CoCalc -- sync

GitHub Repository: freebsd/freebsd-src
Path: blob/main/tests/sys/geom/class/mirror/sync_error.sh
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ATF_TEST=true
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. $(atf_get_srcdir)/conf.sh
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REG_READ_FP=debug.fail_point.g_mirror_regular_request_read
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atf_test_case sync_read_error_2_disks cleanup
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sync_read_error_2_disks_head()
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{
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	atf_set "descr" \
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		"Ensure that we properly handle read errors during synchronization."
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	atf_set "require.user" "root"
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}
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sync_read_error_2_disks_body()
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{
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	geom_atf_test_setup
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	f1=$(mktemp ${base}.XXXXXX)
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	f2=$(mktemp ${base}.XXXXXX)
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	atf_check dd if=/dev/zero bs=1M count=32 of=$f1 status=none
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	atf_check truncate -s 32M $f2 
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	attach_md md1 -t vnode -f ${f1}
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	attach_md md2 -t vnode -f ${f2}
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	atf_check gmirror label $name $md1
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	devwait
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	atf_check -s ignore -e empty -o not-empty sysctl ${REG_READ_FP}="1*return(5)[pid $(gmirror_worker_pid)]"
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	# If a read error occurs while synchronizing and the mirror contains
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	# a single active disk, gmirror has no choice but to fail the
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	# synchronization and kick the new disk out of the mirror.
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	atf_check gmirror insert $name $md2
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	sleep 0.1
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	syncwait
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	atf_check [ $(gmirror status -s $name | wc -l) -eq 1 ]
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	atf_check -s exit:0 -o match:"DEGRADED  $md1 \(ACTIVE\)" \
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		gmirror status -s $name
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}
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sync_read_error_2_disks_cleanup()
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{
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	atf_check -s ignore -e ignore -o ignore sysctl ${REG_READ_FP}='off'
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	gmirror_test_cleanup
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}
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atf_test_case sync_read_error_3_disks cleanup
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sync_read_error_3_disks_head()
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{
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	atf_set "descr" \
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		"Ensure that we properly handle read errors during synchronization."
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	atf_set "require.user" "root"
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}
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sync_read_error_3_disks_body()
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{
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	geom_atf_test_setup
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	f1=$(mktemp ${base}.XXXXXX)
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	f2=$(mktemp ${base}.XXXXXX)
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	f3=$(mktemp ${base}.XXXXXX)
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	atf_check dd if=/dev/random bs=1M count=32 of=$f1 status=none
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	atf_check truncate -s 32M $f2
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	atf_check truncate -s 32M $f3
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	attach_md md1 -t vnode -f ${f1}
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	attach_md md2 -t vnode -f ${f2}
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	attach_md md3 -t vnode -f ${f3}
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	atf_check gmirror label $name $md1
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	devwait
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	atf_check gmirror insert $name $md2
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	syncwait
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	atf_check -s exit:0 -e empty -o not-empty sysctl ${REG_READ_FP}="1*return(5)[pid $(gmirror_worker_pid)]"
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	# If a read error occurs while synchronizing a new disk, and we have
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	# multiple active disks, we retry the read after an error. The disk
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	# which returned the read error is kicked out of the mirror.
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	atf_check gmirror insert $name $md3
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	syncwait
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	atf_check [ $(gmirror status -s $name | wc -l) -eq 2 ]
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	atf_check -s exit:0 -o match:"DEGRADED  $md3 \(ACTIVE\)" \
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		gmirror status -s $name
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	# Make sure that the two active disks are identical. Destroy the
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	# mirror first so that the metadata sectors are wiped.
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	if $(gmirror status -s $name | grep -q $md1); then
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		active=$md1
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	else
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		active=$md2
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	fi
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	atf_check gmirror destroy $name
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	atf_check cmp /dev/$active /dev/$md3
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}
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sync_read_error_3_disks_cleanup()
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{
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	atf_check -s ignore -e ignore -o ignore sysctl ${REG_READ_FP}='off'
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	gmirror_test_cleanup
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}
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atf_init_test_cases()
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{
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	atf_add_test_case sync_read_error_2_disks
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	atf_add_test_case sync_read_error_3_disks
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}
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