52 lines
1.8 KiB
Diff
52 lines
1.8 KiB
Diff
From 1e02682bf6204656f37e7c0d30aef29c6a246cb2 Mon Sep 17 00:00:00 2001
|
|
From: John Garry <john.g.garry@oracle.com>
|
|
Date: Fri, 1 Mar 2024 17:15:22 +0000
|
|
Subject: [PATCH 09/11] xfs_io: Implement lsattr and chattr support for atomic
|
|
writes
|
|
|
|
Use something like the following:
|
|
xfs_io -c "chattr +W" mnt/file
|
|
|
|
forcealign must be aliged for the file.
|
|
|
|
Signed-off-by: John Garry <john.g.garry@oracle.com>
|
|
---
|
|
io/attr.c | 5 ++++-
|
|
1 file changed, 4 insertions(+), 1 deletion(-)
|
|
|
|
diff --git a/io/attr.c b/io/attr.c
|
|
index 248a9c2..bc27a1a 100644
|
|
--- a/io/attr.c
|
|
+++ b/io/attr.c
|
|
@@ -39,9 +39,10 @@ static struct xflags {
|
|
{ FS_XFLAG_COWEXTSIZE, "C", "cowextsize" },
|
|
{ FS_XFLAG_HASATTR, "X", "has-xattr" },
|
|
{ FS_XFLAG_FORCEALIGN, "F", "force-align" },
|
|
+ { FS_XFLAG_ATOMICWRITES, "W", "atomic-writes" },
|
|
{ 0, NULL, NULL }
|
|
};
|
|
-#define CHATTR_XFLAG_LIST "r"/*p*/"iasAdtPneEfSxC"/*X*/"F"
|
|
+#define CHATTR_XFLAG_LIST "r"/*p*/"iasAdtPneEfSxC"/*X*/"FW"
|
|
|
|
static void
|
|
lsattr_help(void)
|
|
@@ -69,6 +70,7 @@ lsattr_help(void)
|
|
" C -- for files with shared blocks, observe the inode CoW extent size value\n"
|
|
" X -- file has extended attributes (cannot be changed using chattr)\n"
|
|
" F -- data extent mappings must be aligned to extent size hint\n"
|
|
+" W -- atomic writes enabled for a file\n"
|
|
"\n"
|
|
" Options:\n"
|
|
" -R -- recursively descend (useful when current file is a directory)\n"
|
|
@@ -107,6 +109,7 @@ chattr_help(void)
|
|
" +/-x -- set/clear the direct access (DAX) flag\n"
|
|
" +/-C -- set/clear the CoW extent-size flag\n"
|
|
" +/-F -- set/clear the forcealign flag\n"
|
|
+" +/-W -- set/clear the atomic writes flag\n"
|
|
" Note1: user must have certain capabilities to modify immutable/append-only.\n"
|
|
" Note2: immutable/append-only files cannot be deleted; removing these files\n"
|
|
" requires the immutable/append-only flag to be cleared first.\n"
|
|
--
|
|
2.33.0
|
|
|