[PATCH 2/2] src/attr_replace_test: dynamically adjust the max xattr size

Luís Henriques
2022-06-07T15:14:38Z

CephFS doesn't had a maximum xattr size. Instead, it imposes a maximum
size for the full set of an inode's xattrs names+values, which by default
is 64K but it can be changed by a cluster admin.

Test generic/486 started to fail after fixing a ceph bug where this limit
wasn't being imposed. Adjust dynamically the size of the xattr being set
if the error returned is -ENOSPC.

Signed-off-by: Luís Henriques <lhenriques@suse.de>
---
src/attr_replace_test.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/attr_replace_test.c b/src/attr_replace_test.c
index cca8dcf8ff60..de18e643f469 100644
--- a/src/attr_replace_test.c
+++ b/src/attr_replace_test.c
@@ -62,7 +62,10 @@ int main(int argc, char *argv[])

/* Then, replace it with bigger one, forcing short form to leaf conversion. */
memset(value, '1', size);
- ret = fsetxattr(fd, name, value, size, XATTR_REPLACE);
+ do {
+ ret = fsetxattr(fd, name, value, size, XATTR_REPLACE);
+ size -= 256;
+ } while ((ret < 0) && (errno == ENOSPC) && (size > 0));
if (ret < 0) die();
close(fd);