FreeNAS（9.10-STABLE-201605240427）サーバーと複数のCentOS 6.4システムがあります。ただし、CentOSシステムは、CIFSまたはNFS（3および4）を使用してマウントされているかどうかにかかわらず、4KBを超えるファイルに対してFreeNASマウントに書き込めないようです。
奇妙な理由で、4KB（ページサイズ）より大きいファイルに書き込もうとするたびに一種のデッドロックが発生するようです。
これは、/ bin / lsをマウントにコピーしようとしたときのCentOSシステムのNFSデバッグログからの抜粋です。
Sep 2 22:13:20 RAX-NERVE kernel: NFS: nfs_update_inode(0:17/4 fh_crc=0x2877d5c3 ct=2 info=0x227e7f)
Sep 2 22:13:20 RAX-NERVE kernel: NFS: permission(0:17/4), mask=0x1, res=0
Sep 2 22:13:20 RAX-NERVE kernel: NFS: atomic_lookup(0:17/4), ls
Sep 2 22:13:20 RAX-NERVE kernel: NFS: lookup(/ls)
Sep 2 22:13:20 RAX-NERVE kernel: NFS call lookup ls
Sep 2 22:13:20 RAX-NERVE kernel: encode_compound: tag=
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_type: type=0100000
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_change: change attribute=8013396
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_size: file size=0
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_fsid: fsid=(0x76431d7a/0x9cf9cdde)
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_fileid: fileid=41
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_fs_locations: fs_locations done, error = 0
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_mode: file mode=0775
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_nlink: nlink=1
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_owner: uid=99
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_group: gid=99
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_rdev: rdev=(0x3:0xc7)
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_space_used: space used=512
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_time_access: atime=502412
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_time_metadata: ctime=1472850295
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_time_modify: mtime=1472850295
Sep 2 22:13:20 RAX-NERVE kernel: decode_attr_mounted_on_fileid: fileid=41
Sep 2 22:13:20 RAX-NERVE kernel: decode_getfattr_attrs: xdr returned -2097152
Sep 2 22:13:20 RAX-NERVE kernel: decode_getfattr_generic: xdr returned 0
Sep 2 22:13:20 RAX-NERVE kernel: NFS reply lookup: 0
Sep 2 22:13:20 RAX-NERVE kernel: NFS: nfs_fhget(0:17/41 fh_crc=0x2947d423 ct=1)
Sep 2 22:13:20 RAX-NERVE kernel: NFS: dentry_delete(/ls, 0)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: permission(0:17/4), mask=0x1, res=0
Sep 2 22:13:21 RAX-NERVE kernel: --> nfs_put_client({2})
Sep 2 22:13:21 RAX-NERVE kernel: encode_compound: tag=
Sep 2 22:13:21 RAX-NERVE kernel: encode_compound: tag=
Sep 2 22:13:21 RAX-NERVE kernel: nfs4_schedule_state_renewal: requeueing work. Lease period = 48
Sep 2 22:13:21 RAX-NERVE kernel: --> nfs_put_client({3})
Sep 2 22:13:21 RAX-NERVE kernel: --> nfs_put_client({2})
Sep 2 22:13:21 RAX-NERVE kernel: <-- nfs4_setup_sequence status=0
Sep 2 22:13:21 RAX-NERVE kernel: encode_compound: tag=
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_type: type=0100000
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_change: change attribute=8013396
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_size: file size=0
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_fsid: fsid=(0x76431d7a/0x9cf9cdde)
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_fileid: fileid=41
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_fs_locations: fs_locations done, error = 0
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_mode: file mode=0775
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_nlink: nlink=1
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_owner: uid=-2
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_group: gid=-2
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_rdev: rdev=(0x3:0xc7)
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_space_used: space used=512
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_time_access: atime=502412
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_time_metadata: ctime=1472850295
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_time_modify: mtime=1472850295
Sep 2 22:13:21 RAX-NERVE kernel: decode_attr_mounted_on_fileid: fileid=41
Sep 2 22:13:21 RAX-NERVE kernel: decode_getfattr_attrs: xdr returned -2097152
Sep 2 22:13:21 RAX-NERVE kernel: decode_getfattr_generic: xdr returned 0
Sep 2 22:13:21 RAX-NERVE kernel: encode_compound: tag=
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_update_inode(0:17/41 fh_crc=0x2947d423 ct=3 info=0x227e7f)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_fhget(0:17/41 fh_crc=0x2947d423 ct=3)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfsi 0xffff880117664930 disabling cache
Sep 2 22:13:21 RAX-NERVE kernel: NFS: permission(0:17/41), mask=0x22, res=0
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write(/ls, 109208@0)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@0)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@0)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@0)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 4096)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@4096)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@4096)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@4096)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 8192)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@8192)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@8192)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@8192)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 12288)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@12288)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@12288)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@12288)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 16384)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@16384)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@16384)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@16384)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 20480)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@20480)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@20480)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@20480)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 24576)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@24576)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@24576)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@24576)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 28672)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@28672)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@28672)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@28672)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 32768)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@32768)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@32768)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@32768)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 36864)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@36864)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@36864)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@36864)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 40960)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@40960)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@40960)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@40960)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 45056)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@45056)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@45056)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@45056)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 49152)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@49152)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@49152)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@49152)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 53248)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@53248)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@53248)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@53248)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 57344)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@57344)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@57344)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@57344)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 61440)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@61440)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@61440)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@61440)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 65536)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@65536)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@65536)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@65536)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 69632)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@69632)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@69632)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@69632)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 73728)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@73728)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@73728)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@73728)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 77824)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@77824)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@77824)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@77824)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 81920)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@81920)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@81920)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@81920)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 86016)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@86016)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@86016)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@86016)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 90112)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@90112)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@90112)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@90112)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 94208)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@94208)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@94208)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@94208)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 98304)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@98304)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@98304)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@98304)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 102400)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 4096@102400)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 4096@102400)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 4096@102400)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 106496)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_begin(/ls(41), 2712@106496)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: write_end(/ls(41), 2712@106496)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage(/ls 2712@106496)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: nfs_updatepage returns 0 (isize 109208)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: flush(/ls)
Sep 2 22:13:21 RAX-NERVE kernel: NFS: 0 initiated write call (req 0:17/41, 109208 bytes @ offset 0)
Sep 2 22:13:21 RAX-NERVE kernel: <-- nfs4_setup_sequence status=0
Sep 2 22:13:21 RAX-NERVE kernel: encode_compound: tag=
Sep 2 22:14:09 RAX-NERVE kernel: nfs4_renew_state: start
Sep 2 22:14:09 RAX-NERVE kernel: nfs4_renew_state: done
Sep 2 22:15:33 RAX-NERVE kernel: INFO: task cp:2850 blocked for more than 120 seconds.
Sep 2 22:15:33 RAX-NERVE kernel: Not tainted 2.6.32-642.4.2.el6.x86_64 #1
Sep 2 22:15:33 RAX-NERVE kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 2 22:15:33 RAX-NERVE kernel: cp D 0000000000000003 0 2850 2296 0x00000080
Sep 2 22:15:33 RAX-NERVE kernel: ffff88012c3afc78 0000000000000082 ffff88012c3afbc8 ffffffffa051b3ee
Sep 2 22:15:33 RAX-NERVE kernel: ffff88012c3afbf8 ffffffffa051bc90 ffff88012c3afbe8 ffff88012c3afc28
Sep 2 22:15:33 RAX-NERVE kernel: ffff88012c77bc70 ffff880117664af8 ffff88012798fad8 ffff88012c3affd8
Sep 2 22:15:33 RAX-NERVE kernel: Call Trace:
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffffa051b3ee>] ? rpc_make_runnable+0x7e/0x80 [sunrpc]
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffffa051bc90>] ? rpc_execute+0x50/0xa0 [sunrpc]
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff8112e3f0>] ? sync_page+0x0/0x50
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff81549163>] io_schedule+0x73/0xc0
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff8112e42d>] sync_page+0x3d/0x50
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff81549c4f>] __wait_on_bit+0x5f/0x90
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff8112e663>] wait_on_page_bit+0x73/0x80
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff810a6920>] ? wake_bit_function+0x0/0x50
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff811447a5>] ? pagevec_lookup_tag+0x25/0x40
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff8112ea8b>] wait_on_page_writeback_range+0xfb/0x190
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff8112ec58>] filemap_write_and_wait_range+0x78/0x90
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff811cc92e>] vfs_fsync_range+0x7e/0x100
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff811cca1d>] vfs_fsync+0x1d/0x20
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffffa05bb9e0>] nfs_file_flush+0x70/0xa0 [nfs]
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff811967fc>] filp_close+0x3c/0x90
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff811968f5>] sys_close+0xa5/0x100
Sep 2 22:15:33 RAX-NERVE kernel: [<ffffffff8100b0d2>] system_call_fastpath+0x16/0x1b
私はこの問題の原因が何であるかわかりません。 WindowsとOS Xの両方のクライアントは、問題なくこれらのパーティションをマウント、読み取り、書き込みできます。これらのデバイスは同じスイッチに直接接続され、VLANタグ/仮想インターフェイスに加えてネットワークに障害が発生する理由はありません。
Ubuntuコンピュータで問題を再現できたので、FreeNASサーバー自体に欠陥があると思いましたが、再インストールしても問題は解決しませんでした。
答え1
それを解決しました。
FreeNASのデフォルトMTU設定は9000で、ネットワークカードはこの設定をサポートしていません。したがって、多くのパケットが廃棄され、中断が発生する可能性があります。
回避策は、ネットワークインターフェイスの設定に「mtu 1400」を追加することです。
これはネットワークの問題です。これが同じ場所にいる誰かに役立つことを願っています。