linux-kernel - [PATCH 0/4] pNFS: Fix layoutcommit handling in block/scsi driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250630183537.196479-1-sergeybashirov@gmail.com>
Date: Mon, 30 Jun 2025 21:35:25 +0300
From: Sergey Bashirov <sergeybashirov@...il.com>
To: Christoph Hellwig <hch@...radead.org>,
	Trond Myklebust <trondmy@...nel.org>,
	Anna Schumaker <anna@...nel.org>
Cc: linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Konstantin Evtushenko <koevtushenko@...dex.com>,
	Sergey Bashirov <sergeybashirov@...il.com>
Subject: [PATCH 0/4] pNFS: Fix layoutcommit handling in block/scsi driver

Depending on the allocation scheme and size, some files may have a large
number of extents. This series fixes the handling of large extent arrays
and allows the pNFS client to split large layoutcommits that exceed the
maximum RPC size accepted by the server into multiple requests.

Manually tested for the block layout driver:
sudo mount.nfs4 -v -o minorversion=2,sync,hard,noatime,  \
                      rsize=16384,wsize=16384,timeo=600, \
                      retrans=2 192.168.1.1:/mnt/export /mnt/pnfs
sudo fio --name=test --filename=/mnt/pnfs/test6.raw --size=10M \
         --rw=randwrite --ioengine=libaio --direct=1 --bs=4k   \
         --iodepth=128 --fallocate=none --verify=sha1
Trace:
    fio-1580  [012]  1258.595866: bl_ext_tree_prepare_commit:
        ret=-28, found 372 ranges, lwb=1531903, not all ranges encoded
    fio-1580  [012]  1258.609534: bl_ext_tree_prepare_commit:
        ret=-28, found 372 ranges, lwb=3104767, not all ranges encoded
    fio-1580  [012]  1258.655556: bl_ext_tree_prepare_commit:
        ret=-28, found 372 ranges, lwb=4644863, not all ranges encoded
    fio-1580  [012]  1258.699603: bl_ext_tree_prepare_commit:
        ret=-28, found 372 ranges, lwb=6176767, not all ranges encoded
    fio-1580  [012]  1258.743650: bl_ext_tree_prepare_commit:
        ret=-28, found 372 ranges, lwb=7708671, not all ranges encoded
    fio-1580  [012]  1258.787605: bl_ext_tree_prepare_commit:
        ret=-28, found 372 ranges, lwb=9236479, not all ranges encoded
    fio-1580  [012]  1258.817439: bl_ext_tree_prepare_commit:
        ret=0, found 295 ranges, lwb=10485759

Signed-off-by: Sergey Bashirov <sergeybashirov@...il.com>
---
Sergey Bashirov (4):
  pNFS: Fix uninited ptr deref in block/scsi layout
  pNFS: Fix extent encoding in block/scsi layout
  pNFS: Add prepare commit trace to block/scsi layout
  pNFS: Handle RPC size limit for layoutcommits

 fs/nfs/blocklayout/extent_tree.c | 104 +++++++++++++++++++++++++++----
 fs/nfs/nfs4trace.c               |   1 +
 fs/nfs/nfs4trace.h               |  34 ++++++++++
 fs/nfs/pnfs.c                    |  11 +++-
 4 files changed, 134 insertions(+), 16 deletions(-)

-- 
2.43.0