From 33bd5995b02e475bac2cc60e6e2273b23b88dc34 Mon Sep 17 00:00:00 2001 From: Yann Ylavic Date: Sun, 20 May 2018 13:08:13 +0000 Subject: mod_proxy_balancer: clear slotmem slots' inuse flags from persisted files. Otherwise, when BalancerPersist is enabled, we might fail (re)starting with a saved slotmem if a BalancerMember was renamed (e.g. PR 62308's port change). This is because the renamed member is considered a new one, while the old name still reserves a slot, so we end up missing one room. The overall number of members does not change so the sizes check succeeds thus the persisted slotmem is not invalidated. Yet the slomem is not really compatible. By clearing inuse flags, we still allow for slots to be reused if their index did not change (thanks to ap_proxy_find_balancershm() and slotmem_fgrab() at the given index), but will also invalidate renamed slots which don't match the index. We now have the correct behaviour by slot and the server (re)starts in any case. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1831938 13f79535-47bb-0310-9956-ffa450edef68 --- modules/proxy/mod_proxy_balancer.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'modules/proxy/mod_proxy_balancer.c') diff --git a/modules/proxy/mod_proxy_balancer.c b/modules/proxy/mod_proxy_balancer.c index 42fd97b125..347481a323 100644 --- a/modules/proxy/mod_proxy_balancer.c +++ b/modules/proxy/mod_proxy_balancer.c @@ -908,7 +908,7 @@ static int balancer_post_config(apr_pool_t *pconf, apr_pool_t *plog, continue; } if (conf->bal_persist) { - type = AP_SLOTMEM_TYPE_PERSIST; + type = AP_SLOTMEM_TYPE_PERSIST | AP_SLOTMEM_TYPE_CLEARINUSE; } else { type = 0; } -- cgit v1.2.3