From: Lars Ellenberg <lars.ellenb...@linbit.com>
The effective data generation ID may be interesting for debugging
purposes of scenarios involving diskless states.
Signed-off-by: Philipp Reisner <philipp.reis...@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenb...@linbit.com>
---
drivers/block/drbd/drbd_debugfs.c | 10 ++++++++++
drivers/block/drbd/drbd_int.h | 1 +
2 files changed, 11 insertions(+)
diff --git a/drivers/block/drbd/drbd_debugfs.c
b/drivers/block/drbd/drbd_debugfs.c
index 6b88a35..96a0107 100644
--- a/drivers/block/drbd/drbd_debugfs.c
+++ b/drivers/block/drbd/drbd_debugfs.c
@@ -771,6 +771,13 @@ static int device_data_gen_id_show(struct seq_file *m,
void *ignored)
return 0;
}
+static int device_ed_gen_id_show(struct seq_file *m, void *ignored)
+{
+ struct drbd_device *device = m->private;
+ seq_printf(m, "0x%016llX\n", (unsigned long long)device->ed_uuid);
+ return 0;
+}
+
#define drbd_debugfs_device_attr(name)
\
static int device_ ## name ## _open(struct inode *inode, struct file *file)
\
{
\
@@ -796,6 +803,7 @@ drbd_debugfs_device_attr(oldest_requests)
drbd_debugfs_device_attr(act_log_extents)
drbd_debugfs_device_attr(resync_extents)
drbd_debugfs_device_attr(data_gen_id)
+drbd_debugfs_device_attr(ed_gen_id)
void drbd_debugfs_device_add(struct drbd_device *device)
{
@@ -839,6 +847,7 @@ void drbd_debugfs_device_add(struct drbd_device *device)
DCF(act_log_extents);
DCF(resync_extents);
DCF(data_gen_id);
+ DCF(ed_gen_id);
#undef DCF
return;
@@ -854,6 +863,7 @@ void drbd_debugfs_device_cleanup(struct drbd_device *device)
drbd_debugfs_remove(&device->debugfs_vol_act_log_extents);
drbd_debugfs_remove(&device->debugfs_vol_resync_extents);
drbd_debugfs_remove(&device->debugfs_vol_data_gen_id);
+ drbd_debugfs_remove(&device->debugfs_vol_ed_gen_id);
drbd_debugfs_remove(&device->debugfs_vol);
}
diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h
index 3efaf18..08f266e 100644
--- a/drivers/block/drbd/drbd_int.h
+++ b/drivers/block/drbd/drbd_int.h
@@ -835,6 +835,7 @@ struct drbd_device {
struct dentry *debugfs_vol_act_log_extents;
struct dentry *debugfs_vol_resync_extents;
struct dentry *debugfs_vol_data_gen_id;
+ struct dentry *debugfs_vol_ed_gen_id;
#endif
unsigned int vnr; /* volume number within the connection */
--
1.9.1
--
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