From c63e31c2cc1ec67372920b5e1aff8204d04dd172 Mon Sep 17 00:00:00 2001 From: David Teigland Date: Thu, 20 Apr 2006 17:03:48 -0400 Subject: [PATCH] [GFS2] journal recovery patch This is one of the changes related to journal recovery I mentioned a couple weeks ago. We can get into a situation where there are only readonly nodes currently mounting the fs, but there are journals that need to be recovered. Since the readonly nodes can't recover journals, the next rw mounter needs to go through and check all journals and recover any that are dirty (i.e. what the first node to mount the fs does). This rw mounter needs to skip the journals held by the existing readonly nodes. Skipping those journals amounts to using the TRY flag on the journal locks so acquiring the lock of a journal held by a readonly node will fail instead of blocking indefinately. Signed-off-by: David Teigland Signed-off-by: Steven Whitehouse --- fs/gfs2/ops_fstype.c | 5 ++--- fs/gfs2/recovery.c | 13 +++++-------- fs/gfs2/recovery.h | 2 +- 3 files changed, 8 insertions(+), 12 deletions(-) diff --git a/fs/gfs2/ops_fstype.c b/fs/gfs2/ops_fstype.c index 4538a1e..70745f3 100644 --- a/fs/gfs2/ops_fstype.c +++ b/fs/gfs2/ops_fstype.c @@ -444,8 +444,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) if (sdp->sd_lockstruct.ls_first) { unsigned int x; for (x = 0; x < sdp->sd_journals; x++) { - error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x), - WAIT); + error = gfs2_recover_journal(gfs2_jdesc_find(sdp, x)); if (error) { fs_err(sdp, "error recovering journal %u: %d\n", x, error); @@ -455,7 +454,7 @@ static int init_journal(struct gfs2_sbd *sdp, int undo) gfs2_lm_others_may_mount(sdp); } else if (!sdp->sd_args.ar_spectator) { - error = gfs2_recover_journal(sdp->sd_jdesc, WAIT); + error = gfs2_recover_journal(sdp->sd_jdesc); if (error) { fs_err(sdp, "error recovering my journal: %d\n", error); goto fail_jinode_gh; diff --git a/fs/gfs2/recovery.c b/fs/gfs2/recovery.c index 68c8561..e91c2bd 100644 --- a/fs/gfs2/recovery.c +++ b/fs/gfs2/recovery.c @@ -418,7 +418,6 @@ static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header *head) /** * gfs2_recover_journal - recovery a given journal * @jd: the struct gfs2_jdesc describing the journal - * @wait: Don't return until the journal is clean (or an error is encountered) * * Acquire the journal's lock, check to see if the journal is clean, and * do recovery if necessary. @@ -426,7 +425,7 @@ static int clean_journal(struct gfs2_jdesc *jd, struct gfs2_log_header *head) * Returns: errno */ -int gfs2_recover_journal(struct gfs2_jdesc *jd, int wait) +int gfs2_recover_journal(struct gfs2_jdesc *jd) { struct gfs2_inode *ip = jd->jd_inode->u.generic_ip; struct gfs2_sbd *sdp = ip->i_sbd; @@ -441,12 +440,10 @@ int gfs2_recover_journal(struct gfs2_jdesc *jd, int wait) /* Aquire the journal lock so we can do recovery */ - error = gfs2_glock_nq_num(sdp, - jd->jd_jid, &gfs2_journal_glops, + error = gfs2_glock_nq_num(sdp, jd->jd_jid, &gfs2_journal_glops, LM_ST_EXCLUSIVE, - LM_FLAG_NOEXP | - ((wait) ? 0 : LM_FLAG_TRY) | - GL_NOCACHE, &j_gh); + LM_FLAG_NOEXP | LM_FLAG_TRY | GL_NOCACHE, + &j_gh); switch (error) { case 0: break; @@ -574,7 +571,7 @@ void gfs2_check_journals(struct gfs2_sbd *sdp) break; if (jd != sdp->sd_jdesc) - gfs2_recover_journal(jd, NO_WAIT); + gfs2_recover_journal(jd); } } diff --git a/fs/gfs2/recovery.h b/fs/gfs2/recovery.h index 50d7eb57..2484811 100644 --- a/fs/gfs2/recovery.h +++ b/fs/gfs2/recovery.h @@ -25,7 +25,7 @@ void gfs2_revoke_clean(struct gfs2_sbd *sdp); int gfs2_find_jhead(struct gfs2_jdesc *jd, struct gfs2_log_header *head); -int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd, int wait); +int gfs2_recover_journal(struct gfs2_jdesc *gfs2_jd); void gfs2_check_journals(struct gfs2_sbd *sdp); #endif /* __RECOVERY_DOT_H__ */ -- 2.7.4