[PATCH 16/29] staging: lustre: mdc: deactive MDT permanently

From: James Simmons
Date: Thu Oct 27 2016 - 18:13:11 EST


From: wang di <di.wang@xxxxxxxxx>

Add active proc entry for MDC, and mark MDC to
be inactive once the MDC is deactivated.

Signed-off-by: wang di <di.wang@xxxxxxxxx>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-6586
Reviewed-on: http://review.whamcloud.com/14747
Reviewed-by: Lai Siyao <lai.siyao@xxxxxxxxx>
Reviewed-by: James Simmons <uja.ornl@xxxxxxxxx>
Reviewed-by: Oleg Drokin <oleg.drokin@xxxxxxxxx>
Signed-off-by: James Simmons <jsimmons@xxxxxxxxxxxxx>
---
drivers/staging/lustre/lustre/lmv/lmv_obd.c | 1 +
drivers/staging/lustre/lustre/mdc/lproc_mdc.c | 37 +++++++++++++++++++++++++
2 files changed, 38 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/lustre/lustre/lmv/lmv_obd.c b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
index 7a8d1c8..12e8b1e 100644
--- a/drivers/staging/lustre/lustre/lmv/lmv_obd.c
+++ b/drivers/staging/lustre/lustre/lmv/lmv_obd.c
@@ -62,6 +62,7 @@ static void lmv_activate_target(struct lmv_obd *lmv,

tgt->ltd_active = activate;
lmv->desc.ld_active_tgt_count += (activate ? 1 : -1);
+ tgt->ltd_exp->exp_obd->obd_inactive = !activate;
}

/**
diff --git a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
index c89003a..9021c46 100644
--- a/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
+++ b/drivers/staging/lustre/lustre/mdc/lproc_mdc.c
@@ -36,6 +36,42 @@
#include "../include/lprocfs_status.h"
#include "mdc_internal.h"

+static ssize_t active_show(struct kobject *kobj, struct attribute *attr,
+ char *buf)
+{
+ struct obd_device *dev = container_of(kobj, struct obd_device,
+ obd_kobj);
+
+ return sprintf(buf, "%u\n", !dev->u.cli.cl_import->imp_deactive);
+}
+
+static ssize_t active_store(struct kobject *kobj, struct attribute *attr,
+ const char *buffer, size_t count)
+{
+ struct obd_device *dev = container_of(kobj, struct obd_device,
+ obd_kobj);
+ unsigned long val;
+ int rc;
+
+ rc = kstrtoul(buffer, 10, &val);
+ if (rc)
+ return rc;
+
+ if (val < 0 || val > 1)
+ return -ERANGE;
+
+ /* opposite senses */
+ if (dev->u.cli.cl_import->imp_deactive == val) {
+ rc = ptlrpc_set_import_active(dev->u.cli.cl_import, val);
+ if (rc)
+ count = rc;
+ } else {
+ CDEBUG(D_CONFIG, "activate %lu: ignoring repeat request\n", val);
+ }
+ return count;
+}
+LUSTRE_RW_ATTR(active);
+
static ssize_t max_rpcs_in_flight_show(struct kobject *kobj,
struct attribute *attr,
char *buf)
@@ -176,6 +212,7 @@ static ssize_t max_pages_per_rpc_show(struct kobject *kobj,
};

static struct attribute *mdc_attrs[] = {
+ &lustre_attr_active.attr,
&lustre_attr_max_rpcs_in_flight.attr,
&lustre_attr_max_mod_rpcs_in_flight.attr,
&lustre_attr_max_pages_per_rpc.attr,
--
1.7.1