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When specifying raidz vdev name, parity count should match

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When specifying the name of a RAIDZ vdev on the command line, it can be
specified as raidz-<vdevID> or raidzP-<vdevID>.
e.g. `zpool clear poolname raidz-0` or `zpool clear poolname raidz2-0`

If the parity is specified in the vdev name, it should match the actual
parity of that RAIDZ vdev, otherwise the command should fail.  This
commit makes it so.

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Co-authored-by: Stuart Maybee <stuart.maybee@comcast.net>
Signed-off-by: Matthew Ahrens <mahrens@delphix.com>
Closes #11742
This commit is contained in:
Matthew Ahrens 2021-03-26 11:12:22 -07:00 committed by GitHub
parent 2037edbdaa
commit b85f47efd0
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1 changed files with 30 additions and 0 deletions
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30
lib/libzfs/libzfs_pool.c
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@ -2669,6 +2669,36 @@ vdev_to_nvlist_iter(nvlist_t *nv, nvlist_t *search, boolean_t *avail_spare,
errno = 0; errno = 0;
vdev_id = strtoull(idx, &end, 10); vdev_id = strtoull(idx, &end, 10);
/*
* If we are looking for a raidz and a parity is
* specified, make sure it matches.
*/
int rzlen = strlen(VDEV_TYPE_RAIDZ);
assert(rzlen == strlen(VDEV_TYPE_DRAID));
int typlen = strlen(type);
if ((strncmp(type, VDEV_TYPE_RAIDZ, rzlen) == 0 ||
strncmp(type, VDEV_TYPE_DRAID, rzlen) == 0) &&
typlen != rzlen) {
uint64_t vdev_parity;
int parity = *(type + rzlen) - '0';
if (parity <= 0 || parity > 3 ||
(typlen - rzlen) != 1) {
/*
* Nonsense parity specified, can
* never match
*/
free(type);
return (NULL);
}
verify(nvlist_lookup_uint64(nv,
ZPOOL_CONFIG_NPARITY, &vdev_parity) == 0);
if ((int)vdev_parity != parity) {
free(type);
break;
}
}
free(type); free(type);
if (errno != 0) if (errno != 0)
return (NULL); return (NULL);