[thirdparty/linux.git] / fs / bcachefs / sb-members.c

// SPDX-License-Identifier: GPL-2.0

#include "bcachefs.h"
#include "disk_groups.h"
#include "opts.h"
#include "replicas.h"
#include "sb-members.h"
#include "super-io.h"

#define x(t, n, ...) [n] = #t,
static const char * const bch2_iops_measurements[] = {
	BCH_IOPS_MEASUREMENTS()
	NULL
};

char * const bch2_member_error_strs[] = {
	BCH_MEMBER_ERROR_TYPES()
	NULL
};
#undef x

/* Code for bch_sb_field_members_v1: */

struct bch_member *bch2_members_v2_get_mut(struct bch_sb *sb, int i)
{
	return __bch2_members_v2_get_mut(bch2_sb_field_get(sb, members_v2), i);
}

static struct bch_member members_v2_get(struct bch_sb_field_members_v2 *mi, int i)
{
	struct bch_member ret, *p = __bch2_members_v2_get_mut(mi, i);
	memset(&ret, 0, sizeof(ret));
	memcpy(&ret, p, min_t(size_t, le16_to_cpu(mi->member_bytes), sizeof(ret)));
	return ret;
}

static struct bch_member *members_v1_get_mut(struct bch_sb_field_members_v1 *mi, int i)
{
	return (void *) mi->_members + (i * BCH_MEMBER_V1_BYTES);
}

static struct bch_member members_v1_get(struct bch_sb_field_members_v1 *mi, int i)
{
	struct bch_member ret, *p = members_v1_get_mut(mi, i);
	memset(&ret, 0, sizeof(ret));
	memcpy(&ret, p, min_t(size_t, BCH_MEMBER_V1_BYTES, sizeof(ret)));
	return ret;
}

struct bch_member bch2_sb_member_get(struct bch_sb *sb, int i)
{
	struct bch_sb_field_members_v2 *mi2 = bch2_sb_field_get(sb, members_v2);
	if (mi2)
		return members_v2_get(mi2, i);
	struct bch_sb_field_members_v1 *mi1 = bch2_sb_field_get(sb, members_v1);
	return members_v1_get(mi1, i);
}

static int sb_members_v2_resize_entries(struct bch_fs *c)
{
	struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);

	if (le16_to_cpu(mi->member_bytes) < sizeof(struct bch_member)) {
		unsigned u64s = DIV_ROUND_UP((sizeof(*mi) + sizeof(mi->_members[0]) *
					      c->disk_sb.sb->nr_devices), 8);

		mi = bch2_sb_field_resize(&c->disk_sb, members_v2, u64s);
		if (!mi)
			return -BCH_ERR_ENOSPC_sb_members_v2;

		for (int i = c->disk_sb.sb->nr_devices - 1; i >= 0; --i) {
			void *dst = (void *) mi->_members + (i * sizeof(struct bch_member));
			memmove(dst, __bch2_members_v2_get_mut(mi, i), le16_to_cpu(mi->member_bytes));
			memset(dst + le16_to_cpu(mi->member_bytes),
			       0, (sizeof(struct bch_member) - le16_to_cpu(mi->member_bytes)));
		}
		mi->member_bytes = cpu_to_le16(sizeof(struct bch_member));
	}
	return 0;
}

int bch2_sb_members_v2_init(struct bch_fs *c)
{
	struct bch_sb_field_members_v1 *mi1;
	struct bch_sb_field_members_v2 *mi2;

	if (!bch2_sb_field_get(c->disk_sb.sb, members_v2)) {
		mi2 = bch2_sb_field_resize(&c->disk_sb, members_v2,
				DIV_ROUND_UP(sizeof(*mi2) +
					     sizeof(struct bch_member) * c->sb.nr_devices,
					     sizeof(u64)));
		mi1 = bch2_sb_field_get(c->disk_sb.sb, members_v1);
		memcpy(&mi2->_members[0], &mi1->_members[0],
		       BCH_MEMBER_V1_BYTES * c->sb.nr_devices);
		memset(&mi2->pad[0], 0, sizeof(mi2->pad));
		mi2->member_bytes = cpu_to_le16(BCH_MEMBER_V1_BYTES);
	}

	return sb_members_v2_resize_entries(c);
}

int bch2_sb_members_cpy_v2_v1(struct bch_sb_handle *disk_sb)
{
	struct bch_sb_field_members_v1 *mi1;
	struct bch_sb_field_members_v2 *mi2;

	mi1 = bch2_sb_field_resize(disk_sb, members_v1,
			DIV_ROUND_UP(sizeof(*mi1) + BCH_MEMBER_V1_BYTES *
				     disk_sb->sb->nr_devices, sizeof(u64)));
	if (!mi1)
		return -BCH_ERR_ENOSPC_sb_members;

	mi2 = bch2_sb_field_get(disk_sb->sb, members_v2);

	for (unsigned i = 0; i < disk_sb->sb->nr_devices; i++)
		memcpy(members_v1_get_mut(mi1, i), __bch2_members_v2_get_mut(mi2, i), BCH_MEMBER_V1_BYTES);

	return 0;
}

static int validate_member(struct printbuf *err,
			   struct bch_member m,
			   struct bch_sb *sb,
			   int i)
{
	if (le64_to_cpu(m.nbuckets) > LONG_MAX) {
		prt_printf(err, "device %u: too many buckets (got %llu, max %lu)",
			   i, le64_to_cpu(m.nbuckets), LONG_MAX);
		return -BCH_ERR_invalid_sb_members;
	}

	if (le64_to_cpu(m.nbuckets) -
	    le16_to_cpu(m.first_bucket) < BCH_MIN_NR_NBUCKETS) {
		prt_printf(err, "device %u: not enough buckets (got %llu, max %u)",
			   i, le64_to_cpu(m.nbuckets), BCH_MIN_NR_NBUCKETS);
		return -BCH_ERR_invalid_sb_members;
	}

	if (le16_to_cpu(m.bucket_size) <
	    le16_to_cpu(sb->block_size)) {
		prt_printf(err, "device %u: bucket size %u smaller than block size %u",
			   i, le16_to_cpu(m.bucket_size), le16_to_cpu(sb->block_size));
		return -BCH_ERR_invalid_sb_members;
	}

	if (le16_to_cpu(m.bucket_size) <
	    BCH_SB_BTREE_NODE_SIZE(sb)) {
		prt_printf(err, "device %u: bucket size %u smaller than btree node size %llu",
			   i, le16_to_cpu(m.bucket_size), BCH_SB_BTREE_NODE_SIZE(sb));
		return -BCH_ERR_invalid_sb_members;
	}

	return 0;
}

static void member_to_text(struct printbuf *out,
			   struct bch_member m,
			   struct bch_sb_field_disk_groups *gi,
			   struct bch_sb *sb,
			   int i)
{
	unsigned data_have = bch2_sb_dev_has_data(sb, i);
	u64 bucket_size = le16_to_cpu(m.bucket_size);
	u64 device_size = le64_to_cpu(m.nbuckets) * bucket_size;

	if (!bch2_member_exists(&m))
		return;

	prt_printf(out, "Device:");
	prt_tab(out);
	prt_printf(out, "%u", i);
	prt_newline(out);

	printbuf_indent_add(out, 2);

	prt_printf(out, "Label:");
	prt_tab(out);
	if (BCH_MEMBER_GROUP(&m)) {
		unsigned idx = BCH_MEMBER_GROUP(&m) - 1;

		if (idx < disk_groups_nr(gi))
			prt_printf(out, "%s (%u)",
				   gi->entries[idx].label, idx);
		else
			prt_printf(out, "(bad disk labels section)");
	} else {
		prt_printf(out, "(none)");
	}
	prt_newline(out);

	prt_printf(out, "UUID:");
	prt_tab(out);
	pr_uuid(out, m.uuid.b);
	prt_newline(out);

	prt_printf(out, "Size:");
	prt_tab(out);
	prt_units_u64(out, device_size << 9);
	prt_newline(out);

	for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
		prt_printf(out, "%s errors:", bch2_member_error_strs[i]);
		prt_tab(out);
		prt_u64(out, le64_to_cpu(m.errors[i]));
		prt_newline(out);
	}

	for (unsigned i = 0; i < BCH_IOPS_NR; i++) {
		prt_printf(out, "%s iops:", bch2_iops_measurements[i]);
		prt_tab(out);
		prt_printf(out, "%u", le32_to_cpu(m.iops[i]));
		prt_newline(out);
	}

	prt_printf(out, "Bucket size:");
	prt_tab(out);
	prt_units_u64(out, bucket_size << 9);
	prt_newline(out);

	prt_printf(out, "First bucket:");
	prt_tab(out);
	prt_printf(out, "%u", le16_to_cpu(m.first_bucket));
	prt_newline(out);

	prt_printf(out, "Buckets:");
	prt_tab(out);
	prt_printf(out, "%llu", le64_to_cpu(m.nbuckets));
	prt_newline(out);

	prt_printf(out, "Last mount:");
	prt_tab(out);
	if (m.last_mount)
		bch2_prt_datetime(out, le64_to_cpu(m.last_mount));
	else
		prt_printf(out, "(never)");
	prt_newline(out);

	prt_printf(out, "Last superblock write:");
	prt_tab(out);
	prt_u64(out, le64_to_cpu(m.seq));
	prt_newline(out);

	prt_printf(out, "State:");
	prt_tab(out);
	prt_printf(out, "%s",
		   BCH_MEMBER_STATE(&m) < BCH_MEMBER_STATE_NR
		   ? bch2_member_states[BCH_MEMBER_STATE(&m)]
		   : "unknown");
	prt_newline(out);

	prt_printf(out, "Data allowed:");
	prt_tab(out);
	if (BCH_MEMBER_DATA_ALLOWED(&m))
		prt_bitflags(out, __bch2_data_types, BCH_MEMBER_DATA_ALLOWED(&m));
	else
		prt_printf(out, "(none)");
	prt_newline(out);

	prt_printf(out, "Has data:");
	prt_tab(out);
	if (data_have)
		prt_bitflags(out, __bch2_data_types, data_have);
	else
		prt_printf(out, "(none)");
	prt_newline(out);

	prt_str(out, "Durability:");
	prt_tab(out);
	prt_printf(out, "%llu", BCH_MEMBER_DURABILITY(&m) ? BCH_MEMBER_DURABILITY(&m) - 1 : 1);
	prt_newline(out);

	prt_printf(out, "Discard:");
	prt_tab(out);
	prt_printf(out, "%llu", BCH_MEMBER_DISCARD(&m));
	prt_newline(out);

	prt_printf(out, "Freespace initialized:");
	prt_tab(out);
	prt_printf(out, "%llu", BCH_MEMBER_FREESPACE_INITIALIZED(&m));
	prt_newline(out);

	printbuf_indent_sub(out, 2);
}

static int bch2_sb_members_v1_validate(struct bch_sb *sb,
				    struct bch_sb_field *f,
				    struct printbuf *err)
{
	struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1);
	unsigned i;

	if ((void *) members_v1_get_mut(mi, sb->nr_devices) > vstruct_end(&mi->field)) {
		prt_printf(err, "too many devices for section size");
		return -BCH_ERR_invalid_sb_members;
	}

	for (i = 0; i < sb->nr_devices; i++) {
		struct bch_member m = members_v1_get(mi, i);

		int ret = validate_member(err, m, sb, i);
		if (ret)
			return ret;
	}

	return 0;
}

static void bch2_sb_members_v1_to_text(struct printbuf *out, struct bch_sb *sb,
				       struct bch_sb_field *f)
{
	struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1);
	struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups);
	unsigned i;

	for (i = 0; i < sb->nr_devices; i++)
		member_to_text(out, members_v1_get(mi, i), gi, sb, i);
}

const struct bch_sb_field_ops bch_sb_field_ops_members_v1 = {
	.validate	= bch2_sb_members_v1_validate,
	.to_text	= bch2_sb_members_v1_to_text,
};

static void bch2_sb_members_v2_to_text(struct printbuf *out, struct bch_sb *sb,
				       struct bch_sb_field *f)
{
	struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2);
	struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups);
	unsigned i;

	for (i = 0; i < sb->nr_devices; i++)
		member_to_text(out, members_v2_get(mi, i), gi, sb, i);
}

static int bch2_sb_members_v2_validate(struct bch_sb *sb,
				       struct bch_sb_field *f,
				       struct printbuf *err)
{
	struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2);
	size_t mi_bytes = (void *) __bch2_members_v2_get_mut(mi, sb->nr_devices) -
		(void *) mi;

	if (mi_bytes > vstruct_bytes(&mi->field)) {
		prt_printf(err, "section too small (%zu > %zu)",
			   mi_bytes, vstruct_bytes(&mi->field));
		return -BCH_ERR_invalid_sb_members;
	}

	for (unsigned i = 0; i < sb->nr_devices; i++) {
		int ret = validate_member(err, members_v2_get(mi, i), sb, i);
		if (ret)
			return ret;
	}

	return 0;
}

const struct bch_sb_field_ops bch_sb_field_ops_members_v2 = {
	.validate	= bch2_sb_members_v2_validate,
	.to_text	= bch2_sb_members_v2_to_text,
};

void bch2_sb_members_from_cpu(struct bch_fs *c)
{
	struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);

	rcu_read_lock();
	for_each_member_device_rcu(c, ca, NULL) {
		struct bch_member *m = __bch2_members_v2_get_mut(mi, ca->dev_idx);

		for (unsigned e = 0; e < BCH_MEMBER_ERROR_NR; e++)
			m->errors[e] = cpu_to_le64(atomic64_read(&ca->errors[e]));
	}
	rcu_read_unlock();
}

void bch2_dev_io_errors_to_text(struct printbuf *out, struct bch_dev *ca)
{
	struct bch_fs *c = ca->fs;
	struct bch_member m;

	mutex_lock(&ca->fs->sb_lock);
	m = bch2_sb_member_get(c->disk_sb.sb, ca->dev_idx);
	mutex_unlock(&ca->fs->sb_lock);

	printbuf_tabstop_push(out, 12);

	prt_str(out, "IO errors since filesystem creation");
	prt_newline(out);

	printbuf_indent_add(out, 2);
	for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
		prt_printf(out, "%s:", bch2_member_error_strs[i]);
		prt_tab(out);
		prt_u64(out, atomic64_read(&ca->errors[i]));
		prt_newline(out);
	}
	printbuf_indent_sub(out, 2);

	prt_str(out, "IO errors since ");
	bch2_pr_time_units(out, (ktime_get_real_seconds() - le64_to_cpu(m.errors_reset_time)) * NSEC_PER_SEC);
	prt_str(out, " ago");
	prt_newline(out);

	printbuf_indent_add(out, 2);
	for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
		prt_printf(out, "%s:", bch2_member_error_strs[i]);
		prt_tab(out);
		prt_u64(out, atomic64_read(&ca->errors[i]) - le64_to_cpu(m.errors_at_reset[i]));
		prt_newline(out);
	}
	printbuf_indent_sub(out, 2);
}

void bch2_dev_errors_reset(struct bch_dev *ca)
{
	struct bch_fs *c = ca->fs;
	struct bch_member *m;

	mutex_lock(&c->sb_lock);
	m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx);
	for (unsigned i = 0; i < ARRAY_SIZE(m->errors_at_reset); i++)
		m->errors_at_reset[i] = cpu_to_le64(atomic64_read(&ca->errors[i]));
	m->errors_reset_time = ktime_get_real_seconds();

	bch2_write_super(c);
	mutex_unlock(&c->sb_lock);
}
Commit	Line	Data
fb8e5b4c KO	1	// SPDX-License-Identifier: GPL-2.0
	2
	3	#include "bcachefs.h"
	4	#include "disk_groups.h"
40f7914e	5	#include "opts.h"
fb8e5b4c KO	6	#include "replicas.h"
	7	#include "sb-members.h"
	8	#include "super-io.h"
	9
94119eeb KO	10	#define x(t, n, ...) [n] = #t,
	11	static const char * const bch2_iops_measurements[] = {
	12	BCH_IOPS_MEASUREMENTS()
	13	NULL
	14	};
	15
	16	char * const bch2_member_error_strs[] = {
	17	BCH_MEMBER_ERROR_TYPES()
	18	NULL
	19	};
	20	#undef x
	21
9af26120	22	/* Code for bch_sb_field_members_v1: */
3f7b9713	23
3f7b9713 HS	24	struct bch_member bch2_members_v2_get_mut(struct bch_sb sb, int i)
3f7b9713 HS	25	{
0f0fc312	26	return __bch2_members_v2_get_mut(bch2_sb_field_get(sb, members_v2), i);
3f7b9713 HS	27	}
	28
	29	static struct bch_member members_v2_get(struct bch_sb_field_members_v2 *mi, int i)
	30	{
0f0fc312	31	struct bch_member ret, *p = __bch2_members_v2_get_mut(mi, i);
3f7b9713 HS	32	memset(&ret, 0, sizeof(ret));
	33	memcpy(&ret, p, min_t(size_t, le16_to_cpu(mi->member_bytes), sizeof(ret)));
	34	return ret;
	35	}
	36
9af26120	37	static struct bch_member members_v1_get_mut(struct bch_sb_field_members_v1 mi, int i)
1241df58	38	{
3f7b9713	39	return (void ) mi->_members + (i BCH_MEMBER_V1_BYTES);
1241df58 HS	40	}
1241df58 HS	41
9af26120	42	static struct bch_member members_v1_get(struct bch_sb_field_members_v1 *mi, int i)
1241df58 HS	43	{
	44	struct bch_member ret, *p = members_v1_get_mut(mi, i);
	45	memset(&ret, 0, sizeof(ret));
5c1ab40e KO	46	memcpy(&ret, p, min_t(size_t, BCH_MEMBER_V1_BYTES, sizeof(ret)));
5c1ab40e KO	47	return ret;
1241df58 HS	48	}
	49
	50	struct bch_member bch2_sb_member_get(struct bch_sb *sb, int i)
	51	{
4637429e	52	struct bch_sb_field_members_v2 *mi2 = bch2_sb_field_get(sb, members_v2);
3f7b9713 HS	53	if (mi2)
3f7b9713 HS	54	return members_v2_get(mi2, i);
4637429e	55	struct bch_sb_field_members_v1 *mi1 = bch2_sb_field_get(sb, members_v1);
1241df58 HS	56	return members_v1_get(mi1, i);
1241df58 HS	57	}
fb8e5b4c	58
3f7b9713 HS	59	static int sb_members_v2_resize_entries(struct bch_fs *c)
3f7b9713 HS	60	{
4637429e	61	struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);
3f7b9713 HS	62
	63	if (le16_to_cpu(mi->member_bytes) < sizeof(struct bch_member)) {
	64	unsigned u64s = DIV_ROUND_UP((sizeof(mi) + sizeof(mi->_members[0])
	65	c->disk_sb.sb->nr_devices), 8);
	66
4637429e	67	mi = bch2_sb_field_resize(&c->disk_sb, members_v2, u64s);
3f7b9713 HS	68	if (!mi)
	69	return -BCH_ERR_ENOSPC_sb_members_v2;
	70
	71	for (int i = c->disk_sb.sb->nr_devices - 1; i >= 0; --i) {
	72	void dst = (void ) mi->_members + (i * sizeof(struct bch_member));
0f0fc312	73	memmove(dst, __bch2_members_v2_get_mut(mi, i), le16_to_cpu(mi->member_bytes));
3f7b9713 HS	74	memset(dst + le16_to_cpu(mi->member_bytes),
	75	0, (sizeof(struct bch_member) - le16_to_cpu(mi->member_bytes)));
	76	}
	77	mi->member_bytes = cpu_to_le16(sizeof(struct bch_member));
	78	}
	79	return 0;
	80	}
	81
f5d26fa3	82	int bch2_sb_members_v2_init(struct bch_fs *c)
3f7b9713	83	{
9af26120	84	struct bch_sb_field_members_v1 *mi1;
3f7b9713 HS	85	struct bch_sb_field_members_v2 *mi2;
3f7b9713 HS	86
4637429e KO	87	if (!bch2_sb_field_get(c->disk_sb.sb, members_v2)) {
4637429e KO	88	mi2 = bch2_sb_field_resize(&c->disk_sb, members_v2,
3f7b9713 HS	89	DIV_ROUND_UP(sizeof(*mi2) +
	90	sizeof(struct bch_member) * c->sb.nr_devices,
	91	sizeof(u64)));
4637429e	92	mi1 = bch2_sb_field_get(c->disk_sb.sb, members_v1);
3f7b9713 HS	93	memcpy(&mi2->_members[0], &mi1->_members[0],
	94	BCH_MEMBER_V1_BYTES * c->sb.nr_devices);
	95	memset(&mi2->pad[0], 0, sizeof(mi2->pad));
	96	mi2->member_bytes = cpu_to_le16(BCH_MEMBER_V1_BYTES);
	97	}
	98
	99	return sb_members_v2_resize_entries(c);
	100	}
	101
94119eeb	102	int bch2_sb_members_cpy_v2_v1(struct bch_sb_handle *disk_sb)
3f7b9713	103	{
9af26120	104	struct bch_sb_field_members_v1 *mi1;
3f7b9713 HS	105	struct bch_sb_field_members_v2 *mi2;
3f7b9713 HS	106
4637429e	107	mi1 = bch2_sb_field_resize(disk_sb, members_v1,
3f7b9713 HS	108	DIV_ROUND_UP(sizeof(mi1) + BCH_MEMBER_V1_BYTES
	109	disk_sb->sb->nr_devices, sizeof(u64)));
	110	if (!mi1)
	111	return -BCH_ERR_ENOSPC_sb_members;
	112
4637429e	113	mi2 = bch2_sb_field_get(disk_sb->sb, members_v2);
3f7b9713 HS	114
3f7b9713 HS	115	for (unsigned i = 0; i < disk_sb->sb->nr_devices; i++)
0f0fc312	116	memcpy(members_v1_get_mut(mi1, i), __bch2_members_v2_get_mut(mi2, i), BCH_MEMBER_V1_BYTES);
3f7b9713 HS	117
	118	return 0;
	119	}
	120
	121	static int validate_member(struct printbuf *err,
	122	struct bch_member m,
	123	struct bch_sb *sb,
	124	int i)
	125	{
	126	if (le64_to_cpu(m.nbuckets) > LONG_MAX) {
	127	prt_printf(err, "device %u: too many buckets (got %llu, max %lu)",
	128	i, le64_to_cpu(m.nbuckets), LONG_MAX);
	129	return -BCH_ERR_invalid_sb_members;
	130	}
	131
	132	if (le64_to_cpu(m.nbuckets) -
	133	le16_to_cpu(m.first_bucket) < BCH_MIN_NR_NBUCKETS) {
	134	prt_printf(err, "device %u: not enough buckets (got %llu, max %u)",
	135	i, le64_to_cpu(m.nbuckets), BCH_MIN_NR_NBUCKETS);
	136	return -BCH_ERR_invalid_sb_members;
	137	}
	138
	139	if (le16_to_cpu(m.bucket_size) <
	140	le16_to_cpu(sb->block_size)) {
	141	prt_printf(err, "device %u: bucket size %u smaller than block size %u",
	142	i, le16_to_cpu(m.bucket_size), le16_to_cpu(sb->block_size));
	143	return -BCH_ERR_invalid_sb_members;
	144	}
	145
	146	if (le16_to_cpu(m.bucket_size) <
	147	BCH_SB_BTREE_NODE_SIZE(sb)) {
	148	prt_printf(err, "device %u: bucket size %u smaller than btree node size %llu",
	149	i, le16_to_cpu(m.bucket_size), BCH_SB_BTREE_NODE_SIZE(sb));
	150	return -BCH_ERR_invalid_sb_members;
	151	}
	152
	153	return 0;
	154	}
	155
	156	static void member_to_text(struct printbuf *out,
	157	struct bch_member m,
	158	struct bch_sb_field_disk_groups *gi,
	159	struct bch_sb *sb,
	160	int i)
	161	{
	162	unsigned data_have = bch2_sb_dev_has_data(sb, i);
	163	u64 bucket_size = le16_to_cpu(m.bucket_size);
	164	u64 device_size = le64_to_cpu(m.nbuckets) * bucket_size;
	165
dc7a15fb KO	166	if (!bch2_member_exists(&m))
	167	return;
	168
3f7b9713 HS	169	prt_printf(out, "Device:");
	170	prt_tab(out);
	171	prt_printf(out, "%u", i);
	172	prt_newline(out);
	173
	174	printbuf_indent_add(out, 2);
	175
94119eeb KO	176	prt_printf(out, "Label:");
	177	prt_tab(out);
	178	if (BCH_MEMBER_GROUP(&m)) {
	179	unsigned idx = BCH_MEMBER_GROUP(&m) - 1;
	180
	181	if (idx < disk_groups_nr(gi))
	182	prt_printf(out, "%s (%u)",
	183	gi->entries[idx].label, idx);
	184	else
	185	prt_printf(out, "(bad disk labels section)");
	186	} else {
	187	prt_printf(out, "(none)");
	188	}
	189	prt_newline(out);
	190
3f7b9713 HS	191	prt_printf(out, "UUID:");
	192	prt_tab(out);
	193	pr_uuid(out, m.uuid.b);
	194	prt_newline(out);
	195
	196	prt_printf(out, "Size:");
	197	prt_tab(out);
	198	prt_units_u64(out, device_size << 9);
	199	prt_newline(out);
	200
94119eeb KO	201	for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
	202	prt_printf(out, "%s errors:", bch2_member_error_strs[i]);
	203	prt_tab(out);
	204	prt_u64(out, le64_to_cpu(m.errors[i]));
	205	prt_newline(out);
	206	}
	207
40f7914e HS	208	for (unsigned i = 0; i < BCH_IOPS_NR; i++) {
	209	prt_printf(out, "%s iops:", bch2_iops_measurements[i]);
	210	prt_tab(out);
	211	prt_printf(out, "%u", le32_to_cpu(m.iops[i]));
	212	prt_newline(out);
	213	}
	214
3f7b9713 HS	215	prt_printf(out, "Bucket size:");
	216	prt_tab(out);
	217	prt_units_u64(out, bucket_size << 9);
	218	prt_newline(out);
	219
	220	prt_printf(out, "First bucket:");
	221	prt_tab(out);
	222	prt_printf(out, "%u", le16_to_cpu(m.first_bucket));
	223	prt_newline(out);
	224
	225	prt_printf(out, "Buckets:");
	226	prt_tab(out);
	227	prt_printf(out, "%llu", le64_to_cpu(m.nbuckets));
	228	prt_newline(out);
	229
	230	prt_printf(out, "Last mount:");
	231	prt_tab(out);
	232	if (m.last_mount)
59154f2c	233	bch2_prt_datetime(out, le64_to_cpu(m.last_mount));
3f7b9713 HS	234	else
	235	prt_printf(out, "(never)");
	236	prt_newline(out);
6b00de06 KO	237
	238	prt_printf(out, "Last superblock write:");
	239	prt_tab(out);
	240	prt_u64(out, le64_to_cpu(m.seq));
	241	prt_newline(out);
3f7b9713 HS	242
	243	prt_printf(out, "State:");
	244	prt_tab(out);
	245	prt_printf(out, "%s",
	246	BCH_MEMBER_STATE(&m) < BCH_MEMBER_STATE_NR
	247	? bch2_member_states[BCH_MEMBER_STATE(&m)]
	248	: "unknown");
	249	prt_newline(out);
	250
3f7b9713 HS	251	prt_printf(out, "Data allowed:");
	252	prt_tab(out);
	253	if (BCH_MEMBER_DATA_ALLOWED(&m))
e58f963c	254	prt_bitflags(out, __bch2_data_types, BCH_MEMBER_DATA_ALLOWED(&m));
3f7b9713 HS	255	else
	256	prt_printf(out, "(none)");
	257	prt_newline(out);
	258
	259	prt_printf(out, "Has data:");
	260	prt_tab(out);
	261	if (data_have)
e58f963c	262	prt_bitflags(out, __bch2_data_types, data_have);
3f7b9713 HS	263	else
	264	prt_printf(out, "(none)");
	265	prt_newline(out);
	266
d05db127 KO	267	prt_str(out, "Durability:");
d05db127 KO	268	prt_tab(out);
f60250de	269	prt_printf(out, "%llu", BCH_MEMBER_DURABILITY(&m) ? BCH_MEMBER_DURABILITY(&m) - 1 : 1);
d05db127 KO	270	prt_newline(out);
d05db127 KO	271
3f7b9713 HS	272	prt_printf(out, "Discard:");
	273	prt_tab(out);
	274	prt_printf(out, "%llu", BCH_MEMBER_DISCARD(&m));
	275	prt_newline(out);
	276
	277	prt_printf(out, "Freespace initialized:");
	278	prt_tab(out);
	279	prt_printf(out, "%llu", BCH_MEMBER_FREESPACE_INITIALIZED(&m));
	280	prt_newline(out);
	281
	282	printbuf_indent_sub(out, 2);
	283	}
	284
	285	static int bch2_sb_members_v1_validate(struct bch_sb *sb,
fb8e5b4c KO	286	struct bch_sb_field *f,
	287	struct printbuf *err)
	288	{
9af26120	289	struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1);
fb8e5b4c KO	290	unsigned i;
fb8e5b4c KO	291
5c1ab40e	292	if ((void *) members_v1_get_mut(mi, sb->nr_devices) > vstruct_end(&mi->field)) {
fb8e5b4c KO	293	prt_printf(err, "too many devices for section size");
	294	return -BCH_ERR_invalid_sb_members;
	295	}
	296
	297	for (i = 0; i < sb->nr_devices; i++) {
3f7b9713	298	struct bch_member m = members_v1_get(mi, i);
fb8e5b4c	299
3f7b9713 HS	300	int ret = validate_member(err, m, sb, i);
	301	if (ret)
	302	return ret;
fb8e5b4c KO	303	}
	304
	305	return 0;
	306	}
	307
3f7b9713 HS	308	static void bch2_sb_members_v1_to_text(struct printbuf out, struct bch_sb sb,
3f7b9713 HS	309	struct bch_sb_field *f)
fb8e5b4c	310	{
9af26120	311	struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1);
4637429e	312	struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups);
fb8e5b4c KO	313	unsigned i;
fb8e5b4c KO	314
dc7a15fb KO	315	for (i = 0; i < sb->nr_devices; i++)
dc7a15fb KO	316	member_to_text(out, members_v1_get(mi, i), gi, sb, i);
3f7b9713	317	}
fb8e5b4c	318
9af26120	319	const struct bch_sb_field_ops bch_sb_field_ops_members_v1 = {
3f7b9713 HS	320	.validate = bch2_sb_members_v1_validate,
	321	.to_text = bch2_sb_members_v1_to_text,
	322	};
fb8e5b4c	323
3f7b9713 HS	324	static void bch2_sb_members_v2_to_text(struct printbuf out, struct bch_sb sb,
	325	struct bch_sb_field *f)
	326	{
	327	struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2);
4637429e	328	struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups);
3f7b9713	329	unsigned i;
fb8e5b4c	330
dc7a15fb KO	331	for (i = 0; i < sb->nr_devices; i++)
dc7a15fb KO	332	member_to_text(out, members_v2_get(mi, i), gi, sb, i);
3f7b9713 HS	333	}
	334
	335	static int bch2_sb_members_v2_validate(struct bch_sb *sb,
	336	struct bch_sb_field *f,
	337	struct printbuf *err)
	338	{
	339	struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2);
0f0fc312	340	size_t mi_bytes = (void *) __bch2_members_v2_get_mut(mi, sb->nr_devices) -
3f7b9713	341	(void *) mi;
fb8e5b4c	342
3f7b9713 HS	343	if (mi_bytes > vstruct_bytes(&mi->field)) {
	344	prt_printf(err, "section too small (%zu > %zu)",
	345	mi_bytes, vstruct_bytes(&mi->field));
	346	return -BCH_ERR_invalid_sb_members;
	347	}
fb8e5b4c	348
3f7b9713 HS	349	for (unsigned i = 0; i < sb->nr_devices; i++) {
	350	int ret = validate_member(err, members_v2_get(mi, i), sb, i);
	351	if (ret)
	352	return ret;
fb8e5b4c	353	}
3f7b9713 HS	354
3f7b9713 HS	355	return 0;
fb8e5b4c KO	356	}
fb8e5b4c KO	357
3f7b9713 HS	358	const struct bch_sb_field_ops bch_sb_field_ops_members_v2 = {
	359	.validate = bch2_sb_members_v2_validate,
	360	.to_text = bch2_sb_members_v2_to_text,
fb8e5b4c	361	};
94119eeb KO	362
	363	void bch2_sb_members_from_cpu(struct bch_fs *c)
	364	{
	365	struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);
94119eeb KO	366
94119eeb KO	367	rcu_read_lock();
41b84fb4 KO	368	for_each_member_device_rcu(c, ca, NULL) {
41b84fb4 KO	369	struct bch_member *m = __bch2_members_v2_get_mut(mi, ca->dev_idx);
94119eeb	370
41b84fb4	371	for (unsigned e = 0; e < BCH_MEMBER_ERROR_NR; e++)
94119eeb KO	372	m->errors[e] = cpu_to_le64(atomic64_read(&ca->errors[e]));
	373	}
	374	rcu_read_unlock();
	375	}
	376
	377	void bch2_dev_io_errors_to_text(struct printbuf out, struct bch_dev ca)
	378	{
	379	struct bch_fs *c = ca->fs;
	380	struct bch_member m;
	381
	382	mutex_lock(&ca->fs->sb_lock);
	383	m = bch2_sb_member_get(c->disk_sb.sb, ca->dev_idx);
	384	mutex_unlock(&ca->fs->sb_lock);
	385
	386	printbuf_tabstop_push(out, 12);
	387
	388	prt_str(out, "IO errors since filesystem creation");
	389	prt_newline(out);
	390
	391	printbuf_indent_add(out, 2);
	392	for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
	393	prt_printf(out, "%s:", bch2_member_error_strs[i]);
	394	prt_tab(out);
	395	prt_u64(out, atomic64_read(&ca->errors[i]));
	396	prt_newline(out);
	397	}
	398	printbuf_indent_sub(out, 2);
	399
	400	prt_str(out, "IO errors since ");
	401	bch2_pr_time_units(out, (ktime_get_real_seconds() - le64_to_cpu(m.errors_reset_time)) * NSEC_PER_SEC);
	402	prt_str(out, " ago");
	403	prt_newline(out);
	404
	405	printbuf_indent_add(out, 2);
	406	for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
	407	prt_printf(out, "%s:", bch2_member_error_strs[i]);
	408	prt_tab(out);
	409	prt_u64(out, atomic64_read(&ca->errors[i]) - le64_to_cpu(m.errors_at_reset[i]));
	410	prt_newline(out);
	411	}
	412	printbuf_indent_sub(out, 2);
	413	}
	414
	415	void bch2_dev_errors_reset(struct bch_dev *ca)
	416	{
	417	struct bch_fs *c = ca->fs;
	418	struct bch_member *m;
	419
	420	mutex_lock(&c->sb_lock);
	421	m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx);
	422	for (unsigned i = 0; i < ARRAY_SIZE(m->errors_at_reset); i++)
	423	m->errors_at_reset[i] = cpu_to_le64(atomic64_read(&ca->errors[i]));
	424	m->errors_reset_time = ktime_get_real_seconds();
	425
	426	bch2_write_super(c);
	427	mutex_unlock(&c->sb_lock);
	428	}