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MDEV-24097 node restart overlaps with earlier still ongoing SST process

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In galera_3nodes.galera_safe_to_bootstrap node restart can happen too soon, when earlier SST joiner process is still active in the node.
Similar issue may hurt other mtr tests as well.

This is second variant of fix for this issue. Here we only change rsync SST script to wait a little bit if lingering SST rsync is observed to be in execution.
We assume that the previous mysqld and SST processes have been already signaled to abort during earlier stataup attempt.

If other SST methods (than rsync) suffer from similar overlapping SST execution, they should be sorted out separately within each SST method handler scripts.

Reviewed-by: Jan Lindström <jan.lindstrom@mariadb.com>
This commit is contained in:
sjaakola
2020-11-18 17:47:39 +02:00
committed by Jan Lindström
parent fe56e0e342
commit fa6d710b85
1 changed files with 8 additions and 0 deletions
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8
scripts/wsrep_sst_rsync.sh
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@ -398,6 +398,14 @@ then
MODULE="rsync_sst"
RSYNC_PID="$WSREP_SST_OPT_DATA/$MODULE.pid"
# give some time for lingering rsync from previous SST to complete
check_round=0
while check_pid $RSYNC_PID && [ $check_round -lt 10 ]
do
wsrep_log_info "lingering rsync daemon found at startup, waiting for it to exit"
check_round=$(( check_round + 1 ))
sleep 1
done
if check_pid $RSYNC_PID
then