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From fe626a8a8a1b1bc94ea95c693ec672109909e3dc Mon Sep 17 00:00:00 2001
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From: Redhairer Li <redhairer.li@intel.com>
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Date: Thu, 28 Jan 2021 22:03:39 +0800
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Subject: [PATCH 008/217] ndctl/namespace: Fix disable-namespace accounting
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relative to seed devices
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Seed namespaces are included in "ndctl disable-namespace all". However
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since the user never "creates" them it is surprising to see
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"disable-namespace" report 1 more namespace relative to the number that
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have been created. Catch attempts to disable a zero-sized namespace:
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Before:
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{
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"dev":"namespace1.0",
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"size":"492.00 MiB (515.90 MB)",
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"blockdev":"pmem1"
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}
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{
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"dev":"namespace1.1",
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"size":"492.00 MiB (515.90 MB)",
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"blockdev":"pmem1.1"
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}
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{
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"dev":"namespace1.2",
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"size":"492.00 MiB (515.90 MB)",
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"blockdev":"pmem1.2"
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}
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disabled 4 namespaces
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After:
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{
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"dev":"namespace1.0",
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"size":"492.00 MiB (515.90 MB)",
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"blockdev":"pmem1"
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}
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{
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"dev":"namespace1.3",
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"size":"492.00 MiB (515.90 MB)",
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"blockdev":"pmem1.3"
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}
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{
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"dev":"namespace1.1",
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"size":"492.00 MiB (515.90 MB)",
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"blockdev":"pmem1.1"
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}
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disabled 3 namespaces
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Signed-off-by: Redhairer Li <redhairer.li@intel.com>
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Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
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Link: https://lore.kernel.org/linux-nvdimm/20210128140339.3080-1-redhairer.li@intel.com/
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---
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ndctl/lib/libndctl.c | 10 ++++++++--
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ndctl/namespace.c | 8 ++++----
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ndctl/region.c | 2 +-
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3 files changed, 13 insertions(+), 7 deletions(-)
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diff --git a/ndctl/lib/libndctl.c b/ndctl/lib/libndctl.c
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index 36fb6fe..2f6d806 100644
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--- a/ndctl/lib/libndctl.c
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+++ b/ndctl/lib/libndctl.c
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@@ -4602,6 +4602,7 @@ NDCTL_EXPORT int ndctl_namespace_disable_safe(struct ndctl_namespace *ndns)
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const char *bdev = NULL;
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char path[50];
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int fd;
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+ unsigned long long size = ndctl_namespace_get_size(ndns);
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if (pfn && ndctl_pfn_is_enabled(pfn))
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bdev = ndctl_pfn_get_block_device(pfn);
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@@ -4631,8 +4632,13 @@ NDCTL_EXPORT int ndctl_namespace_disable_safe(struct ndctl_namespace *ndns)
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devname, bdev, strerror(errno));
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return -errno;
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}
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- } else
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- ndctl_namespace_disable_invalidate(ndns);
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+ } else {
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+ if (size == 0)
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+ /* No disable necessary due to no capacity allocated */
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+ return 1;
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+ else
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+ ndctl_namespace_disable_invalidate(ndns);
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+ }
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return 0;
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}
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diff --git a/ndctl/namespace.c b/ndctl/namespace.c
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index 0c8df9f..1feb74d 100644
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--- a/ndctl/namespace.c
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+++ b/ndctl/namespace.c
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@@ -1125,7 +1125,7 @@ static int namespace_prep_reconfig(struct ndctl_region *region,
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}
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rc = ndctl_namespace_disable_safe(ndns);
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- if (rc)
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+ if (rc < 0)
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return rc;
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ndctl_namespace_set_enforce_mode(ndns, NDCTL_NS_MODE_RAW);
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@@ -1431,7 +1431,7 @@ static int dax_clear_badblocks(struct ndctl_dax *dax)
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return -ENXIO;
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rc = ndctl_namespace_disable_safe(ndns);
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- if (rc) {
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+ if (rc < 0) {
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error("%s: unable to disable namespace: %s\n", devname,
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strerror(-rc));
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return rc;
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@@ -1455,7 +1455,7 @@ static int pfn_clear_badblocks(struct ndctl_pfn *pfn)
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return -ENXIO;
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rc = ndctl_namespace_disable_safe(ndns);
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- if (rc) {
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+ if (rc < 0) {
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error("%s: unable to disable namespace: %s\n", devname,
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strerror(-rc));
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return rc;
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@@ -1478,7 +1478,7 @@ static int raw_clear_badblocks(struct ndctl_namespace *ndns)
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return -ENXIO;
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rc = ndctl_namespace_disable_safe(ndns);
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- if (rc) {
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+ if (rc < 0) {
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error("%s: unable to disable namespace: %s\n", devname,
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strerror(-rc));
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return rc;
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diff --git a/ndctl/region.c b/ndctl/region.c
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index 3edb9b3..4552c4a 100644
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--- a/ndctl/region.c
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+++ b/ndctl/region.c
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@@ -70,7 +70,7 @@ static int region_action(struct ndctl_region *region, enum device_action mode)
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case ACTION_DISABLE:
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ndctl_namespace_foreach(region, ndns) {
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rc = ndctl_namespace_disable_safe(ndns);
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- if (rc)
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+ if (rc < 0)
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return rc;
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}
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rc = ndctl_region_disable_invalidate(region);
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--
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2.27.0
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