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drbd: Reinstate disabling AL updates with invalidate-remote 

Commit d0ef827e (drbd: switch configuration interface from connector to
genetlink) introduced a regression by removing the ability to set all
bits in the out of sync bitmap and to suspend updates to the activity log
of a disconnected device via the invalidate-remote management call.

Credits for reporting the issue are going to Arne Redlich.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner 2012-02-14 12:12:35 +01:00
parent b17f33cb0a
commit 25b0d6c8c1
2 changed files with 44 additions and 1 deletions
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40
drivers/block/drbd/drbd_nl.c
View File

@ -2410,9 +2410,47 @@ static int drbd_adm_simple_request_state(struct sk_buff *skb, struct genl_info *
return 0; return 0;
} }
static int drbd_bmio_set_susp_al(struct drbd_conf *mdev)
{
int rv;
rv = drbd_bmio_set_n_write(mdev);
drbd_suspend_al(mdev);
return rv;
}
int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info) int drbd_adm_invalidate_peer(struct sk_buff *skb, struct genl_info *info)
{ {
return drbd_adm_simple_request_state(skb, info, NS(conn, C_STARTING_SYNC_S)); int retcode; /* drbd_ret_code, drbd_state_rv */
struct drbd_conf *mdev;
retcode = drbd_adm_prepare(skb, info, DRBD_ADM_NEED_MINOR);
if (!adm_ctx.reply_skb)
return retcode;
if (retcode != NO_ERROR)
goto out;
mdev = adm_ctx.mdev;
retcode = _drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_S), CS_ORDERED);
if (retcode < SS_SUCCESS) {
if (retcode == SS_NEED_CONNECTION && mdev->state.role == R_PRIMARY) {
/* The peer will get a resync upon connect anyways.
* Just make that into a full resync. */
retcode = drbd_request_state(mdev, NS(pdsk, D_INCONSISTENT));
if (retcode >= SS_SUCCESS) {
if (drbd_bitmap_io(mdev, &drbd_bmio_set_susp_al,
"set_n_write from invalidate_peer",
BM_LOCKED_SET_ALLOWED))
retcode = ERR_IO_MD_DISK;
}
} else
retcode = drbd_request_state(mdev, NS(conn, C_STARTING_SYNC_S));
}
out:
drbd_adm_finish(info, retcode);
return 0;
} }
int drbd_adm_pause_sync(struct sk_buff *skb, struct genl_info *info) int drbd_adm_pause_sync(struct sk_buff *skb, struct genl_info *info)

5
drivers/block/drbd/drbd_state.c
View File

@ -628,6 +628,11 @@ is_valid_conn_transition(enum drbd_conns oc, enum drbd_conns nc)
if (oc == C_STANDALONE && nc != C_UNCONNECTED) if (oc == C_STANDALONE && nc != C_UNCONNECTED)
return SS_NEED_CONNECTION; return SS_NEED_CONNECTION;
/* When establishing a connection we need to go through WF_REPORT_PARAMS!
Necessary to do the right thing upon invalidate-remote on a disconnected resource */
if (oc < C_WF_REPORT_PARAMS && nc >= C_CONNECTED)
return SS_NEED_CONNECTION;
/* After a network error only C_UNCONNECTED or C_DISCONNECTING may follow. */ /* After a network error only C_UNCONNECTED or C_DISCONNECTING may follow. */
if (oc >= C_TIMEOUT && oc <= C_TEAR_DOWN && nc != C_UNCONNECTED && nc != C_DISCONNECTING) if (oc >= C_TIMEOUT && oc <= C_TEAR_DOWN && nc != C_UNCONNECTED && nc != C_DISCONNECTING)
return SS_IN_TRANSIENT_STATE; return SS_IN_TRANSIENT_STATE;