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authorDavid Teigland <teigland@redhat.com>2012-04-27 00:54:29 +0400
committerDavid Teigland <teigland@redhat.com>2012-05-02 23:15:27 +0400
commit4875647a08e35f77274838d97ca8fa44158d50e2 (patch)
treebf8a39eaf3219af5d661ed3e347545306fd84bda /fs/gfs2
parent6d40c4a708e0e996fd9c60d4093aebba5fe1f749 (diff)
downloadlinux-4875647a08e35f77274838d97ca8fa44158d50e2.tar.xz
dlm: fixes for nodir mode
The "nodir" mode (statically assign master nodes instead of using the resource directory) has always been highly experimental, and never seriously used. This commit fixes a number of problems, making nodir much more usable. - Major change to recovery: recover all locks and restart all in-progress operations after recovery. In some cases it's not possible to know which in-progess locks to recover, so recover all. (Most require recovery in nodir mode anyway since rehashing changes most master nodes.) - Change the way nodir mode is enabled, from a command line mount arg passed through gfs2, into a sysfs file managed by dlm_controld, consistent with the other config settings. - Allow recovering MSTCPY locks on an rsb that has not yet been turned into a master copy. - Ignore RCOM_LOCK and RCOM_LOCK_REPLY recovery messages from a previous, aborted recovery cycle. Base this on the local recovery status not being in the state where any nodes should be sending LOCK messages for the current recovery cycle. - Hold rsb lock around dlm_purge_mstcpy_locks() because it may run concurrently with dlm_recover_master_copy(). - Maintain highbast on process-copy lkb's (in addition to the master as is usual), because the lkb can switch back and forth between being a master and being a process copy as the master node changes in recovery. - When recovering MSTCPY locks, flag rsb's that have non-empty convert or waiting queues for granting at the end of recovery. (Rename flag from LOCKS_PURGED to RECOVER_GRANT and similar for the recovery function, because it's not only resources with purged locks that need grant a grant attempt.) - Replace a couple of unnecessary assertion panics with error messages. Signed-off-by: David Teigland <teigland@redhat.com>
Diffstat (limited to 'fs/gfs2')
-rw-r--r--fs/gfs2/incore.h1
-rw-r--r--fs/gfs2/lock_dlm.c2
-rw-r--r--fs/gfs2/ops_fstype.c7
3 files changed, 1 insertions, 9 deletions
diff --git a/fs/gfs2/incore.h b/fs/gfs2/incore.h
index 47d0bda5ac2b..c7975bf4fd43 100644
--- a/fs/gfs2/incore.h
+++ b/fs/gfs2/incore.h
@@ -556,7 +556,6 @@ struct gfs2_sb_host {
struct lm_lockstruct {
int ls_jid;
unsigned int ls_first;
- unsigned int ls_nodir;
const struct lm_lockops *ls_ops;
dlm_lockspace_t *ls_dlm;
diff --git a/fs/gfs2/lock_dlm.c b/fs/gfs2/lock_dlm.c
index 5f5e70e047dc..4a38db739ca0 100644
--- a/fs/gfs2/lock_dlm.c
+++ b/fs/gfs2/lock_dlm.c
@@ -1209,8 +1209,6 @@ static int gdlm_mount(struct gfs2_sbd *sdp, const char *table)
fsname++;
flags = DLM_LSFL_FS | DLM_LSFL_NEWEXCL;
- if (ls->ls_nodir)
- flags |= DLM_LSFL_NODIR;
/*
* create/join lockspace
diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c
index 6f3a18f9e176..018b4c13db92 100644
--- a/fs/gfs2/ops_fstype.c
+++ b/fs/gfs2/ops_fstype.c
@@ -994,6 +994,7 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
ls->ls_jid = option;
break;
case Opt_id:
+ case Opt_nodir:
/* Obsolete, but left for backward compat purposes */
break;
case Opt_first:
@@ -1002,12 +1003,6 @@ static int gfs2_lm_mount(struct gfs2_sbd *sdp, int silent)
goto hostdata_error;
ls->ls_first = option;
break;
- case Opt_nodir:
- ret = match_int(&tmp[0], &option);
- if (ret || (option != 0 && option != 1))
- goto hostdata_error;
- ls->ls_nodir = option;
- break;
case Opt_err:
default:
hostdata_error: