1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
. "$(cd "$(dirname "$0")" && pwd)"/test_common.sh
TID="generic_15"
ERR_CODE=0
_test_partition_scan_no_hang()
{
local recovery_flag=$1
local expected_state=$2
local dev_id
local state
local daemon_pid
local start_time
local elapsed
# Create ublk device with fault_inject target and very large delay
# to simulate hang during partition table read
# --delay_us 60000000 = 60 seconds delay
# Use _add_ublk_dev_no_settle to avoid udevadm settle hang waiting
# for partition scan events to complete
if [ "$recovery_flag" = "yes" ]; then
echo "Testing partition scan with recovery support..."
dev_id=$(_add_ublk_dev_no_settle -t fault_inject -q 1 -d 1 --delay_us 60000000 -r 1)
else
echo "Testing partition scan without recovery..."
dev_id=$(_add_ublk_dev_no_settle -t fault_inject -q 1 -d 1 --delay_us 60000000)
fi
_check_add_dev "$TID" $?
# The add command should return quickly because partition scan is async.
# Now sleep briefly to let the async partition scan work start and hit
# the delay in the fault_inject handler.
sleep 1
# Kill the ublk daemon while partition scan is potentially blocked
# And check state transitions properly
start_time=${SECONDS}
daemon_pid=$(_get_ublk_daemon_pid "${dev_id}")
state=$(__ublk_kill_daemon "${dev_id}" "${expected_state}")
elapsed=$((SECONDS - start_time))
# Verify the device transitioned to expected state
if [ "$state" != "${expected_state}" ]; then
echo "FAIL: Device state is $state, expected ${expected_state}"
ERR_CODE=255
${UBLK_PROG} del -n "${dev_id}" > /dev/null 2>&1
return
fi
echo "PASS: Device transitioned to ${expected_state} in ${elapsed}s without hanging"
# Clean up the device
${UBLK_PROG} del -n "${dev_id}" > /dev/null 2>&1
}
_prep_test "partition_scan" "verify async partition scan prevents IO hang"
# Test 1: Without recovery support - should transition to DEAD
_test_partition_scan_no_hang "no" "DEAD"
# Test 2: With recovery support - should transition to QUIESCED
_test_partition_scan_no_hang "yes" "QUIESCED"
_cleanup_test "partition_scan"
_show_result $TID $ERR_CODE
|
