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From 7e8275f8939988f18f9a4a596381ca215fde2270 Mon Sep 17 00:00:00 2001
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From: Eric Sandeen <sandeen@redhat.com>
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Date: Mon, 4 Nov 2019 15:35:49 -0500
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Subject: [PATCH] xfs_growfs: allow mounted device node as argument
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Up until:
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b97815a0 xfs_growfs: ensure target path is an active xfs mountpoint
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xfs_growfs actually accepted a mounted block device name as the
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primary argument, because it could be found in the mount table.
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It turns out that Ansible was making use of this undocumented behavior,
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and it's trivial to allow it, so put it back in place and document
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it this time.
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Signed-off-by: Eric Sandeen <sandeen@redhat.com>
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Reviewed-by: Christoph Hellwig <hch@lst.de>
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Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
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---
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growfs/xfs_growfs.c | 3 +++
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man/man8/xfs_growfs.8 | 10 +++++++++-
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2 files changed, 12 insertions(+), 1 deletion(-)
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diff --git a/growfs/xfs_growfs.c b/growfs/xfs_growfs.c
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index eab15984..6c62833b 100644
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--- a/growfs/xfs_growfs.c
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+++ b/growfs/xfs_growfs.c
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@@ -141,6 +141,9 @@ main(int argc, char **argv)
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}
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fs = fs_table_lookup_mount(rpath);
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+ if (!fs)
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+ fs = fs_table_lookup_blkdev(rpath);
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+
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if (!fs) {
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fprintf(stderr, _("%s: %s is not a mounted XFS filesystem\n"),
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progname, argv[optind]);
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diff --git a/man/man8/xfs_growfs.8 b/man/man8/xfs_growfs.8
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index 7e6a387c..60a88189 100644
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--- a/man/man8/xfs_growfs.8
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+++ b/man/man8/xfs_growfs.8
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@@ -35,7 +35,12 @@ xfs_growfs \- expand an XFS filesystem
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.B \-R
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.I size
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]
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+[
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.I mount-point
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+|
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+.I block-device
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+]
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+
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.br
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.B xfs_growfs \-V
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.SH DESCRIPTION
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@@ -45,7 +50,10 @@ expands an existing XFS filesystem (see
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The
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.I mount-point
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argument is the pathname of the directory where the filesystem
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-is mounted. The filesystem must be mounted to be grown (see
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+is mounted. The
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+.I block-device
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+argument is the device name of a mounted XFS filesystem.
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+The filesystem must be mounted to be grown (see
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.BR mount (8)).
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The existing contents of the filesystem are undisturbed, and the added space
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becomes available for additional file storage.
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--
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2.17.0
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