Provided by: nfstest_3.2-3_all 
NAME
nfstest_sparse - Sparse file tests
SYNOPSIS
nfstest_sparse --server <server> [options]
DESCRIPTION
Verify correct functionality of sparse files. These are files which have unallocated or uninitialized
data blocks as holes. The new NFSv4.2 operation SEEK is used to search for the next hole or data segment
in a file.
Basic tests verify the SEEK operation returns the correct offset of the next hole or data with respect to
the starting offset given to the seek system call. Verify the SEEK operation is sent to the server with
the correct stateid as a READ call. All files have a virtual hole at the end of the file so when
searching for the next hole, even if the file does not have a hole, it returns the size of the file.
Some tests include testing at the protocol level by taking a packet trace and inspecting the actual
packets sent to the server.
Negative tests include trying to SEEK starting from an offset beyond the end of the file.
OPTIONS
--version
show program's version number and exit
-h, --help
show this help message and exit
-f FILE, --file=FILE
File where options are specified besides the system wide file /etc/nfstest, user wide file
$HOME/.nfstest or in the current directory .nfstest file
NFS specific options:
-s SERVER, --server=SERVER
Server name or IP address
-e EXPORT, --export=EXPORT
Exported file system to mount [default: '/']
--nfsversion=NFSVERSION
NFS version, e.g., 3, 4, 4.1, etc. [default: 4.2]
-m MTPOINT, --mtpoint=MTPOINT
Mount point [default: '/mnt/t']
-p PORT, --port=PORT
NFS server port [default: 2049]
--proto=PROTO
NFS protocol name [default: 'tcp']
--sec=SEC
Security flavor [default: 'sys']
--nconnect=NCONNECT
Multiple TCP connections option [default: '1']
-o MTOPTS, --mtopts=MTOPTS
Mount options [default: 'hard,rsize=4096,wsize=4096']
--datadir=DATADIR
Data directory where files are created, directory is created on the mount point [default: '']
Logging options:
-v VERBOSE, --verbose=VERBOSE
Verbose level for debug messages [default: 'opts|info|dbg1|dbg2|dbg3']
--tverbose=TVERBOSE
Verbose level for test messages [default: '1']
--createlog
Create log file
--rexeclog
Create rexec log files
--warnings
Display warnings
--tag=TAG
Informational tag, it is displayed as an INFO message [default: '']
--notty
Do not use terminal colors on output
--isatty
Use terminal colors on output -- useful when running with nohup
Packet trace options:
--createtraces
Create a packet trace for each test
--tbsize=TBSIZE
Capture buffer size for tcpdump [default: 192k]
--trcdelay=TRCDELAY
Seconds to delay before stopping packet trace [default: 2.0]
--keeptraces
Do not remove any trace files [default: remove trace files if no errors]
--rmtraces
Remove trace files [default: remove trace files if no errors]
-i INTERFACE, --interface=INTERFACE
Device interface [default: automatically selected]
File options:
--nfiles=NFILES
Number of files to create [default: 2]
--filesize=FILESIZE
File size to use for test files [default: 64k]
--rsize=RSIZE
Read size to use when reading files [default: 4k]
--wsize=WSIZE
Write size to use when writing files [default: 4k]
--iodelay=IODELAY
Seconds to delay I/O operations [default: 0.1]
--offset-delta=OFFSET_DELTA
Read/Write offset delta [default: 4k]
Path options:
--sudo=SUDO
Full path of binary for sudo [default: '/usr/bin/sudo']
--kill=KILL
Full path of binary for kill [default: '/usr/bin/kill']
--nfsstat=NFSSTAT
Full path of binary for nfsstat [default: '/usr/sbin/nfsstat']
--tcpdump=TCPDUMP
Full path of binary for tcpdump [default: '/usr/sbin/tcpdump']
--iptables=IPTABLES
Full path of binary for iptables [default: '/usr/sbin/iptables']
--messages=MESSAGES
Full path of log messages file [default: '/var/log/messages']
--trcevents=TRCEVENTS
Full path of tracing events directory [default: '/sys/kernel/debug/tracing/events']
--trcpipe=TRCPIPE
Full path of trace pipe file [default: '/sys/kernel/debug/tracing/trace_pipe']
--tmpdir=TMPDIR
Temporary directory [default: '/tmp']
Debug options:
--nocleanup
Do not cleanup created files
--notimestamps
Do not display timestamps in debug messages
--bugmsgs=BUGMSGS
File containing test messages to mark as bugs if they failed
--nomount
Do not mount server and run the tests on local disk space
--basename=BASENAME
Base name for all files and logs [default: automatically generated]
--nfsdebug=NFSDEBUG
Set NFS kernel debug flags and save log messages [default: '']
--rpcdebug=RPCDEBUG
Set RPC kernel debug flags and save log messages [default: '']
--tracepoints=TRACEPOINTS
List of trace points modules to enable [default: '']
--nfsstats
Get NFS stats [default: 'False']
--pktdisp
Display main packets related to the given test
--nfserrors
Fail every NFS error found in the packet trace
--client-ipaddr=CLIENT_IPADDR
IP address of localhost
Reporting options:
--xunit-report
Generate xUnit compatible test report
--xunit-report-file=XUNIT_REPORT_FILE
Path to xout report file
Test options:
--runtest=RUNTEST
Comma separated list of tests to run, if list starts with a '^' then all tests are run except the
ones listed [default: 'all']
TESTS
seek
Run all SEEK tests: seek01, seek02, seek03, seek04
seek01
Verify SEEK succeeds searching for the next data
seek02
Verify SEEK succeeds searching for the next hole
seek03
Verify SEEK searching for next data fails with ENXIO when offset is beyond the end of the file
seek04
Verify SEEK searching for next hole fails with ENXIO when offset is beyond the end of the file
all
Run all tests: seek01, seek02, seek03, seek04
EXAMPLES
The only required option is --server
$ nfstest_sparse --server 192.168.0.11
NOTES
The user id in the local host must have access to run commands as root using the 'sudo' command without
the need for a password.
Valid only for NFS version 4.2 and above.
SEE ALSO
nfstest.test_util(3), nfstest.utils(3), nfstest_alloc(1), nfstest_cache(1), nfstest_delegation(1),
nfstest_dio(1), nfstest_fcmp(1), nfstest_file(1), nfstest_interop(1), nfstest_io(1), nfstest_lock(1),
nfstest_pkt(1), nfstest_pnfs(1), nfstest_posix(1), nfstest_rdma(1), nfstest_ssc(1), nfstest_xattr(1),
nfstest_xid(1), packet.nfs.nfs4_const(3)
BUGS
No known bugs.
AUTHOR
Jorge Mora (mora@netapp.com)