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git-svn-id: http://svn.code.sf.net/p/scst/svn/trunk@3557 d57e44dd-8a1f-0410-8b47-8ef2f437770f
133 lines
5.6 KiB
Plaintext
133 lines
5.6 KiB
Plaintext
ib_srpt Test Procedure
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======================
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At least the following tests must be run before releasing a new SRPT version:
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* Make sure that SRPT compiles and installs without triggering any
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compiler warning. Use the following command to compile and install SRPT:
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for d in scst srpt; do make -C $d -s clean && make -C $d -s install; done
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* Verify the output of run-regression-tests for kernel versions starting at
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2.6.23 up to and including the latest released kernel.
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* Verify that SRPT compiles, installs and works fine when following the
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instructions in README.ofed for the latest released OFED distribution and
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at the latest released CentOS, Ubuntu and openSUSE distributions.
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* Verify that module loading and unloading works fine.
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* Verify that rejecting logins does not trigger a memory leak, e.g. as follows:
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* Run the following command on the target system:
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${SCST_TRUNK}/scripts/monitor-memory-usage | tee memlog.txt
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* Run the following command on the initiator system:
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target_id="$(/usr/sbin/ibsrpdm -c -d /dev/infiniband/umad0)"
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for ((i=0;i<100000;i++)); do echo "$target_id" >/sys/class/infiniband_srp/srp-mlx4_0-1/add_target; done
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* Verify that the following I/O stress test does not report any errors even
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when left running for several hours:
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dev=...
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umount /mnt
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mkfs.ext4 -O ^has_journal $dev
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while \
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mount $dev /mnt && \
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rm -rf /mnt/test* && \
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fio --verify=md5 -rw=randwrite --size=10m --bs=4k \
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--loops=1000000 --iodepth=64 --group_reporting --sync=1 --direct=1 \
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--norandommap --ioengine=aio --directory=/mnt --name=test --thread \
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--numjobs=80 --runtime=30 && \
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fsck -N $dev
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do
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true
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done
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* Repeat the above test with SCST_MAX_TGT_DEV_COMMANDS set to 48 and after
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having applied the patch below on ib_srpt.c. The expected result is that no
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data corruption occurs but that on the target error messages are logged
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about a negative req_lim value. The lowest expected value for req_lim is -15.
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Index: srpt/src/ib_srpt.c
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===================================================================
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--- srpt/src/ib_srpt.c (revision 2412)
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+++ srpt/src/ib_srpt.c (working copy)
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@@ -2411,7 +2411,7 @@
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ch->max_ti_iu_len = it_iu_len;
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rsp->buf_fmt = __constant_cpu_to_be16(SRP_BUF_FORMAT_DIRECT
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| SRP_BUF_FORMAT_INDIRECT);
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- rsp->req_lim_delta = cpu_to_be32(ch->rq_size);
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+ rsp->req_lim_delta = cpu_to_be32(ch->rq_size + 16);
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atomic_set(&ch->req_lim, ch->rq_size);
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/* create cm reply */
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* Verify that a SCSI reset works properly by running the following command
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on an initiator system (note: with kernel version 2.6.37 and before the
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command below triggers a bug in the Linux SRP initiator -- see also
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https://bugzilla.kernel.org/show_bug.cgi?id=13893):
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(target)
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echo add debug > /sys/kernel/scst_tgt/targets/ib_srpt/trace_level
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(initiator)
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sg_reset -d ${initiator_device}
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Verify that the target logged that it has processed a SRP_TSK_LUN_RESET
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message.
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* Run the following command on a target system:
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while true; do /etc/init.d/scst stop; sleep 3; /etc/init.d/scst start; sleep 5; done
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and the following commands on an initiator system:
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target_id="$(/usr/sbin/ibsrpdm -c -d /dev/infiniband/umad0)"
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while true; do date; rmmod ib_srp; modprobe ib_srp; echo "${target_id}" > /sys/class/infiniband_srp/srp-mlx4_0-1/add_target; sleep 2; done
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and verify that nothing unexpected happens.
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* Log in twice from an initiator system, and verify that the first session
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receives a DREQ upon the second login:
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target_id="$(/usr/sbin/ibsrpdm -c -d /dev/infiniband/umad0)"
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dmesg -c
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echo "${target_id}" > /sys/class/infiniband_srp/srp-mlx4_0-1/add_target
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dmesg -c
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echo "${target_id}" > /sys/class/infiniband_srp/srp-mlx4_0-1/add_target
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dmesg -c
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echo "${target_id}" > /sys/class/infiniband_srp/srp-mlx4_0-1/add_target
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* Test low memory conditions: load SRPT, reduce the amount of available
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memory by creating a large file on a tmpfs file system and run a stress test
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on an initiator system.
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* Test the state machine for SCST commands in SRPT by using SCST's error
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injection mechanism. Add the following to scst/src/Makefile, log in from
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an initiator system and trigger SRP I/O:
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EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG -g
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EXTRA_CFLAGS += -DCONFIG_SCST_DEBUG_TM -DCONFIG_SCST_TM_DBG_GO_OFFLINE
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* Test with multiple values of ib_srp_tablesize in the range 1..128.
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* Verify that the initiator does not lock up while running the command below
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(see also https://bugzilla.kernel.org/show_bug.cgi?id=14235):
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dev=...
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fio --bs=512 --buffered=0 --ioengine=libaio --rw=read --invalidate=1 \
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--thread --numjobs=8 --loops=10 --gtod_reduce=1 --group_reporting \
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--name=$dev --filename=$dev
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* Test whether queue overflow recovery works correctly as follows:
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- On the target, reload ib_srpt with srpt_sq_size set to 64.
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- On the initiator, run a direct I/O test with large block sizes, e.g.
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scripts/blockdev-perftest -f -d -j -m 12 -M 24 /dev/sdb
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- On the initiator, run the following two commands in parallel:
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scripts/blockdev-perftest -r -d -j -m 12 -M 24 /dev/sdb
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fio --verify=md5 -rw=randwrite --size=10m --bs=4k \
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--loops=1000000 --iodepth=64 --group_reporting --sync=1 --direct=1 \
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--norandommap --ioengine=aio --directory=/mnt --name=test --thread \
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--numjobs=80 --runtime=30
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* Repeat the above tests for all three threading modes: thread=0, thread=1
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and thread=2.
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