[PATCH] mkfs.xfs.8: Clarify mkfs vs. mount block size limits.

[PATCH] mkfs.xfs.8: Clarify mkfs vs. mount block size limits.

[Eric Sandeen]

The current explanation is a bit vague to the uninitiated;
clarify the text to make it obvious that while the mkfs.xfs
utility is able to create valid filesystems with block sizes
up to 65536, the Linux kernel can only mount filesystems with
page sized or smaller blocks.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
---

diff --git a/man/man8/mkfs.xfs.8 b/man/man8/mkfs.xfs.8
index 1fe510b..980c7bc 100644
--- a/man/man8/mkfs.xfs.8
+++ b/man/man8/mkfs.xfs.8
@@ -126,7 +126,10 @@ or in bytes with
 .BR size= .
 The default value is 4096 bytes (4 KiB), the minimum is 512, and the
 maximum is 65536 (64 KiB).
-XFS on Linux currently only supports pagesize or smaller blocks.
+Although
+.B mkfs.xfs
+will accept any of these values and create a valid filesystem,
+XFS on Linux can only mount filesystems with pagesize or smaller blocks.
 .TP
 .BI \-m " global_metadata_options"
 These options specify metadata format options that either apply to the entire

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Re: [PATCH] mkfs.xfs.8: Clarify mkfs vs. mount block size limits.

[Brian Foster]

On Wed, Jan 20, 2016 at 06:07:32PM -0600, Eric Sandeen wrote:
> The current explanation is a bit vague to the uninitiated;
> clarify the text to make it obvious that while the mkfs.xfs
> utility is able to create valid filesystems with block sizes
> up to 65536, the Linux kernel can only mount filesystems with
> page sized or smaller blocks.
> 
> Signed-off-by: Eric Sandeen <sandeen@redhat.com>
> ---

Reviewed-by: Brian Foster <bfoster@redhat.com>

> 
> diff --git a/man/man8/mkfs.xfs.8 b/man/man8/mkfs.xfs.8
> index 1fe510b..980c7bc 100644
> --- a/man/man8/mkfs.xfs.8
> +++ b/man/man8/mkfs.xfs.8
> @@ -126,7 +126,10 @@ or in bytes with
>  .BR size= .
>  The default value is 4096 bytes (4 KiB), the minimum is 512, and the
>  maximum is 65536 (64 KiB).
> -XFS on Linux currently only supports pagesize or smaller blocks.
> +Although
> +.B mkfs.xfs
> +will accept any of these values and create a valid filesystem,
> +XFS on Linux can only mount filesystems with pagesize or smaller blocks.
>  .TP
>  .BI \-m " global_metadata_options"
>  These options specify metadata format options that either apply to the entire
> 
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> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs

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