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

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

drivers/block/drbd/drbd_debugfs.c

+10 −0
Original line number Diff line number Diff line
@@ -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);

}

drivers/block/drbd/drbd_int.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */