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commit ae565c82568a8b8068c225d8534c68c9989ccbe3
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87834d |
Author: Andrew Price <anprice@redhat.com>
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Date: Tue Mar 28 21:32:42 2017 +0100
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87834d |
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gfs2_grow: Disable rgrp alignment when dev topology is unsuitable
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87834d |
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If optimal_io_size is not a multiple of minimum_io_size then the values
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87834d |
are not reliable swidth and sunit values, so disable rgrp stripe
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alignment in that case.
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Resolves: rhbz#1436772
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Signed-off-by: Andrew Price <anprice@redhat.com>
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diff --git a/gfs2/mkfs/main_grow.c b/gfs2/mkfs/main_grow.c
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index 173466c..66ba057 100644
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--- a/gfs2/mkfs/main_grow.c
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+++ b/gfs2/mkfs/main_grow.c
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@@ -169,8 +169,12 @@ static lgfs2_rgrps_t rgrps_init(struct gfs2_sbd *sdp)
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unsigned long min_io_sz = blkid_topology_get_minimum_io_size(tp);
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unsigned long opt_io_sz = blkid_topology_get_optimal_io_size(tp);
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unsigned long phy_sector_sz = blkid_topology_get_physical_sector_size(tp);
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+ /* If optimal_io_size is not a multiple of minimum_io_size then
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87834d |
+ the values are not reliable swidth and sunit values, so don't
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+ attempt rgrp alignment */
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if ((min_io_sz > phy_sector_sz) &&
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- (opt_io_sz > phy_sector_sz)) {
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+ (opt_io_sz > phy_sector_sz) &&
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+ (opt_io_sz % min_io_sz == 0)) {
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al_base = opt_io_sz / sdp->bsize;
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al_off = min_io_sz / sdp->bsize;
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}
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