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zdb: Filter log spacemaps by vdev

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When requested to dump metaslabs only for specific vdev, apply the
filter also to log spacemaps to reduce the output.  Unfortunately
filtering by metaslab numbers is more difficult so leave those.

While there, tune the output formatting.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Alexander Motin <alexander.motin@TrueNAS.com>
Closes #17643
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Alexander Motin 2025-08-21 11:19:46 -04:00 committed by GitHub
parent 574eec2964
commit 94413bc75d
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GPG Key ID: B5690EEEBB952194
1 changed files with 22 additions and 15 deletions
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37
cmd/zdb/zdb.c
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@ -1586,9 +1586,8 @@ dump_spacemap(objset_t *os, space_map_t *sm)
continue;
}
uint8_t words;
char entry_type;
uint64_t entry_off, entry_run, entry_vdev = SM_NO_VDEVID;
uint64_t entry_off, entry_run, entry_vdev;
if (sm_entry_is_single_word(word)) {
entry_type = (SM_TYPE_DECODE(word) == SM_ALLOC) ?
@ -1596,35 +1595,43 @@ dump_spacemap(objset_t *os, space_map_t *sm)
entry_off = (SM_OFFSET_DECODE(word) << mapshift) +
sm->sm_start;
entry_run = SM_RUN_DECODE(word) << mapshift;
words = 1;
(void) printf("\t [%6llu] %c "
"range: %012llx-%012llx size: %08llx\n",
(u_longlong_t)entry_id, entry_type,
(u_longlong_t)entry_off,
(u_longlong_t)(entry_off + entry_run - 1),
(u_longlong_t)entry_run);
} else {
/* it is a two-word entry so we read another word */
ASSERT(sm_entry_is_double_word(word));
uint64_t extra_word;
offset += sizeof (extra_word);
ASSERT3U(offset, <, space_map_length(sm));
VERIFY0(dmu_read(os, space_map_object(sm), offset,
sizeof (extra_word), &extra_word,
DMU_READ_PREFETCH));
ASSERT3U(offset, <=, space_map_length(sm));
entry_run = SM2_RUN_DECODE(word) << mapshift;
entry_vdev = SM2_VDEV_DECODE(word);
entry_type = (SM2_TYPE_DECODE(extra_word) == SM_ALLOC) ?
'A' : 'F';
entry_off = (SM2_OFFSET_DECODE(extra_word) <<
mapshift) + sm->sm_start;
words = 2;
}
(void) printf("\t [%6llu] %c range:"
" %010llx-%010llx size: %06llx vdev: %06llu words: %u\n",
(u_longlong_t)entry_id,
entry_type, (u_longlong_t)entry_off,
(u_longlong_t)(entry_off + entry_run),
(u_longlong_t)entry_run,
(u_longlong_t)entry_vdev, words);
if (zopt_metaslab_args == 0 ||
zopt_metaslab[0] == entry_vdev) {
(void) printf("\t [%6llu] %c "
"range: %012llx-%012llx size: %08llx "
"vdev: %llu\n",
(u_longlong_t)entry_id, entry_type,
(u_longlong_t)entry_off,
(u_longlong_t)(entry_off + entry_run - 1),
(u_longlong_t)entry_run,
(u_longlong_t)entry_vdev);
}
}
if (entry_type == 'A')
alloc += entry_run;
@ -1873,7 +1880,7 @@ dump_metaslabs(spa_t *spa)
(void) printf("\nMetaslabs:\n");
if (!dump_opt['d'] && zopt_metaslab_args > 0) {
if (zopt_metaslab_args > 0) {
c = zopt_metaslab[0];
if (c >= children)