[LTP] [PATCH] inode01: Configure 4KB cluster size on exfat to prevent ENOSPC

[LTP] [PATCH] inode01: Configure 4KB cluster size on exfat to prevent ENOSPC

[Kinshu Agrawal (xWF) via ltp]

In the multi-process scenario, inode01 creates 10,920 objects (files
and directories) across 5 parallel workers.

On Android, mkfs.exfat (exfatprogs) defaults to a 128KB cluster size
on volumes <= 32GB. On a 512MB test volume, this provides only 4,080
clusters, causing the test to run out of clusters and fail with ENOSPC.

Fix this by configuring exfat to format with a 4KB cluster size (-c 4K)
via the struct tst_fs mkfs_opts field.

Signed-off-by: Kinshu Agrawal <kinshu@google.com>
---
 testcases/kernel/fs/inode/inode01.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/testcases/kernel/fs/inode/inode01.c
b/testcases/kernel/fs/inode/inode01.c
index d41ff2c62..7fccaaf95 100644
--- a/testcases/kernel/fs/inode/inode01.c
+++ b/testcases/kernel/fs/inode/inode01.c
@@ -255,6 +255,10 @@ static struct tst_test test = {
  .mntpoint = MNTPOINT,
  .mount_device = 1,
  .all_filesystems = 1,
+ .filesystems = (struct tst_fs[]) {
+ {.type = "exfat", .mkfs_opts = (const char *const[]) {"-c", "4K", NULL}},
+ {}
+ },
  .needs_root = 1,
  .dev_min_size = 512,
  .forks_child = 1,
--

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Re: [LTP] [PATCH] inode01: Configure 4KB cluster size on exfat to prevent ENOSPC

[Andrea Cervesato via ltp]

Hi Kinshu,

this patch doesn't apply, please send a v2.

Regards,
--
Andrea Cervesato
SUSE QE Automation Engineer Linux
andrea.cervesato@suse.com

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Re: [LTP] [PATCH] inode01: Configure 4KB cluster size on exfat to prevent ENOSPC

[Kinshu Agrawal (xWF) via ltp]

Hi Andrea, Thanks for reviewing!

To avoid email whitespace and formatting issues, I opened a GitHub Pull
Request with the clean patch and updated description here:
https://github.com/linux-test-project/ltp/pull/1340

Avinesh already reviewed the approach on the PR, and the commit description
has been updated with the 32KB cluster size details. Please feel free to
take a look there!

Thanks & Regards,
Kinshu Agrawal

On Wed, Aug 19, 2026 at 1:37 PM Andrea Cervesato <andrea.cervesato@suse.com>
wrote:

> Hi Kinshu,
>
> this patch doesn't apply, please send a v2.
>
> Regards,
> --
> Andrea Cervesato
> SUSE QE Automation Engineer Linux
> andrea.cervesato@suse.com
>

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