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LTO9-Optimizer
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This commit is contained in:
Massimo Scagliola 2023-07-05 09:50:05 +02:00
parent 726f00104b
commit c0e6c15da4
1 changed files with 12 additions and 10 deletions
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22
optimizer.sh
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@ -2,7 +2,7 @@
###
### Usage: ./optimizer.sh </dev/sgX> <parallelism>
###
### -h | --help Shows this message
### -h | --help Shows this message
###
### optimizer.sh
### Necessary parameters:
@ -10,10 +10,12 @@
### - parallelism
###
### The script checks the parallelism with the available drives of the library/partition, then
### proceeds with loading *all* the tapes in the slots. Mailboxes are ignored.
### proceeds with loading *all* the tapes found in the slots. Mailboxes are ignored.
### It launches several child processes. The `timeout` command tries to unload the drives,
### it succeeds when the the tape optimization is done.
###
### Kill switch to stop the running processes: `killall optimizer.sh`
###
help() {
@ -36,12 +38,12 @@ alive() {
echo "${4}" > "${TMP}/.drive${3}.lock"
local PID_ALIVE='1'
local WAIT=$((3600 + $RANDOM % 7200)) # from 1 to 2 hours
local TIMEOUT="600" #10 minuti wait before dismounting the tape
local TIMEOUT="600" # 10 minutes wait before dismounting the tape
while [ $PID_ALIVE -eq 1 ]; do
log "ALIVE [$$] - Waiting ${WAIT} secondi..."
sleep "${WAIT}"
log "ALIVE [$$] - Trying to unload drive ${3} into slot ${2} (Timeout: ${TIMEOUT} seconds)..."
timeout "${TIMEOUT}" mtx -f "${1}" unload "${2}" "${3}" #kill after ${TIMEOUT} seconds
timeout "${TIMEOUT}" mtx -f "${1}" unload "${2}" "${3}" # Kill after ${TIMEOUT} seconds
if [[ $(echo $?) == '0' ]]; then
log "ALIVE [$$] - OK. Drive ${3} unloaded."
grep -q "$4;drive$3;WIP" "${PROCESSED_BARCODES}" # Check if barcode is WIP
@ -52,11 +54,11 @@ alive() {
touch "${TMP}/.drive${3}.ready"
log "ALIVE [$$] - Drive ${3} newly available. Exit."
local PID_ALIVE='0'
return 0 # Fine Alive
return 0 # End Alive
else
log "ALIVE [$$] - ERROR. Can't find the barcode among the WIP. Exit."
return 1
fi # Barcode processato --> OK
fi # Barcode processed --> OK
elif [ -f "${TMP}/.drive${3}.lock" ]; then # Drive in use
log "ALIVE [$$] - Unmount drive ${3} failed, still in use (file .lock). Checking the content."
grep -q "${4}" "${TMP}/.drive${3}.lock"
@ -134,13 +136,13 @@ while [ $COUNT -le $(cat ${SLOTS_FULL} | wc -l) ]; do
if [[ "${RUNNING}" -lt "${PARALLELISM}" ]]; then
SLOT=$(sed "${COUNT}q;d" ${SLOTS_FULL} | awk '{print $3;}' | cut -d ':' -f 1)
BARCODE=$(sed "${COUNT}q;d" ${SLOTS_FULL} | awk '{print $4;}' | cut -d '=' -f 2)
grep -q "${SLOT}" "${PROCESSED_SLOTS}" #Controllo che lo slot non sia stato già processato
grep -q "${SLOT}" "${PROCESSED_SLOTS}" # Check if slot is aready processed
if [[ $(echo $?) == '0' ]]; then
echo "Slot ${SLOT} already processed."
((COUNT++))
continue
fi
grep -q "${BARCODE};OK" "${PROCESSED_BARCODES}" #Controllo che il barcode non sia già stato processato
grep -q "${BARCODE};OK" "${PROCESSED_BARCODES}" # Check if barcode is already processed
if [[ $(echo $?) == '0' ]]; then
echo "Barcode ${BARCODE} already processed. Skip."
((COUNT++))
@ -148,13 +150,13 @@ while [ $COUNT -le $(cat ${SLOTS_FULL} | wc -l) ]; do
fi
log "### SLOT ${SLOT} - BARCODE ${BARCODE}"
for (( i = 0 ; i < ${PARALLELISM} ; i++ )); do # Look for an available drive
if [ -f "${TMP}/.drive${i}.ready" ]; then # Look for "ready" file
if [ -f "${TMP}/.drive${i}.ready" ]; then # Look for ".ready" file
DRIVE=${i}
mv "${TMP}/.drive${DRIVE}.ready" "${TMP}/.drive${DRIVE}.lock"
break
fi
done
log "Load slot ${SLOT} into drive ${DRIVE}."
log "Loading slot ${SLOT} into drive ${DRIVE}."
mtx -f "${LIB_SG}" load "${SLOT}" "${DRIVE}"
echo "${BARCODE};drive${DRIVE};WIP" >> "${PROCESSED_BARCODES}" # Barcode WIP
echo ${SLOT} >> "${PROCESSED_SLOTS}"