#!/bin/bash
export disk_a=/dev/sda
export disk_a1=/dev/sda1
export disk_a2=/dev/sda2
export disk_b=/dev/sdb
export mount_point_a=/mnt/sda
export mount_point_b=/mnt/sdb
export write_dev=test_write


dmesg -C
echo "allow write mounted test" > log.txt

#case 1
echo "------ case1 ------"
echo "------ case1 ------" >> log.txt
sleep 1s
./$write_dev $disk_a &
sleep 1s
./$write_dev $disk_a &
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 2
echo "------ case2 ------"
echo "------ case2 ------" >> log.txt
sleep 1s
./$write_dev $disk_b &
sleep 1s
mount $disk_b $mount_point_b
sleep 1s
umount $mount_point_b
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 3
echo "------ case3 ------"
echo "------ case3 ------" >> log.txt
sleep 1s
./$write_dev $disk_a &
sleep 1s
./$write_dev $disk_a1 &
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 4
echo "------ case4 ------"
echo "------ case4 ------" >> log.txt
sleep 1s
./$write_dev $disk_a &
sleep 1s
mount $disk_a1 $mount_point_a
sleep 1s
killall $write_dev
sleep 1s
umount $mount_point_a
dmesg >> log.txt
dmesg -C

#case 5
echo "------ case5 ------"
echo "------ case5 ------" >> log.txt
sleep 1s
mount $disk_b $mount_point_b
sleep 1s
./$write_dev $disk_b &
sleep 1s
umount $mount_point_b
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 6
echo "------ case6 ------"
echo "------ case6 ------" >> log.txt
sleep 1s
mount $disk_b $mount_point_a
sleep 1s
mount $disk_b $mount_point_b
sleep 1s
umount $mount_point_b
sleep 1s
umount $mount_point_a
dmesg >> log.txt
dmesg -C

#case 7
echo "------ case7 ------"
echo "------ case7 ------" >> log.txt
sleep 1s
./$write_dev $disk_a &
sleep 1s
./$write_dev $disk_a1 &
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 8
echo "------ case8 ------"
echo "------ case8 ------" >> log.txt
sleep 1s
./$write_dev $disk_a1 &
sleep 1s
./$write_dev $disk_a2 &
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 9
echo "------ case9 ------"
echo "------ case9 ------" >> log.txt
sleep 1s
./$write_dev $disk_a1 &
sleep 1s
mount $disk_a2 $mount_point_a
sleep 1s
umount $mount_point_a
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 10
echo "------ case10 ------"
echo "------ case10 ------" >> log.txt
sleep 1s
mount $disk_a1 $mount_point_a
sleep 1s
./$write_dev $disk_a &
sleep 1s
umount $mount_point_a
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 11
echo "------ case11 ------"
echo "------ case11 ------" >> log.txt
sleep 1s
mount $disk_a1 $mount_point_a
sleep 1s
./$write_dev $disk_a2 &
sleep 1s
umount $mount_point_a
sleep 1s
killall $write_dev
dmesg >> log.txt
dmesg -C

#case 12
echo "------ case12 ------"
echo "------ case12 ------" >> log.txt
sleep 1s
mount $disk_a1 $mount_point_a
sleep 1s
mount $disk_a2 $mount_point_b
sleep 1s
dmesg >> log.txt
umount $mount_point_b
sleep 1s
umount $mount_point_a
dmesg >> log.txt
dmesg -C

#case 13
echo "------ case13 ------"
echo "------ case13 ------" >> log.txt
dmsetup create test --table "0 2097152 linear /dev/sdc 0"
sleep 1s
mkfs.ext4 -F /dev/mapper/test
sleep 1s
mount /dev/mapper/test $mount_point_a
sleep 1s
./$write_dev /dev/sdc &
sleep 1s
umount $mount_point_a
sleep 1s
killall $write_dev
sleep 1s
dmsetup remove /dev/mapper/test
dmesg >> log.txt
dmesg -C

#case 14
echo "------ case14 ------"
echo "------ case14 ------" >> log.txt
dmsetup create test --table "0 2097152 linear /dev/sdd1 0"
sleep 1s
mkfs.ext4 -F /dev/mapper/test
sleep 1s
mount /dev/mapper/test $mount_point_a
sleep 1s
./$write_dev /dev/sdd &
sleep 1s
umount $mount_point_a
sleep 1s
killall $write_dev
sleep 1s
dmsetup remove /dev/mapper/test
dmesg >> log.txt
dmesg -C

<< COMMENT

dm(sda) --> write sda
dmsetup create test --table "0 2097152 linear /dev/sdc 0"
./test_write sdc

dm(sda block_start~block_n) --> dm(sda block_n~block_end)
dmsetup create test --table "0 2097152 linear /dev/sdc 0"
dmsetup create test1 --table "0 2097152 linear /dev/sdc 2097152"

dm(sda1) --> write sda
dm(sda1) --> write sda1
dm(sda1) --> write sda2
dmsetup create test --table "0 2097152 linear /dev/sdd1 0"

write sda1 --> mkfs sda --> mount sda (--> write sda2)

COMMENT

#case 15
echo "------ case15 ------"
echo "------ case15 ------" >> log.txt
dmsetup create test --table "0 2097152 linear /dev/sdc 0"
sleep 1s
./$write_dev /dev/sdc &
sleep 1s
killall $write_dev
sleep 1s
dmsetup remove /dev/mapper/test
dmesg >> log.txt
dmesg -C

#case 16
echo "------ case16 ------"
echo "------ case16 ------" >> log.txt
sleep 1s
dmsetup create test --table "0 2097152 linear /dev/sdc 0"
sleep 1s
dmsetup create test1 --table "0 2097152 linear /dev/sdc 2097152"
sleep 1s
dmsetup remove_all
dmesg >> log.txt
dmesg -C

#case 17
echo "------ case17 ------"
echo "------ case17 ------" >> log.txt
sleep 1s
dmsetup create test --table "0 2097152 linear /dev/sdd1 0"
sleep 1s
./$write_dev /dev/sdd &
sleep 1s
./$write_dev /dev/sdd1 &
sleep 1s
./$write_dev /dev/sdd2 &
sleep 1s
killall $write_dev
sleep 1s
dmsetup remove_all
dmesg >> log.txt
dmesg -C

#case 18
echo "------ case18 ------"
echo "------ case18 ------" >> log.txt
sleep 1s
./$write_dev $disk_a1 &
sleep 1s
mkfs.ext4 -F $disk_a
sleep 1s
mount $disk_a $mount_point_a
sleep 1s
./$write_dev $disk_a2 &
sleep 1s
umount $mount_point_a
sleep 1s
killall $write_dev
sleep 1s
dmsetup remove_all
dmesg >> log.txt
dmesg -C

allow write mounted test
------ case1 ------
[ 5428.259432]  sda: sda1 sda2
------ case2 ------
[ 5431.067332] VFS: Open a write opened block device exclusively [sdb]. current [2731 mount]. parent [2712 sh]
[ 5431.083330] EXT4-fs (sdb): mounted filesystem 23f08dd0-fd34-48a7-a3c6-0b7492ae1b87 r/w with ordered data mode. Quota mode: none.
[ 5432.321365] EXT4-fs (sdb): unmounting filesystem 23f08dd0-fd34-48a7-a3c6-0b7492ae1b87.
------ case3 ------
[ 5436.900151]  sda: sda1 sda2
------ case4 ------
[ 5439.387615] VFS: Open a write opened block device exclusively [sda1]. current [2759 mount]. parent [2712 sh]
[ 5439.401117] EXT4-fs (sda1): mounted filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9 r/w with ordered data mode. Quota mode: none.
[ 5441.752648] EXT4-fs (sda1): unmounting filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9.
------ case5 ------
[ 5442.847800] EXT4-fs (sdb): mounted filesystem 23f08dd0-fd34-48a7-a3c6-0b7492ae1b87 r/w with ordered data mode. Quota mode: none.
[ 5443.976154] VFS: Open an exclusive opened block device for write [sdb]. current [2779 test_write]. parent [2712 sh]
[ 5443.976197] VFS: Open an exclusive opened block device for write [sdb]. current [2779 test_write]. parent [2712 sh]
[ 5444.994665] EXT4-fs (sdb): unmounting filesystem 23f08dd0-fd34-48a7-a3c6-0b7492ae1b87.
------ case6 ------
[ 5447.297667] EXT4-fs (sdb): mounted filesystem 23f08dd0-fd34-48a7-a3c6-0b7492ae1b87 r/w with ordered data mode. Quota mode: none.
[ 5450.619095] EXT4-fs (sdb): unmounting filesystem 23f08dd0-fd34-48a7-a3c6-0b7492ae1b87.
------ case7 ------
[ 5453.840399]  sda: sda1 sda2
------ case8 ------
------ case9 ------
[ 5459.799477] EXT4-fs (sda2): mounted filesystem 75f74aad-9d62-4d26-8053-d4b34dd34458 r/w with ordered data mode. Quota mode: none.
[ 5461.033568] EXT4-fs (sda2): unmounting filesystem 75f74aad-9d62-4d26-8053-d4b34dd34458.
------ case10 ------
[ 5463.346000] EXT4-fs (sda1): mounted filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9 r/w with ordered data mode. Quota mode: none.
[ 5464.501919] VFS: Open an exclusive opened block device for write [sda]. current [2845 test_write]. parent [2712 sh]
[ 5464.501957] VFS: Open an exclusive opened block device for write [sda]. current [2845 test_write]. parent [2712 sh]
[ 5465.542638] EXT4-fs (sda1): unmounting filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9.
[ 5466.686007]  sda: sda1 sda2
------ case11 ------
[ 5467.938750] EXT4-fs (sda1): mounted filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9 r/w with ordered data mode. Quota mode: none.
[ 5470.200728] EXT4-fs (sda1): unmounting filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9.
------ case12 ------
[ 5472.475073] EXT4-fs (sda1): mounted filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9 r/w with ordered data mode. Quota mode: none.
[ 5473.597282] EXT4-fs (sda2): mounted filesystem 75f74aad-9d62-4d26-8053-d4b34dd34458 r/w with ordered data mode. Quota mode: none.
[ 5472.475073] EXT4-fs (sda1): mounted filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9 r/w with ordered data mode. Quota mode: none.
[ 5473.597282] EXT4-fs (sda2): mounted filesystem 75f74aad-9d62-4d26-8053-d4b34dd34458 r/w with ordered data mode. Quota mode: none.
[ 5474.739611] EXT4-fs (sda2): unmounting filesystem 75f74aad-9d62-4d26-8053-d4b34dd34458.
[ 5475.817240] EXT4-fs (sda1): unmounting filesystem 2dc4fe8c-5b13-48b7-9feb-90b4c19f09e9.
------ case13 ------
[ 5475.888307] device-mapper: ioctl: dmsetup[2886]: dm-0 (test) is created successfully
[ 5478.079712] EXT4-fs (dm-0): mounted filesystem 7980214f-fccb-409e-8f4a-0384108c4a43 r/w with ordered data mode. Quota mode: none.
[ 5479.199819] VFS: Open an exclusive opened block device for write [sdc]. current [2902 test_write]. parent [2712 sh]
[ 5480.254805] EXT4-fs (dm-0): unmounting filesystem 7980214f-fccb-409e-8f4a-0384108c4a43.
[ 5482.442767] device-mapper: ioctl: dmsetup[2911]: dm-0 (test) is removed successfully
------ case14 ------
[ 5482.916561] device-mapper: ioctl: dmsetup[2919]: dm-0 (test) is created successfully
[ 5485.142256] EXT4-fs (dm-0): mounted filesystem 7ff73e56-a995-4204-bfe2-81f4c81e7206 r/w with ordered data mode. Quota mode: none.
[ 5486.268686] VFS: Open an exclusive opened block device for write [sdd]. current [2935 test_write]. parent [2712 sh]
[ 5487.299430] EXT4-fs (dm-0): unmounting filesystem 7ff73e56-a995-4204-bfe2-81f4c81e7206.
[ 5489.420202] device-mapper: ioctl: dmsetup[2945]: dm-0 (test) is removed successfully
------ case15 ------
[ 5489.805674] device-mapper: ioctl: dmsetup[2953]: dm-0 (test) is created successfully
[ 5490.931955] VFS: Open an exclusive opened block device for write [sdc]. current [2962 test_write]. parent [2712 sh]
[ 5493.039065] device-mapper: ioctl: dmsetup[2969]: dm-0 (test) is removed successfully
------ case16 ------
[ 5494.492209] device-mapper: ioctl: dmsetup[2978]: dm-0 (test) is created successfully
[ 5495.637207] device-mapper: ioctl: dmsetup[2987]: dm-1 (test1) is created successfully
[ 5496.780646] device-mapper: ioctl: dmsetup[2996]: dm-0 (test) is removed successfully
[ 5496.801795] device-mapper: ioctl: dmsetup[2996]: dm-1 (test1) is removed successfully
------ case17 ------
[ 5498.198215] device-mapper: ioctl: dmsetup[3004]: dm-0 (test) is created successfully
[ 5499.311568] VFS: Open an exclusive opened block device for write [sdd]. current [3013 test_write]. parent [2712 sh]
[ 5500.351574] VFS: Open an exclusive opened block device for write [sdd1]. current [3015 test_write]. parent [2712 sh]
[ 5503.551924] device-mapper: ioctl: dmsetup[3025]: dm-0 (test) is removed successfully
------ case18 ------
[ 5507.214538] VFS: Open a write opened block device exclusively [sda]. current [3039 mount]. parent [2712 sh]
[ 5507.229717] EXT4-fs (sda): mounted filesystem 6a0b85d3-1727-46ef-a48b-3c1e522551e9 r/w with ordered data mode. Quota mode: none.
[ 5508.349631] VFS: Open an exclusive opened block device for write [sda2]. current [3044 test_write]. parent [2712 sh]
[ 5508.349661] VFS: Open an exclusive opened block device for write [sda2]. current [3044 test_write]. parent [2712 sh]
[ 5509.386125] EXT4-fs (sda): unmounting filesystem 6a0b85d3-1727-46ef-a48b-3c1e522551e9.