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SUSE:SLE-12-SP4:GA
mdadm.7129
0006-Grow-Add-documentation-to-abort_reshape-fo...
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File 0006-Grow-Add-documentation-to-abort_reshape-for-suspend_.patch of Package mdadm.7129
From bf08f6b1efed94b80c4cfb433db7202b6b7f794c Mon Sep 17 00:00:00 2001 From: Jes Sorensen <Jes.Sorensen@redhat.com> Date: Mon, 22 Feb 2016 09:43:43 -0500 Subject: [PATCH 227/359] Grow: Add documentation to abort_reshape() for suspend_{lo,hi} setting References: bsc#1081910 Add documentation for quirky reset procedure for resetting suspended region range. Suggested-by: NeilBrown <neilb@suse.com> Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Coly Li <colyli@suse.de> --- Grow.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/Grow.c b/Grow.c index bbdd46c..c4f417e 100755 --- a/Grow.c +++ b/Grow.c @@ -740,6 +740,14 @@ int start_reshape(struct mdinfo *sra, int already_running, void abort_reshape(struct mdinfo *sra) { sysfs_set_str(sra, NULL, "sync_action", "idle"); + /* + * Prior to kernel commit: 23ddff3792f6 ("md: allow suspend_lo and + * suspend_hi to decrease as well as increase.") + * you could only increase suspend_{lo,hi} unless the region they + * covered was empty. So to reset to 0, you need to push suspend_lo + * up past suspend_hi first. So to maximize the chance of mdadm + * working on all kernels, we want to keep doing that. + */ sysfs_set_num(sra, NULL, "suspend_lo", 0x7FFFFFFFFFFFFFFFULL); sysfs_set_num(sra, NULL, "suspend_hi", 0); sysfs_set_num(sra, NULL, "suspend_lo", 0); -- 2.16.1
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