Subject: + ocfs2-add-dlm-recovery-callbacks.patch added to -mm tree To: rgoldwyn@xxxxxxx,jlbec@xxxxxxxxxxxx,mfasheh@xxxxxxx,rgoldwyn@xxxxxxxx From: akpm@xxxxxxxxxxxxxxxxxxxx Date: Tue, 10 Dec 2013 14:43:16 -0800 The patch titled Subject: ocfs2: add DLM recovery callbacks has been added to the -mm tree. Its filename is ocfs2-add-dlm-recovery-callbacks.patch This patch should soon appear at http://ozlabs.org/~akpm/mmots/broken-out/ocfs2-add-dlm-recovery-callbacks.patch and later at http://ozlabs.org/~akpm/mmotm/broken-out/ocfs2-add-dlm-recovery-callbacks.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** The -mm tree is included into linux-next and is updated there every 3-4 working days ------------------------------------------------------ From: Goldwyn Rodrigues <rgoldwyn@xxxxxxx> Subject: ocfs2: add DLM recovery callbacks These are the callbacks called by the fs/dlm code in case the membership changes. If there is a failure while/during calling any of these, the DLM creates a new membership and relays to the rest of the nodes. recover_prep() is called when DLM understands a node is down. recover_slot() is called once all nodes have acknowledged recover_prep and recovery can begin. recover_done() is called once the recovery is complete. It returns the new membership. Signed-off-by: Goldwyn Rodrigues <rgoldwyn@xxxxxxxx> Reviewed-by: Mark Fasheh <mfasheh@xxxxxxx> Cc: Joel Becker <jlbec@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- fs/ocfs2/stack_user.c | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff -puN fs/ocfs2/stack_user.c~ocfs2-add-dlm-recovery-callbacks fs/ocfs2/stack_user.c --- a/fs/ocfs2/stack_user.c~ocfs2-add-dlm-recovery-callbacks +++ a/fs/ocfs2/stack_user.c @@ -110,6 +110,8 @@ struct ocfs2_live_connection { struct list_head oc_list; struct ocfs2_cluster_connection *oc_conn; + atomic_t oc_this_node; + int oc_our_slot; }; struct ocfs2_control_private { @@ -799,6 +801,42 @@ static int fs_protocol_compare(struct oc return 0; } +static void user_recover_prep(void *arg) +{ +} + +static void user_recover_slot(void *arg, struct dlm_slot *slot) +{ + struct ocfs2_cluster_connection *conn = arg; + printk(KERN_INFO "ocfs2: Node %d/%d down. Initiating recovery.\n", + slot->nodeid, slot->slot); + conn->cc_recovery_handler(slot->nodeid, conn->cc_recovery_data); + +} + +static void user_recover_done(void *arg, struct dlm_slot *slots, + int num_slots, int our_slot, + uint32_t generation) +{ + struct ocfs2_cluster_connection *conn = arg; + struct ocfs2_live_connection *lc = conn->cc_private; + int i; + + for (i = 0; i < num_slots; i++) + if (slots[i].slot == our_slot) { + atomic_set(&lc->oc_this_node, slots[i].nodeid); + break; + } + + lc->oc_our_slot = our_slot; +} + +const struct dlm_lockspace_ops ocfs2_ls_ops = { + .recover_prep = user_recover_prep, + .recover_slot = user_recover_slot, + .recover_done = user_recover_done, +}; + static int user_cluster_connect(struct ocfs2_cluster_connection *conn) { dlm_lockspace_t *fsdlm; _ Patches currently in -mm which might be from rgoldwyn@xxxxxxx are ocfs2-remove-versioning-information.patch ocfs2-add-clustername-to-cluster-connection.patch ocfs2-add-dlm-recovery-callbacks.patch ocfs2-shift-allocation-ocfs2_live_connection-to-user_connect.patch ocfs2-pass-ocfs2_cluster_connection-to-ocfs2_this_node.patch ocfs2-framework-for-version-lvb.patch ocfs2-use-the-new-dlm-operation-callbacks-while-requesting-new-lockspace.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html