[PATCH] g_lock: open with LOCK_ORDER_3
Jeremy Allison
jra at samba.org
Wed Jun 14 17:21:29 UTC 2017
On Wed, Jun 14, 2017 at 05:51:42PM +0200, Volker Lendecke via samba-technical wrote:
> Hi!
>
> IIRC this has been discussed here already: This fixes an xattr_tdb
> cluster failure.
>
> Review appreciated!
Yep I remember. RB+. Pushed.
> SerNet GmbH, Bahnhofsallee 1b, 37081 Göttingen
> phone: +49-551-370000-0, fax: +49-551-370000-9
> AG Göttingen, HRB 2816, GF: Dr. Johannes Loxen
> http://www.sernet.de, mailto:kontakt at sernet.de
> From 3e76b185580b0aaef2c13206273243ab36512c48 Mon Sep 17 00:00:00 2001
> From: Volker Lendecke <vl at samba.org>
> Date: Wed, 14 Jun 2017 13:57:56 +0200
> Subject: [PATCH] g_lock: open with LOCK_ORDER_3
>
> xattr_tdb needs g_lock in a clustered environment. Nobody else
> uses LOCK_ORDER_3 at this moment, so this looks safe.
>
> The last one to use this was dbwrap_watch.tdb, and that's gone. The only
> other one was notify_index.tdb, and that's gone too.
>
> Signed-off-by: Volker Lendecke <vl at samba.org>
> ---
> source3/lib/g_lock.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/source3/lib/g_lock.c b/source3/lib/g_lock.c
> index 1815796..e8e6b17 100644
> --- a/source3/lib/g_lock.c
> +++ b/source3/lib/g_lock.c
> @@ -67,7 +67,7 @@ struct g_lock_ctx *g_lock_ctx_init(TALLOC_CTX *mem_ctx,
> backend = db_open(result, db_path, 0,
> TDB_CLEAR_IF_FIRST|TDB_INCOMPATIBLE_HASH,
> O_RDWR|O_CREAT, 0600,
> - DBWRAP_LOCK_ORDER_2,
> + DBWRAP_LOCK_ORDER_3,
> DBWRAP_FLAG_NONE);
> TALLOC_FREE(db_path);
> if (backend == NULL) {
> --
> 2.1.4
>
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