xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ocfs2/cluster: Pin/unpin o2hb regions

Browse Source 
This patch adds support for pinning o2hb regions in configfs. Pinning disallows
a region to be cleanly stopped as long as it has an active dependent user
(read o2dlm).

In local heartbeat mode, the region uuid matching the domain name is pinned as
long as the o2dlm domain is active.

In global heartbeat mode, all regions are pinned as long as there is atleast
one dependent user and the region count is 3 or less. All regions are unpinned
if the number of dependent users is zero or region count is greater than 3.

Signed-off-by: Sunil Mushran <sunil.mushran@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>
This commit is contained in:
Sunil Mushran
2010-12-14 14:14:29 -08:00
committed by Joel Becker
parent ffee223a9a
commit 58a3158a5d
2 changed files with 191 additions and 51 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
fs/ocfs2/dlm/dlmdomain.c
View File

@@ -1659,8 +1659,8 @@ bail:
static void dlm_unregister_domain_handlers(struct dlm_ctxt *dlm)
{
o2hb_unregister_callback(NULL, &dlm->dlm_hb_up);
o2hb_unregister_callback(NULL, &dlm->dlm_hb_down);
o2hb_unregister_callback(dlm->name, &dlm->dlm_hb_up);
o2hb_unregister_callback(dlm->name, &dlm->dlm_hb_down);
o2net_unregister_handler_list(&dlm->dlm_domain_handlers);
}
@@ -1672,13 +1672,13 @@ static int dlm_register_domain_handlers(struct dlm_ctxt *dlm)
o2hb_setup_callback(&dlm->dlm_hb_down, O2HB_NODE_DOWN_CB,
dlm_hb_node_down_cb, dlm, DLM_HB_NODE_DOWN_PRI);
status = o2hb_register_callback(NULL, &dlm->dlm_hb_down);
status = o2hb_register_callback(dlm->name, &dlm->dlm_hb_down);
if (status)
goto bail;
o2hb_setup_callback(&dlm->dlm_hb_up, O2HB_NODE_UP_CB,
dlm_hb_node_up_cb, dlm, DLM_HB_NODE_UP_PRI);
status = o2hb_register_callback(NULL, &dlm->dlm_hb_up);
status = o2hb_register_callback(dlm->name, &dlm->dlm_hb_up);
if (status)
goto bail;