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From: mbroz@sourceware.org To: lvm-devel@redhat.com, lvm2-cvs@sourceware.org Subject: LVM2 ./WHATS_NEW lib/mirror/mirrored.c Date: Wed, 18 Nov 2009 16:48:00 -0000 [thread overview] Message-ID: <20091118164811.30581.qmail@sourceware.org> (raw) CVSROOT: /cvs/lvm2 Module name: LVM2 Changes by: mbroz@sourceware.org 2009-11-18 16:48:10 Modified files: . : WHATS_NEW lib/mirror : mirrored.c Log message: Fix pvmove region_size overflow for very large PVs. Fixes problem reported in https://www.redhat.com/archives/dm-devel/2009-November/msg00104.html The region size multiplication can overflow when using 32bit integer. Patches: http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/WHATS_NEW.diff?cvsroot=lvm2&r1=1.1314&r2=1.1315 http://sourceware.org/cgi-bin/cvsweb.cgi/LVM2/lib/mirror/mirrored.c.diff?cvsroot=lvm2&r1=1.64&r2=1.65 --- LVM2/WHATS_NEW 2009/11/04 14:47:27 1.1314 +++ LVM2/WHATS_NEW 2009/11/18 16:48:10 1.1315 @@ -1,5 +1,6 @@ Version 2.02.55 - =================================== + Fix pvmove region_size oveflow for very large PVs. Fix lvcreate and lvresize processing of %PVS argument. Tidy some uses of arg_count and introduce arg_is_set. Export outnl and indent functions for modules. --- LVM2/lib/mirror/mirrored.c 2009/10/01 00:35:30 1.64 +++ LVM2/lib/mirror/mirrored.c 2009/11/18 16:48:10 1.65 @@ -290,7 +290,7 @@ uint32_t area_count = seg->area_count; unsigned start_area = 0u; int mirror_status = MIRR_RUNNING; - uint32_t region_size, region_max; + uint32_t region_size; int r; if (!*target_state) @@ -333,18 +333,11 @@ return 0; } region_size = seg->region_size; - } else { - /* Find largest power of 2 region size unit we can use */ - region_max = (1 << (ffs((int)seg->area_len) - 1)) * - seg->lv->vg->extent_size; - - region_size = mirr_state->default_region_size; - if (region_max < region_size) { - region_size = region_max; - log_verbose("Using reduced mirror region size of %u sectors", - region_size); - } - } + + } else + region_size = adjusted_mirror_region_size(seg->lv->vg->extent_size, + seg->area_len, + mirr_state->default_region_size); if (!dm_tree_node_add_mirror_target(node, len)) return_0;
next reply other threads:[~2009-11-18 16:48 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-11-18 16:48 mbroz [this message] -- strict thread matches above, loose matches on Subject: below -- 2012-02-23 22:30 zkabelac 2012-02-13 11:07 zkabelac 2011-06-17 14:17 zkabelac 2010-12-01 13:01 zkabelac 2010-05-24 16:30 agk 2008-07-31 14:43 agk 2008-01-16 15:24 agk 2006-05-11 19:47 agk 2005-10-26 16:12 agk 2005-09-02 16:59 agk
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