minio/docs/distributed/decom.sh
Harshavardhana 9693c382a8
make renameData() more defensive during overwrites (#19548)
instead upon any error in renameData(), we still
preserve the existing dataDir in some form for
recoverability in strange situations such as out
of disk space type errors.

Bonus: avoid running list and heal() instead allow
versions disparity to return the actual versions,
uuid to heal. Currently limit this to 100 versions
and lesser disparate objects.

an undo now reverts back the xl.meta from xl.meta.bkp
during overwrites on such flaky setups.

Bonus: Save N depth syscalls via skipping the parents
upon overwrites and versioned updates.

Flaky setup examples are stretch clusters with regular
packet drops etc, we need to add some defensive code
around to avoid dangling objects.
2024-04-23 10:15:52 -07:00

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#!/bin/bash
if [ -n "$TEST_DEBUG" ]; then
set -x
fi
pkill minio
rm -rf /tmp/xl
rm -rf /tmp/xltier
if [ ! -f ./mc ]; then
wget --quiet -O mc https://dl.minio.io/client/mc/release/linux-amd64/mc &&
chmod +x mc
fi
export CI=true
export MINIO_SCANNER_SPEED=fastest
(minio server http://localhost:9000/tmp/xl/{1...10}/disk{0...1} 2>&1 >/tmp/decom.log) &
pid=$!
sleep 30
export MC_HOST_myminio="http://minioadmin:minioadmin@localhost:9000/"
./mc admin user add myminio/ minio123 minio123
./mc admin user add myminio/ minio12345 minio12345
./mc admin policy create myminio/ rw ./docs/distributed/rw.json
./mc admin policy create myminio/ lake ./docs/distributed/rw.json
./mc admin policy attach myminio/ rw --user=minio123
./mc admin policy attach myminio/ lake --user=minio12345
./mc mb -l myminio/versioned
./mc mirror internal myminio/versioned/ --quiet >/dev/null
## Soft delete (creates delete markers)
./mc rm -r --force myminio/versioned >/dev/null
## mirror again to create another set of version on top
./mc mirror internal myminio/versioned/ --quiet >/dev/null
expected_checksum=$(./mc cat internal/dsync/drwmutex.go | md5sum)
user_count=$(./mc admin user list myminio/ | wc -l)
policy_count=$(./mc admin policy list myminio/ | wc -l)
## create a warm tier instance
(minio server /tmp/xltier/{1...4}/disk{0...1} --address :9002 2>&1 >/dev/null) &
sleep 30
export MC_HOST_mytier="http://minioadmin:minioadmin@localhost:9002/"
./mc mb -l myminio/bucket2
./mc mb -l mytier/tiered
## create a tier and set up ilm policy to tier immediately
./mc admin tier add minio myminio TIER1 --endpoint http://localhost:9002 --access-key minioadmin --secret-key minioadmin --bucket tiered --prefix prefix5/
./mc ilm add myminio/bucket2 --transition-days 0 --transition-tier TIER1 --transition-days 0
## mirror some content to bucket2 and capture versions tiered
./mc mirror internal myminio/bucket2/ --quiet >/dev/null
./mc ls -r myminio/bucket2/ >bucket2_ns.txt
./mc ls -r --versions myminio/bucket2/ >bucket2_ns_versions.txt
sleep 30
./mc ls -r --versions mytier/tiered/ >tiered_ns_versions.txt
kill $pid
(minio server http://localhost:9000/tmp/xl/{1...10}/disk{0...1} http://localhost:9001/tmp/xl/{11...30}/disk{0...3} 2>&1 >/tmp/expanded_1.log) &
pid_1=$!
(minio server --address ":9001" http://localhost:9000/tmp/xl/{1...10}/disk{0...1} http://localhost:9001/tmp/xl/{11...30}/disk{0...3} 2>&1 >/tmp/expanded_2.log) &
pid_2=$!
sleep 30
expanded_user_count=$(./mc admin user list myminio/ | wc -l)
expanded_policy_count=$(./mc admin policy list myminio/ | wc -l)
if [ $user_count -ne $expanded_user_count ]; then
echo "BUG: original user count differs from expanded setup"
exit 1
fi
if [ $policy_count -ne $expanded_policy_count ]; then
echo "BUG: original policy count differs from expanded setup"
exit 1
fi
./mc version info myminio/versioned | grep -q "versioning is enabled"
ret=$?
if [ $ret -ne 0 ]; then
echo "expected versioning enabled after expansion"
exit 1
fi
./mc mirror cmd myminio/versioned/ --quiet >/dev/null
./mc ls -r myminio/versioned/ >expanded_ns.txt
./mc ls -r --versions myminio/versioned/ >expanded_ns_versions.txt
./mc admin decom start myminio/ http://localhost:9000/tmp/xl/{1...10}/disk{0...1}
count=0
until $(./mc admin decom status myminio/ | grep -q Complete); do
echo "waiting for decom to finish..."
count=$((count + 1))
if [ ${count} -eq 120 ]; then
./mc cat /tmp/expanded_*.log
fi
sleep 1
done
kill $pid_1
kill $pid_2
sleep 5
(minio server --address ":9001" http://localhost:9001/tmp/xl/{11...30}/disk{0...3} 2>&1 >/tmp/removed.log) &
pid=$!
sleep 30
export MC_HOST_myminio="http://minioadmin:minioadmin@localhost:9001/"
decom_user_count=$(./mc admin user list myminio/ | wc -l)
decom_policy_count=$(./mc admin policy list myminio/ | wc -l)
if [ $user_count -ne $decom_user_count ]; then
echo "BUG: original user count differs after decommission"
exit 1
fi
if [ $policy_count -ne $decom_policy_count ]; then
echo "BUG: original policy count differs after decommission"
exit 1
fi
./mc version info myminio/versioned | grep -q "versioning is enabled"
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected versioning enabled after decommission"
exit 1
fi
./mc ls -r myminio/versioned >decommissioned_ns.txt
./mc ls -r --versions myminio/versioned >decommissioned_ns_versions.txt
out=$(diff -qpruN expanded_ns.txt decommissioned_ns.txt)
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected no missing entries after decommission: $out"
exit 1
fi
out=$(diff -qpruN expanded_ns_versions.txt decommissioned_ns_versions.txt)
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected no missing entries after decommission: $out"
exit 1
fi
got_checksum=$(./mc cat myminio/versioned/dsync/drwmutex.go | md5sum)
if [ "${expected_checksum}" != "${got_checksum}" ]; then
echo "BUG: decommission failed on encrypted objects: expected ${expected_checksum} got ${got_checksum}"
exit 1
fi
# after decommissioning, compare listings in bucket2 and tiered
./mc version info myminio/bucket2 | grep -q "versioning is enabled"
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected versioning enabled after decommission on bucket2"
exit 1
fi
./mc ls -r myminio/bucket2 >decommissioned_bucket2_ns.txt
./mc ls -r --versions myminio/bucket2 >decommissioned_bucket2_ns_versions.txt
./mc ls -r --versions mytier/tiered/ >tiered_ns_versions2.txt
out=$(diff -qpruN bucket2_ns.txt decommissioned_bucket2_ns.txt)
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected no missing entries after decommission in bucket2: $out"
exit 1
fi
out=$(diff -qpruN bucket2_ns_versions.txt decommissioned_bucket2_ns_versions.txt)
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected no missing entries after decommission in bucket2x: $out"
exit 1
fi
out=$(diff -qpruN tiered_ns_versions.txt tiered_ns_versions2.txt)
ret=$?
if [ $ret -ne 0 ]; then
echo "BUG: expected no missing entries after decommission in warm tier: $out"
exit 1
fi
got_checksum=$(./mc cat myminio/bucket2/dsync/drwmutex.go | md5sum)
if [ "${expected_checksum}" != "${got_checksum}" ]; then
echo "BUG: decommission failed on encrypted objects with tiering: expected ${expected_checksum} got ${got_checksum}"
exit 1
fi
go install -v github.com/minio/minio/docs/debugging/s3-check-md5@latest
s3-check-md5 -versions -access-key minioadmin -secret-key minioadmin -endpoint http://127.0.0.1:9001/ -bucket bucket2
s3-check-md5 -versions -access-key minioadmin -secret-key minioadmin -endpoint http://127.0.0.1:9001/ -bucket versioned
kill $pid