Commit f5ec0173 authored by Lars Ellenberg's avatar Lars Ellenberg Committed by Jens Axboe

drbd: debugfs: expose ed_data_gen_id

The effective data generation ID may be interesting for debugging
purposes of scenarios involving diskless states.
Signed-off-by: default avatarPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: default avatarLars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 9fa48269
...@@ -771,6 +771,13 @@ static int device_data_gen_id_show(struct seq_file *m, void *ignored) ...@@ -771,6 +771,13 @@ static int device_data_gen_id_show(struct seq_file *m, void *ignored)
return 0; 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) \ #define drbd_debugfs_device_attr(name) \
static int device_ ## name ## _open(struct inode *inode, struct file *file) \ static int device_ ## name ## _open(struct inode *inode, struct file *file) \
{ \ { \
...@@ -796,6 +803,7 @@ drbd_debugfs_device_attr(oldest_requests) ...@@ -796,6 +803,7 @@ drbd_debugfs_device_attr(oldest_requests)
drbd_debugfs_device_attr(act_log_extents) drbd_debugfs_device_attr(act_log_extents)
drbd_debugfs_device_attr(resync_extents) drbd_debugfs_device_attr(resync_extents)
drbd_debugfs_device_attr(data_gen_id) drbd_debugfs_device_attr(data_gen_id)
drbd_debugfs_device_attr(ed_gen_id)
void drbd_debugfs_device_add(struct drbd_device *device) void drbd_debugfs_device_add(struct drbd_device *device)
{ {
...@@ -839,6 +847,7 @@ 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(act_log_extents);
DCF(resync_extents); DCF(resync_extents);
DCF(data_gen_id); DCF(data_gen_id);
DCF(ed_gen_id);
#undef DCF #undef DCF
return; return;
...@@ -854,6 +863,7 @@ void drbd_debugfs_device_cleanup(struct drbd_device *device) ...@@ -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_act_log_extents);
drbd_debugfs_remove(&device->debugfs_vol_resync_extents); drbd_debugfs_remove(&device->debugfs_vol_resync_extents);
drbd_debugfs_remove(&device->debugfs_vol_data_gen_id); drbd_debugfs_remove(&device->debugfs_vol_data_gen_id);
drbd_debugfs_remove(&device->debugfs_vol_ed_gen_id);
drbd_debugfs_remove(&device->debugfs_vol); drbd_debugfs_remove(&device->debugfs_vol);
} }
......
...@@ -835,6 +835,7 @@ struct drbd_device { ...@@ -835,6 +835,7 @@ struct drbd_device {
struct dentry *debugfs_vol_act_log_extents; struct dentry *debugfs_vol_act_log_extents;
struct dentry *debugfs_vol_resync_extents; struct dentry *debugfs_vol_resync_extents;
struct dentry *debugfs_vol_data_gen_id; struct dentry *debugfs_vol_data_gen_id;
struct dentry *debugfs_vol_ed_gen_id;
#endif #endif
unsigned int vnr; /* volume number within the connection */ unsigned int vnr; /* volume number within the connection */
......
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