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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2015-03-18 17:19:10 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2015-11-25 09:22:02 -0700 |
| commit | f5ec0173b92ba88c7b38e32a7ee3dd3b1568ea50 (patch) | |
| tree | ece8122c72457a0cbfdc5119edb4737b23553c81 /drivers/block | |
| parent | 9fa48269197f7fcb8ccfbef03c3f3a8616872579 (diff) | |
| download | linux-stable-f5ec0173b92ba88c7b38e32a7ee3dd3b1568ea50.tar.gz linux-stable-f5ec0173b92ba88c7b38e32a7ee3dd3b1568ea50.tar.bz2 linux-stable-f5ec0173b92ba88c7b38e32a7ee3dd3b1568ea50.zip | |
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: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_debugfs.c | 10 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_int.h | 1 |
2 files changed, 11 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_debugfs.c b/drivers/block/drbd/drbd_debugfs.c index 6b88a35fb048..96a0107a72ea 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 3efaf181438c..08f266eab3ee 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 */ |