str(ret)); die("error %s from posix_memalign", bch2_err_str(ret));
ret = bch2_trans_run(c, struct btree_trans *trans = bch2_trans_get(c);
__for_each_btree_node(trans, iter, btree_id, POS_MIN, 0, level, 0, b, ({
if (b->c.level != level) darray_for_each(kill_nodes, i) {
ret = __for_each_btree_node(trans, iter, i->btree, POS_MIN, 0, i->level, 0, b, ({
if (b->c.level != i->level)
continue; continue;
int ret2 = 0; int ret2 = 0;
if (!node_index) { if (!i->idx) {
struct printbuf buf = PRINTBUF; struct printbuf buf = PRINTBUF;
bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&b->key)); bch2_bkey_val_to_text(&buf, c, bkey_i_to_s_c(&b->key));
bch_info(c, "killing btree node %s", buf.buf); bch_info(c, "killing btree node %s l=%u %s",
bch2_btree_id_str(i->btree), i->level, buf.buf);
printbuf_exit(&buf); printbuf_exit(&buf);
ret2 = 1; ret2 = 1;
@ -102,16 +119,22 @@ int cmd_kill_btree_node(int argc, char *argv[])
} }
} }
node_index--; i->idx--;
ret2; ret2;
}))); }));
if (ret < 0)
if (ret < 0) {
bch_err(c, "error %i walking btree nodes", ret); bch_err(c, "error %i walking btree nodes", ret);
else if (!ret) { break;
} else if (!ret) {
bch_err(c, "node at specified index not found"); bch_err(c, "node at specified index not found");
ret = EXIT_FAILURE; ret = EXIT_FAILURE;
break;
}
} }
bch2_trans_put(trans);
bch2_fs_stop(c); bch2_fs_stop(c);
darray_exit(&kill_nodes);
return ret < 0 ? ret : 0; return ret < 0 ? ret : 0;
} }