diff options
| author | Philipp Reisner <philipp.reisner@linbit.com> | 2010-05-31 10:14:17 +0200 |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2010-10-14 14:52:53 +0200 |
| commit | 265be2d09853d425ad14a61cda0ca63345613d0c (patch) | |
| tree | cc2f419d8aaa41fd088f3d24ca134c4d7f51aa64 /drivers/block/drbd/drbd_req.c | |
| parent | 905cd7d8ac9b18e1f122b90dbebe1246b1c364fd (diff) | |
drbd: Finished the "on-no-data-accessible suspend-io;" functionality
When no data is accessible (no connection to the peer, nor a local disk)
allow the user to select to freeze all IO operations instead of getting
IO errors.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_req.c')
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 48647589aa0..8259d4f7728 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -226,6 +226,8 @@ void _req_may_be_done(struct drbd_request *req, struct bio_and_error *m) return; if (s & RQ_LOCAL_PENDING) return; + if (mdev->state.susp) + return; if (req->master_bio) { /* this is data_received (remote read) @@ -634,6 +636,28 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what, /* else: done by handed_over_to_network */ break; + case fail_frozen_disk_io: + if (!(req->rq_state & RQ_LOCAL_COMPLETED)) + break; + + _req_may_be_done(req, m); + break; + + case restart_frozen_disk_io: + if (!(req->rq_state & RQ_LOCAL_COMPLETED)) + break; + + req->rq_state &= ~RQ_LOCAL_COMPLETED; + + rv = MR_READ; + if (bio_data_dir(req->master_bio) == WRITE) + rv = MR_WRITE; + + get_ldev(mdev); + req->w.cb = w_restart_disk_io; + drbd_queue_work(&mdev->data.work, &req->w); + break; + case resend: /* If RQ_NET_OK is already set, we got a P_WRITE_ACK or P_RECV_ACK before the connection loss; only P_BARRIER_ACK was missing. |