From: Daan De Meyer <daan.j.demeyer@gmail.com>
Date: Fri, 21 Jul 2023 12:21:44 +0000 (+0200)
Subject: xfs: Bump minimal size to 300M
X-Git-Tag: v254-rc3~9^2~1
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=ce8b4261eb2cdbfb1be6a1d385b8f121a346f014;p=thirdparty%2Fsystemd.git

xfs: Bump minimal size to 300M

From the xfsprogs source code:

* We don't support filesystems smaller than 300MB anymore.  Tiny
* filesystems have never been XFS' design target.  This limit has been
* carefully calculated to prevent formatting with a log smaller than
* the "realistic" size.
*
* If the realistic log size is 64MB, there are four AGs, and the log
* AG should be at least 1/8 free after formatting, this gives us:
*
* 64MB * (8 / 7) * 4 = 293MB

So let's accommodate and bump the minimal XFS filesystem size to 300M.
---

diff --git a/src/shared/resize-fs.h b/src/shared/resize-fs.h
index ac185d180b0..b40943c9921 100644
--- a/src/shared/resize-fs.h
+++ b/src/shared/resize-fs.h
@@ -8,7 +8,7 @@
 int resize_fs(int fd, uint64_t sz, uint64_t *ret_size);
 
 #define BTRFS_MINIMAL_SIZE (256U*1024U*1024U)
-#define XFS_MINIMAL_SIZE (16U*1024U*1024U)
+#define XFS_MINIMAL_SIZE (300U*1024U*1024U)
 #define EXT4_MINIMAL_SIZE (1024U*1024U)
 
 uint64_t minimal_size_by_fs_magic(statfs_f_type_t magic);