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From 3373d49f32b2bd8149f633727eba453708a9bf9c Mon Sep 17 00:00:00 2001
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From: Song Liu <songliubraving@fb.com>
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Date: Tue, 28 Mar 2017 11:04:44 -0700
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Subject: [RHEL7.5 PATCH 160/169] mdadm/r5cache: allow adding journal to
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array without journal
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Currently, --add-journal can be only used to recreate broken journal
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for arrays with journal since creation. As the kernel code getting
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more mature, this constraint is no longer necessary.
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This patch allows --add-journal to add journal to array without
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journal.
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Signed-off-by: Song Liu <songliubraving@fb.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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Manage.c | 6 ------
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mdadm.8.in | 5 ++---
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2 files changed, 2 insertions(+), 9 deletions(-)
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diff --git a/Manage.c b/Manage.c
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index 04b9398..b82a729 100644
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--- a/Manage.c
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+++ b/Manage.c
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@@ -911,7 +911,6 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
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/* only add journal to array that supports journaling */
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if (dv->disposition == 'j') {
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- struct mdinfo mdi;
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struct mdinfo *mdp;
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mdp = sysfs_read(fd, NULL, GET_ARRAY_STATE);
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@@ -928,11 +927,6 @@ int Manage_add(int fd, int tfd, struct mddev_dev *dv,
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sysfs_free(mdp);
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- tst->ss->getinfo_super(tst, &mdi, NULL);
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- if (mdi.journal_device_required == 0) {
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- pr_err("%s does not support journal device.\n", devname);
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- return -1;
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- }
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disc.raid_disk = 0;
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}
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diff --git a/mdadm.8.in b/mdadm.8.in
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index ecfe9da..461c5de 100644
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--- a/mdadm.8.in
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+++ b/mdadm.8.in
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@@ -1526,9 +1526,8 @@ the device is found or <slot>:missing in case the device is not found.
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.TP
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.BR \-\-add-journal
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-Recreate journal for RAID-4/5/6 array that lost a journal device. In the
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-current implementation, this command cannot add a journal to an array
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-that had a failed journal. To avoid interrupting on-going write opertions,
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+Add journal to an existing array, or recreate journal for RAID-4/5/6 array
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+that lost a journal device. To avoid interrupting on-going write opertions,
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.B \-\-add-journal
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only works for array in Read-Only state.
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--
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2.7.4
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