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Zdb should be able to open the root dataset

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If the pool/dataset command-line argument is specified with a trailing
slash, for example, "tank/", it is interpreted as the root dataset.

Signed-off-by: Tim Chase <tim@chase2k.com>
Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Closes #3415
This commit is contained in:
Tim Chase 2015-05-14 12:45:56 -05:00 committed by Brian Behlendorf
parent 79065ed5a4
commit b1b85c8772
2 changed files with 16 additions and 1 deletions
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12
cmd/zdb/zdb.c
View File

@ -3572,6 +3572,7 @@ main(int argc, char **argv)
int rewind = ZPOOL_NEVER_REWIND;
char *spa_config_path_env;
const char *opts = "bcdhilmMI:suCDRSAFLXevp:t:U:P";
boolean_t target_is_spa = B_TRUE;
(void) setrlimit(RLIMIT_NOFILE, &rl);
(void) enable_extended_FILE_stdio(-1, -1);
@ -3740,8 +3741,17 @@ main(int argc, char **argv)
}
}
if (strpbrk(target, "/@") != NULL) {
size_t targetlen;
target_is_spa = B_FALSE;
targetlen = strlen(target);
if (targetlen && target[targetlen - 1] == '/')
target[targetlen - 1] = '\0';
}
if (error == 0) {
if (strpbrk(target, "/@") == NULL || dump_opt['R']) {
if (target_is_spa || dump_opt['R']) {
error = spa_open_rewind(target, &spa, FTAG, policy,
NULL);
if (error) {

5
man/man8/zdb.8
View File

@ -55,6 +55,11 @@ The output of this command in general reflects the on-disk structure of a ZFS
pool, and is inherently unstable. The precise output of most invocations is
not documented, a knowledge of ZFS internals is assumed.
.P
If the \fIdataset\fR argument does not contain any \fB/\fR or \fB@\fR
characters, it is interpreted as a pool name. The root dataset can be
specified as \fIpool\fB/\fR (pool name followed by a slash).
.P
When operating on an imported and active pool it is possible, though unlikely,
that zdb may interpret inconsistent pool data and behave erratically.