vstart: use here document to define usage

for better readability

Signed-off-by: Kefu Chai <kchai@redhat.com>

diff --git a/src/vstart.sh b/src/vstart.sh
index 59dbf62b4b62c20c8e4250dc90dfc42251360d88..c8bc25cf8efc9e5df0f1ba37a54613f712d0e552 100755 (executable)
--- a/src/vstart.sh
+++ b/src/vstart.sh
@@ -194,53 +194,55 @@ inc_osd_num=0
 
 msgr="21"
 
-usage="usage: $0 [option]... \nex: MON=3 OSD=1 MDS=1 MGR=1 RGW=1 NFS=1 $0 -n -d\n"
-usage=$usage"options:\n"
-usage=$usage"\t-d, --debug\n"
-usage=$usage"\t-s, --standby_mds: Generate standby-replay MDS for each active\n"
-usage=$usage"\t-l, --localhost: use localhost instead of hostname\n"
-usage=$usage"\t-i <ip>: bind to specific ip\n"
-usage=$usage"\t-n, --new\n"
-usage=$usage"\t--valgrind[_{osd,mds,mon,rgw}] 'toolname args...'\n"
-usage=$usage"\t--nodaemon: use ceph-run as wrapper for mon/osd/mds\n"
-usage=$usage"\t--redirect-output: only useful with nodaemon, directs output to log file\n"
-usage=$usage"\t--smallmds: limit mds cache memory limit\n"
-usage=$usage"\t-m ip:port\t\tspecify monitor address\n"
-usage=$usage"\t-k keep old configuration files (default)\n"
-usage=$usage"\t-x enable cephx (on by default)\n"
-usage=$usage"\t-X disable cephx\n"
-usage=$usage"\t-g --gssapi enable Kerberos/GSSApi authentication\n"
-usage=$usage"\t-G disable Kerberos/GSSApi authentication\n"
-usage=$usage"\t--hitset <pool> <hit_set_type>: enable hitset tracking\n"
-usage=$usage"\t-e : create an erasure pool\n";
-usage=$usage"\t-o config\t\t add extra config parameters to all sections\n"
-usage=$usage"\t--rgw_port specify ceph rgw http listen port\n"
-usage=$usage"\t--rgw_frontend specify the rgw frontend configuration\n"
-usage=$usage"\t--rgw_compression specify the rgw compression plugin\n"
-usage=$usage"\t--seastore use seastore as crimson osd backend\n"
-usage=$usage"\t-b, --bluestore use bluestore as the osd objectstore backend (default)\n"
-usage=$usage"\t-f, --filestore use filestore as the osd objectstore backend\n"
-usage=$usage"\t-K, --kstore use kstore as the osd objectstore backend\n"
-usage=$usage"\t--memstore use memstore as the osd objectstore backend\n"
-usage=$usage"\t--cache <pool>: enable cache tiering on pool\n"
-usage=$usage"\t--short: short object names only; necessary for ext4 dev\n"
-usage=$usage"\t--nolockdep disable lockdep\n"
-usage=$usage"\t--multimds <count> allow multimds with maximum active count\n"
-usage=$usage"\t--without-dashboard: do not run using mgr dashboard\n"
-usage=$usage"\t--bluestore-spdk: enable SPDK and with a comma-delimited list of PCI-IDs of NVME device (e.g, 0000:81:00.0)\n"
-usage=$usage"\t--msgr1: use msgr1 only\n"
-usage=$usage"\t--msgr2: use msgr2 only\n"
-usage=$usage"\t--msgr21: use msgr2 and msgr1\n"
-usage=$usage"\t--crimson: use crimson-osd instead of ceph-osd\n"
-usage=$usage"\t--osd-args: specify any extra osd specific options\n"
-usage=$usage"\t--bluestore-devs: comma-separated list of blockdevs to use for bluestore\n"
-usage=$usage"\t--bluestore-zoned: blockdevs listed by --bluestore-devs are zoned devices (HM-SMR HDD or ZNS SSD)\n"
-usage=$usage"\t--bluestore-io-uring: enable io_uring backend\n"
-usage=$usage"\t--inc-osd: append some more osds into existing vcluster\n"
-usage=$usage"\t--cephadm: enable cephadm orchestrator with ~/.ssh/id_rsa[.pub]\n"
-usage=$usage"\t--no-parallel: dont start all OSDs in parallel\n"
-usage=$usage"\t--jaeger: use jaegertracing for tracing\n"
-usage=$usage"\t--seastore-devs: comma-separated list of blockdevs to use for seastore\n"
+read -r -d '' usage <<EOF || true
+usage: $0 [option]... \nex: MON=3 OSD=1 MDS=1 MGR=1 RGW=1 NFS=1 $0 -n -d
+options:
+       -d, --debug
+       -s, --standby_mds: Generate standby-replay MDS for each active
+       -l, --localhost: use localhost instead of hostname
+       -i <ip>: bind to specific ip
+       -n, --new
+       --valgrind[_{osd,mds,mon,rgw}] 'toolname args...'
+       --nodaemon: use ceph-run as wrapper for mon/osd/mds
+       --redirect-output: only useful with nodaemon, directs output to log file
+       --smallmds: limit mds cache memory limit
+       -m ip:port              specify monitor address
+       -k keep old configuration files (default)
+       -x enable cephx (on by default)
+       -X disable cephx
+       -g --gssapi enable Kerberos/GSSApi authentication
+       -G disable Kerberos/GSSApi authentication
+       --hitset <pool> <hit_set_type>: enable hitset tracking
+       -e : create an erasure pool\
+       -o config                add extra config parameters to all sections
+       --rgw_port specify ceph rgw http listen port
+       --rgw_frontend specify the rgw frontend configuration
+       --rgw_compression specify the rgw compression plugin
+       --seastore use seastore as crimson osd backend
+       -b, --bluestore use bluestore as the osd objectstore backend (default)
+       -f, --filestore use filestore as the osd objectstore backend
+       -K, --kstore use kstore as the osd objectstore backend
+       --memstore use memstore as the osd objectstore backend
+       --cache <pool>: enable cache tiering on pool
+       --short: short object names only; necessary for ext4 dev
+       --nolockdep disable lockdep
+       --multimds <count> allow multimds with maximum active count
+       --without-dashboard: do not run using mgr dashboard
+       --bluestore-spdk: enable SPDK and with a comma-delimited list of PCI-IDs of NVME device (e.g, 0000:81:00.0)
+       --msgr1: use msgr1 only
+       --msgr2: use msgr2 only
+       --msgr21: use msgr2 and msgr1
+       --crimson: use crimson-osd instead of ceph-osd
+       --osd-args: specify any extra osd specific options
+       --bluestore-devs: comma-separated list of blockdevs to use for bluestore
+       --bluestore-zoned: blockdevs listed by --bluestore-devs are zoned devices (HM-SMR HDD or ZNS SSD)
+       --bluestore-io-uring: enable io_uring backend
+       --inc-osd: append some more osds into existing vcluster
+       --cephadm: enable cephadm orchestrator with ~/.ssh/id_rsa[.pub]
+       --no-parallel: dont start all OSDs in parallel
+       --jaeger: use jaegertracing for tracing
+       --seastore-devs: comma-separated list of blockdevs to use for seastore
+EOF
 
 usage_exit() {
     printf "$usage"