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alistair23-linux
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drbd: Force flag for the detach operation 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
hifive-unleashed-5.1
Philipp Reisner 2011-03-14 11:54:47 +01:00
parent 5ca1de0384
commit 02ee8f95fa
3 changed files with 19 additions and 2 deletions
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2
drivers/block/drbd/drbd_main.c
View File

@ -495,7 +495,7 @@ static int cl_wide_st_chg(struct drbd_conf *mdev,
((os.role != R_PRIMARY && ns.role == R_PRIMARY) ||
(os.conn != C_STARTING_SYNC_T && ns.conn == C_STARTING_SYNC_T) ||
(os.conn != C_STARTING_SYNC_S && ns.conn == C_STARTING_SYNC_S) ||
(os.disk != D_DISKLESS && ns.disk == D_DISKLESS))) ||
(os.disk != D_FAILED && ns.disk == D_FAILED))) ||
(os.conn >= C_CONNECTED && ns.conn == C_DISCONNECTING) ||
(os.conn == C_CONNECTED && ns.conn == C_VERIFY_S);
}

15
drivers/block/drbd/drbd_nl.c
View File

@ -1337,17 +1337,32 @@ static int drbd_nl_detach(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp,
{
enum drbd_ret_code retcode;
int ret;
struct detach dt = {};
if (!detach_from_tags(mdev, nlp->tag_list, &dt)) {
reply->ret_code = ERR_MANDATORY_TAG;
goto out;
}
if (dt.detach_force) {
drbd_force_state(mdev, NS(disk, D_FAILED));
reply->ret_code = SS_SUCCESS;
goto out;
}
drbd_suspend_io(mdev); /* so no-one is stuck in drbd_al_begin_io */
retcode = drbd_request_state(mdev, NS(disk, D_FAILED));
/* D_FAILED will transition to DISKLESS. */
ret = wait_event_interruptible(mdev->misc_wait,
mdev->state.disk != D_FAILED);
drbd_resume_io(mdev);
if ((int)retcode == (int)SS_IS_DISKLESS)
retcode = SS_NOTHING_TO_DO;
if (ret)
retcode = ERR_INTR;
reply->ret_code = retcode;
out:
return 0;
}

4
include/linux/drbd_nl.h
View File

@ -33,7 +33,9 @@ NL_PACKET(disk_conf, 3,
NL_BIT( 58, T_MAY_IGNORE, no_disk_drain)
)
NL_PACKET(detach, 4, )
NL_PACKET(detach, 4,
NL_BIT( 88, T_MANDATORY, detach_force)
)
NL_PACKET(net_conf, 5,
NL_STRING( 8, T_MANDATORY, my_addr, 128)