mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
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421 lines
11 KiB
C
421 lines
11 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include "bcachefs.h"
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#include "disk_groups.h"
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#include "opts.h"
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#include "replicas.h"
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#include "sb-members.h"
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#include "super-io.h"
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#define x(t, n, ...) [n] = #t,
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static const char * const bch2_iops_measurements[] = {
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BCH_IOPS_MEASUREMENTS()
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NULL
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};
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char * const bch2_member_error_strs[] = {
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BCH_MEMBER_ERROR_TYPES()
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NULL
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};
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#undef x
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/* Code for bch_sb_field_members_v1: */
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struct bch_member *bch2_members_v2_get_mut(struct bch_sb *sb, int i)
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{
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return __bch2_members_v2_get_mut(bch2_sb_field_get(sb, members_v2), i);
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}
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static struct bch_member members_v2_get(struct bch_sb_field_members_v2 *mi, int i)
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{
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struct bch_member ret, *p = __bch2_members_v2_get_mut(mi, i);
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memset(&ret, 0, sizeof(ret));
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memcpy(&ret, p, min_t(size_t, le16_to_cpu(mi->member_bytes), sizeof(ret)));
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return ret;
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}
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static struct bch_member *members_v1_get_mut(struct bch_sb_field_members_v1 *mi, int i)
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{
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return (void *) mi->_members + (i * BCH_MEMBER_V1_BYTES);
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}
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static struct bch_member members_v1_get(struct bch_sb_field_members_v1 *mi, int i)
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{
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struct bch_member ret, *p = members_v1_get_mut(mi, i);
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memset(&ret, 0, sizeof(ret));
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memcpy(&ret, p, min_t(size_t, BCH_MEMBER_V1_BYTES, sizeof(ret)));
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return ret;
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}
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struct bch_member bch2_sb_member_get(struct bch_sb *sb, int i)
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{
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struct bch_sb_field_members_v2 *mi2 = bch2_sb_field_get(sb, members_v2);
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if (mi2)
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return members_v2_get(mi2, i);
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struct bch_sb_field_members_v1 *mi1 = bch2_sb_field_get(sb, members_v1);
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return members_v1_get(mi1, i);
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}
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static int sb_members_v2_resize_entries(struct bch_fs *c)
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{
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struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);
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if (le16_to_cpu(mi->member_bytes) < sizeof(struct bch_member)) {
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unsigned u64s = DIV_ROUND_UP((sizeof(*mi) + sizeof(mi->_members[0]) *
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c->disk_sb.sb->nr_devices), 8);
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mi = bch2_sb_field_resize(&c->disk_sb, members_v2, u64s);
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if (!mi)
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return -BCH_ERR_ENOSPC_sb_members_v2;
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for (int i = c->disk_sb.sb->nr_devices - 1; i >= 0; --i) {
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void *dst = (void *) mi->_members + (i * sizeof(struct bch_member));
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memmove(dst, __bch2_members_v2_get_mut(mi, i), le16_to_cpu(mi->member_bytes));
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memset(dst + le16_to_cpu(mi->member_bytes),
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0, (sizeof(struct bch_member) - le16_to_cpu(mi->member_bytes)));
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}
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mi->member_bytes = cpu_to_le16(sizeof(struct bch_member));
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}
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return 0;
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}
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int bch2_sb_members_v2_init(struct bch_fs *c)
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{
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struct bch_sb_field_members_v1 *mi1;
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struct bch_sb_field_members_v2 *mi2;
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if (!bch2_sb_field_get(c->disk_sb.sb, members_v2)) {
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mi2 = bch2_sb_field_resize(&c->disk_sb, members_v2,
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DIV_ROUND_UP(sizeof(*mi2) +
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sizeof(struct bch_member) * c->sb.nr_devices,
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sizeof(u64)));
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mi1 = bch2_sb_field_get(c->disk_sb.sb, members_v1);
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memcpy(&mi2->_members[0], &mi1->_members[0],
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BCH_MEMBER_V1_BYTES * c->sb.nr_devices);
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memset(&mi2->pad[0], 0, sizeof(mi2->pad));
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mi2->member_bytes = cpu_to_le16(BCH_MEMBER_V1_BYTES);
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}
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return sb_members_v2_resize_entries(c);
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}
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int bch2_sb_members_cpy_v2_v1(struct bch_sb_handle *disk_sb)
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{
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struct bch_sb_field_members_v1 *mi1;
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struct bch_sb_field_members_v2 *mi2;
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mi1 = bch2_sb_field_resize(disk_sb, members_v1,
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DIV_ROUND_UP(sizeof(*mi1) + BCH_MEMBER_V1_BYTES *
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disk_sb->sb->nr_devices, sizeof(u64)));
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if (!mi1)
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return -BCH_ERR_ENOSPC_sb_members;
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mi2 = bch2_sb_field_get(disk_sb->sb, members_v2);
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for (unsigned i = 0; i < disk_sb->sb->nr_devices; i++)
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memcpy(members_v1_get_mut(mi1, i), __bch2_members_v2_get_mut(mi2, i), BCH_MEMBER_V1_BYTES);
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return 0;
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}
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static int validate_member(struct printbuf *err,
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struct bch_member m,
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struct bch_sb *sb,
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int i)
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{
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if (le64_to_cpu(m.nbuckets) > LONG_MAX) {
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prt_printf(err, "device %u: too many buckets (got %llu, max %lu)",
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i, le64_to_cpu(m.nbuckets), LONG_MAX);
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return -BCH_ERR_invalid_sb_members;
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}
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if (le64_to_cpu(m.nbuckets) -
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le16_to_cpu(m.first_bucket) < BCH_MIN_NR_NBUCKETS) {
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prt_printf(err, "device %u: not enough buckets (got %llu, max %u)",
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i, le64_to_cpu(m.nbuckets), BCH_MIN_NR_NBUCKETS);
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return -BCH_ERR_invalid_sb_members;
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}
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if (le16_to_cpu(m.bucket_size) <
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le16_to_cpu(sb->block_size)) {
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prt_printf(err, "device %u: bucket size %u smaller than block size %u",
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i, le16_to_cpu(m.bucket_size), le16_to_cpu(sb->block_size));
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return -BCH_ERR_invalid_sb_members;
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}
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if (le16_to_cpu(m.bucket_size) <
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BCH_SB_BTREE_NODE_SIZE(sb)) {
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prt_printf(err, "device %u: bucket size %u smaller than btree node size %llu",
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i, le16_to_cpu(m.bucket_size), BCH_SB_BTREE_NODE_SIZE(sb));
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return -BCH_ERR_invalid_sb_members;
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}
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return 0;
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}
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static void member_to_text(struct printbuf *out,
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struct bch_member m,
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struct bch_sb_field_disk_groups *gi,
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struct bch_sb *sb,
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int i)
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{
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unsigned data_have = bch2_sb_dev_has_data(sb, i);
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u64 bucket_size = le16_to_cpu(m.bucket_size);
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u64 device_size = le64_to_cpu(m.nbuckets) * bucket_size;
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if (!bch2_member_exists(&m))
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return;
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prt_printf(out, "Device:");
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prt_tab(out);
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prt_printf(out, "%u", i);
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prt_newline(out);
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printbuf_indent_add(out, 2);
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prt_printf(out, "Label:");
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prt_tab(out);
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if (BCH_MEMBER_GROUP(&m)) {
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unsigned idx = BCH_MEMBER_GROUP(&m) - 1;
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if (idx < disk_groups_nr(gi))
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prt_printf(out, "%s (%u)",
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gi->entries[idx].label, idx);
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else
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prt_printf(out, "(bad disk labels section)");
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} else {
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prt_printf(out, "(none)");
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}
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prt_newline(out);
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prt_printf(out, "UUID:");
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prt_tab(out);
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pr_uuid(out, m.uuid.b);
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prt_newline(out);
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prt_printf(out, "Size:");
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prt_tab(out);
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prt_units_u64(out, device_size << 9);
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prt_newline(out);
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for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
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prt_printf(out, "%s errors:", bch2_member_error_strs[i]);
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prt_tab(out);
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prt_u64(out, le64_to_cpu(m.errors[i]));
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prt_newline(out);
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}
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for (unsigned i = 0; i < BCH_IOPS_NR; i++) {
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prt_printf(out, "%s iops:", bch2_iops_measurements[i]);
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prt_tab(out);
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prt_printf(out, "%u", le32_to_cpu(m.iops[i]));
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prt_newline(out);
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}
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prt_printf(out, "Bucket size:");
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prt_tab(out);
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prt_units_u64(out, bucket_size << 9);
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prt_newline(out);
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prt_printf(out, "First bucket:");
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prt_tab(out);
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prt_printf(out, "%u", le16_to_cpu(m.first_bucket));
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prt_newline(out);
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prt_printf(out, "Buckets:");
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prt_tab(out);
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prt_printf(out, "%llu", le64_to_cpu(m.nbuckets));
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prt_newline(out);
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prt_printf(out, "Last mount:");
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prt_tab(out);
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if (m.last_mount)
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bch2_prt_datetime(out, le64_to_cpu(m.last_mount));
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else
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prt_printf(out, "(never)");
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prt_newline(out);
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prt_printf(out, "State:");
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prt_tab(out);
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prt_printf(out, "%s",
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BCH_MEMBER_STATE(&m) < BCH_MEMBER_STATE_NR
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? bch2_member_states[BCH_MEMBER_STATE(&m)]
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: "unknown");
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prt_newline(out);
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prt_printf(out, "Data allowed:");
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prt_tab(out);
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if (BCH_MEMBER_DATA_ALLOWED(&m))
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prt_bitflags(out, bch2_data_types, BCH_MEMBER_DATA_ALLOWED(&m));
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else
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prt_printf(out, "(none)");
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prt_newline(out);
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prt_printf(out, "Has data:");
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prt_tab(out);
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if (data_have)
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prt_bitflags(out, bch2_data_types, data_have);
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else
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prt_printf(out, "(none)");
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prt_newline(out);
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prt_printf(out, "Discard:");
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prt_tab(out);
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prt_printf(out, "%llu", BCH_MEMBER_DISCARD(&m));
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prt_newline(out);
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prt_printf(out, "Freespace initialized:");
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prt_tab(out);
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prt_printf(out, "%llu", BCH_MEMBER_FREESPACE_INITIALIZED(&m));
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prt_newline(out);
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printbuf_indent_sub(out, 2);
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}
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static int bch2_sb_members_v1_validate(struct bch_sb *sb,
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struct bch_sb_field *f,
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struct printbuf *err)
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{
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struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1);
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unsigned i;
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if ((void *) members_v1_get_mut(mi, sb->nr_devices) > vstruct_end(&mi->field)) {
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prt_printf(err, "too many devices for section size");
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return -BCH_ERR_invalid_sb_members;
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}
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for (i = 0; i < sb->nr_devices; i++) {
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struct bch_member m = members_v1_get(mi, i);
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int ret = validate_member(err, m, sb, i);
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if (ret)
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return ret;
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}
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return 0;
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}
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static void bch2_sb_members_v1_to_text(struct printbuf *out, struct bch_sb *sb,
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struct bch_sb_field *f)
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{
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struct bch_sb_field_members_v1 *mi = field_to_type(f, members_v1);
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struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups);
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unsigned i;
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for (i = 0; i < sb->nr_devices; i++)
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member_to_text(out, members_v1_get(mi, i), gi, sb, i);
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}
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const struct bch_sb_field_ops bch_sb_field_ops_members_v1 = {
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.validate = bch2_sb_members_v1_validate,
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.to_text = bch2_sb_members_v1_to_text,
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};
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static void bch2_sb_members_v2_to_text(struct printbuf *out, struct bch_sb *sb,
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struct bch_sb_field *f)
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{
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struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2);
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struct bch_sb_field_disk_groups *gi = bch2_sb_field_get(sb, disk_groups);
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unsigned i;
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for (i = 0; i < sb->nr_devices; i++)
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member_to_text(out, members_v2_get(mi, i), gi, sb, i);
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}
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static int bch2_sb_members_v2_validate(struct bch_sb *sb,
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struct bch_sb_field *f,
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struct printbuf *err)
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{
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struct bch_sb_field_members_v2 *mi = field_to_type(f, members_v2);
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size_t mi_bytes = (void *) __bch2_members_v2_get_mut(mi, sb->nr_devices) -
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(void *) mi;
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if (mi_bytes > vstruct_bytes(&mi->field)) {
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prt_printf(err, "section too small (%zu > %zu)",
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mi_bytes, vstruct_bytes(&mi->field));
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return -BCH_ERR_invalid_sb_members;
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}
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for (unsigned i = 0; i < sb->nr_devices; i++) {
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int ret = validate_member(err, members_v2_get(mi, i), sb, i);
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if (ret)
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return ret;
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}
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return 0;
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}
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const struct bch_sb_field_ops bch_sb_field_ops_members_v2 = {
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.validate = bch2_sb_members_v2_validate,
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.to_text = bch2_sb_members_v2_to_text,
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};
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void bch2_sb_members_from_cpu(struct bch_fs *c)
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{
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struct bch_sb_field_members_v2 *mi = bch2_sb_field_get(c->disk_sb.sb, members_v2);
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struct bch_dev *ca;
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unsigned i, e;
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rcu_read_lock();
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for_each_member_device_rcu(ca, c, i, NULL) {
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struct bch_member *m = __bch2_members_v2_get_mut(mi, i);
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for (e = 0; e < BCH_MEMBER_ERROR_NR; e++)
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m->errors[e] = cpu_to_le64(atomic64_read(&ca->errors[e]));
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}
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rcu_read_unlock();
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}
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void bch2_dev_io_errors_to_text(struct printbuf *out, struct bch_dev *ca)
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{
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struct bch_fs *c = ca->fs;
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struct bch_member m;
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mutex_lock(&ca->fs->sb_lock);
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m = bch2_sb_member_get(c->disk_sb.sb, ca->dev_idx);
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mutex_unlock(&ca->fs->sb_lock);
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printbuf_tabstop_push(out, 12);
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prt_str(out, "IO errors since filesystem creation");
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prt_newline(out);
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printbuf_indent_add(out, 2);
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for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
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prt_printf(out, "%s:", bch2_member_error_strs[i]);
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prt_tab(out);
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prt_u64(out, atomic64_read(&ca->errors[i]));
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prt_newline(out);
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}
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printbuf_indent_sub(out, 2);
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prt_str(out, "IO errors since ");
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bch2_pr_time_units(out, (ktime_get_real_seconds() - le64_to_cpu(m.errors_reset_time)) * NSEC_PER_SEC);
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prt_str(out, " ago");
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prt_newline(out);
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printbuf_indent_add(out, 2);
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for (unsigned i = 0; i < BCH_MEMBER_ERROR_NR; i++) {
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prt_printf(out, "%s:", bch2_member_error_strs[i]);
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prt_tab(out);
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prt_u64(out, atomic64_read(&ca->errors[i]) - le64_to_cpu(m.errors_at_reset[i]));
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prt_newline(out);
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}
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printbuf_indent_sub(out, 2);
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}
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void bch2_dev_errors_reset(struct bch_dev *ca)
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{
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struct bch_fs *c = ca->fs;
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struct bch_member *m;
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mutex_lock(&c->sb_lock);
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m = bch2_members_v2_get_mut(c->disk_sb.sb, ca->dev_idx);
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for (unsigned i = 0; i < ARRAY_SIZE(m->errors_at_reset); i++)
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m->errors_at_reset[i] = cpu_to_le64(atomic64_read(&ca->errors[i]));
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m->errors_reset_time = ktime_get_real_seconds();
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bch2_write_super(c);
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mutex_unlock(&c->sb_lock);
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}
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