projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 20effc67 TL |
1 | #!/bin/bash |
| 2 | # https://tracker.ceph.com/issues/47839 | |
| 3 | # Signed-off-by: Chris Dunlop <chris@onthe.net.au> | |
| 4 | ||
| 5 | ||
| 6 | ###################################################################### | |
| 7 | function usage | |
| 8 | { | |
| 9 | cat <<END | |
| 10 | Usage: $0 osd device | |
| 11 | ||
| 12 | Description: | |
| 13 | ||
| 14 | Migrate an OSD from Filestore to BlueStore | |
| 15 | ||
| 16 | Where: | |
| 17 | ||
| 18 | osd - OSD ID to migrate | |
| 19 | device - raw device to migrate to, starting with /dev/disk/by-id/ | |
| 20 | ||
| 21 | E.g.: | |
| 22 | ||
| 23 | ceph-migrate-bluestore 6 /dev/disk/by-id/ata-WDC_WD80EFZX-68UW8N0_VK0RKXTY | |
| 24 | ||
| 25 | END | |
| 26 | exit 0 | |
| 27 | } | |
| 28 | ###################################################################### | |
| 29 | ||
| 30 | shopt -s -o errexit nounset pipefail | |
| 31 | shopt -s extglob failglob inherit_errexit lastpipe | |
| 32 | ||
| 33 | [[ $# -eq 2 ]] || usage | |
| 34 | osd=$1 | |
| 35 | bluestore_device=$2 | |
| 36 | ||
| 37 | [[ $osd =~ ^[0-9]+$ ]] || error 'osd must be numeric' | |
| 38 | [[ | |
| 39 | -b $bluestore_device && | |
| 40 | $bluestore_device =~ ^/dev/disk/by-id/ && | |
| 41 | ! $bluestore_device =~ -part[0-9]+$ | |
| 42 | ]] || error "device must be a raw block device starting with /dev/disk/by-id/" | |
| 43 | ||
| 44 | ###################################################################### | |
| 45 | # Setup... | |
| 46 | # | |
| 47 | ||
| 48 | # | |
| 49 | # VG used for block.db LVs | |
| 50 | # | |
| 51 | vgdb='vg-861d7200-578c-45c2-a44c-2f0c56427bf1' | |
| 52 | vgs "${vgdb}" >& /dev/null || error "VG '${vgdb}' for block.db not found" | |
| 53 | ||
| 54 | # | |
| 55 | # Size of LV in $vgdb for the block.db | |
| 56 | # | |
| 57 | dblvsize=60G | |
| 58 | ||
| 59 | # | |
| 60 | # Prefix used for block LVs | |
| 61 | # | |
| 62 | block_prefix='osd-block' | |
| 63 | ||
| 64 | # | |
| 65 | # Some less(?) common we use - abort early if they're missing | |
| 66 | # | |
| 67 | cmds=( | |
| 68 | bc | |
| 69 | sgdisk | |
| 70 | ) | |
| 71 | ||
| 72 | ###################################################################### | |
| 73 | # Functions... | |
| 74 | # | |
| 75 | function runcmd | |
| 76 | { | |
| 77 | local IFS=' ' | |
| 78 | echo 1>&2 "$*" | |
| 79 | "$@" | |
| 80 | } | |
| 81 | ||
| 82 | function is_uuid | |
| 83 | { | |
| 84 | [[ $1 =~ ^[[:xdigit:]]{8}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{4}-[[:xdigit:]]{12}$ ]] | |
| 85 | } | |
| 86 | ||
| 87 | # | |
| 88 | # Compare the used size of the OSD with the new device | |
| 89 | # (and arbitrarily 20% larger 'cos we don't want to fill it up) | |
| 90 | # | |
| 91 | function check-device-size | |
| 92 | { | |
| 93 | # "ceph osd df" fields 7 and 8 - "RAW USE", size and units | |
| 94 | IFS=' ' read -r sz units <<< "$(ceph osd df | awk -v"id=${osd}" '$1==id { print $7, $8 }')" | |
| 95 | case $units in | |
| 96 | KiB) pow=1 ;; | |
| 97 | MiB) pow=2 ;; | |
| 98 | GiB) pow=3 ;; | |
| 99 | TiB) pow=4 ;; | |
| 100 | PiB) pow=5 ;; | |
| 101 | *) error "ceph df: units not recognized: ${units}" ;; | |
| 102 | esac | |
| 103 | osdbytes=$(printf '%.0f' "$(bc <<< "${sz} * 1024^${pow} * 1.2")") | |
| 104 | ||
| 105 | bdev=$(realpath "${bluestore_device}") | |
| 106 | bdev=${bdev##*/} | |
| 107 | [[ -e /sys/block/${bdev##*/}/size ]] || error "Can't find size for ${bluestore_device}" | |
| 108 | bdevbytes=$(($(<"/sys/block/${bdev##*/}/size") * 512)) | |
| 109 | ||
| 110 | declare -p osdbytes bdevbytes | |
| 111 | ||
| 112 | ((bdevbytes >= osdbytes)) || error "The block device isn't large enough" | |
| 113 | } | |
| 114 | ||
| 115 | # | |
| 116 | # Check things look ok | |
| 117 | # | |
| 118 | # Is there a better way of checking, other than manually? | |
| 119 | # | |
| 120 | function check-ceph-ok | |
| 121 | { | |
| 122 | local ans=r | |
| 123 | ||
| 124 | while [[ $ans = r ]] | |
| 125 | do | |
| 126 | runcmd ceph -s | |
| 127 | read -r -p $'\nCheck status above and press r to recheck or <Enter> to continue with scrub' ans | |
| 128 | done | |
| 129 | ||
| 130 | # | |
| 131 | # Run a scrub "to be sure, to be sure" | |
| 132 | # | |
| 133 | # For smaller OSDs we can see which PGs we need to watch for... | |
| 134 | # | |
| 135 | runcmd ceph pg ls-by-primary "${osd}" | awk '$1~/^[0-9]+\./ { print $1 }' | |
| 136 | runcmd ceph osd scrub "${osd}" | |
| 137 | ||
| 138 | hr | |
| 139 | tail -n0 -f "/var/log/ceph/ceph-osd.${osd}.log" & | |
| 140 | pid=$! | |
| 141 | sleep 2 | |
| 142 | while ! read -r -t 10 -p $'\n\n\ntailing osd log file: press <Enter> to continue\n\n\n' ans | |
| 143 | do | |
| 144 | : | |
| 145 | done | |
| 146 | kill "${pid}" | |
| 147 | hr | |
| 148 | ||
| 149 | ans=r | |
| 150 | while [[ $ans = r ]] | |
| 151 | do | |
| 152 | runcmd ceph -s | |
| 153 | read -r -p $'\nCheck status above and press r to recheck or <Enter> to continue' ans | |
| 154 | done | |
| 155 | } | |
| 156 | ||
| 157 | # | |
| 158 | # Disable the FileStore so it doesn't attempt to come back on reboot, but | |
| 159 | # so we can revert back to it if necessary | |
| 160 | # | |
| 161 | # https://en.wikipedia.org/wiki/GUID_Partition_Table#Partition_type_GUIDs | |
| 162 | # Partition GUID code: 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D (Ceph OSD) | |
| 163 | # Partition GUID code: 0FC63DAF-8483-4772-8E79-3D69D8477DE4 (Linux filesystem data) | |
| 164 | # | |
| 165 | function disable-filestore | |
| 166 | { | |
| 167 | # | |
| 168 | # Remove the original device from fstab if it's there | |
| 169 | # (it may be in here for xfs with logdev etc.) | |
| 170 | # | |
| 171 | if grep -qE '^[^#[:space:]]+[[:space:]]+'"${osddir}"'[[:space:]]' /etc/fstab | |
| 172 | then | |
| 173 | [[ -e /etc/fstab.${0##*/} ]] || cp -a /etc/fstab{,."${0##*/}"} | |
| 174 | sed -ri '/^[^#[:space:]]+[[:space:]]+'"${osddir//\//\\\/}"'[[:space:]]/ s/^/# /' /etc/fstab | |
| 175 | fi | |
| 176 | ||
| 177 | # | |
| 178 | # Change the partition type | |
| 179 | # | |
| 180 | [[ -e ${osd_json%.json}.part ]] || | |
| 181 | runcmd sgdisk --backup="${osd_json%.json}.part" "${filestore_device}" | |
| 182 | part_guid=$(sgdisk -i1 "${filestore_device}" | sed -rn 's/^Partition GUID code: ([[:xdigit:]-]+) .*/\1/p') | |
| 183 | if [[ $part_guid = 4FBD7E29-9D25-41B8-AFD0-062C0CEFF05D ]] | |
| 184 | then | |
| 185 | runcmd sgdisk --typecode=1:0FC63DAF-8483-4772-8E79-3D69D8477DE4 "${filestore_device}" | |
| 186 | echo "${filestore_device} partition 1 changed to type 0FC63DAF-8483-4772-8E79-3D69D8477DE4 (Linux filesystem data)" | |
| 187 | fi | |
| 188 | } | |
| 189 | ||
| 190 | ###################################################################### | |
| 191 | # Processing... | |
| 192 | # | |
| 193 | ||
| 194 | # | |
| 195 | # Check we have the commands we need | |
| 196 | # | |
| 197 | for cmd in "${cmds[@]}" | |
| 198 | do | |
| 199 | type "${cmd}" >& /dev/null || error "${cmd} utility required" | |
| 200 | done | |
| 201 | ||
| 202 | # | |
| 203 | # Get/check OSD | |
| 204 | # | |
| 205 | unit=ceph-osd@${osd} | |
| 206 | runcmd systemctl is-enabled "${unit}" || | |
| 207 | error "systemd unit ${unit} not enabled" | |
| 208 | ||
| 209 | osddir=/var/lib/ceph/osd/ceph-${osd} | |
| 210 | [[ -d $osddir ]] || error "No directory: ${osddir}" | |
| 211 | ||
| 212 | fsid=$(< "${osddir}/fsid") | |
| 213 | is_uuid "${fsid}" || error "fsid uuid not found in ${osddir}/fsid" | |
| 214 | ||
| 215 | osd_json=/etc/ceph/osd/${osd}-${fsid}.json | |
| 216 | [[ -f $osd_json ]] || error "File doesn't exist: ${osd_json}" | |
| 217 | ||
| 218 | lvnewdb=${vgdb}/osd-db-${fsid} | |
| 219 | authkey=$(sed -rn 's/^[[:space:]]+key[[:space:]]*=[[:space:]]*//p' "${osddir}/keyring") | |
| 220 | [[ $authkey ]] || error "Can't get authkey from ${osddir}/keyring" | |
| 221 | ||
| 222 | # | |
| 223 | # We want the device containing the FileStore version of the OSD | |
| 224 | # so we can disable it once the BlueStore version is up and running, | |
| 225 | # so the FileStore doesn't contend with the BlueStore on reboot etc. | |
| 226 | # | |
| 227 | filestore_device=$(awk '$2=="'"${osddir}"'" { print $1; }' /etc/mtab) | |
| 228 | [[ $filestore_device ]] || error "Can't find device currently mounted on ${osddir}" | |
| 229 | [[ $filestore_device =~ ^/dev/sd[a-z]+[0-9]*$ ]] || error "Don't recognize device currently mounted on ${osddir}: ${filestore_device}" | |
| 230 | filestore_device=${filestore_device%%+([0-9])} | |
| 231 | ||
| 232 | declare -p unit block_prefix bluestore_device osd osddir fsid osd_json lvnewdb authkey filestore_device | |
| 233 | ||
| 234 | runcmd check-device-size | |
| 235 | ||
| 236 | # | |
| 237 | # Create raw LV for block.db | |
| 238 | # | |
| 239 | runcmd lvcreate --yes -L "${dblvsize}" -n "${lvnewdb#*/}" "${lvnewdb%/*}" | |
| 240 | ||
| 241 | ||
| 242 | # | |
| 243 | # Prepare the new OSD | |
| 244 | # osd-list.orig is so we can work out which osd was created | |
| 245 | # | |
| 246 | ceph osd ls > /tmp/osd-list.orig | |
| 247 | runcmd ceph-volume lvm prepare --data "${bluestore_device}" --block.db "${lvnewdb}" | |
| 248 | ||
| 249 | # | |
| 250 | # Work out which OSD has been created | |
| 251 | # Is there a better way of doing this? | |
| 252 | # | |
| 253 | ceph osd ls > /tmp/osd-list.new | |
| 254 | ||
| 255 | new=$(comm -13 /tmp/osd-list.{orig,new}) | |
| 256 | [[ $new =~ ^[0-9]+$ ]] || error "New OSD id not found" | |
| 257 | ||
| 258 | # | |
| 259 | # remove the new OSD from the ceph database | |
| 260 | # (it's left mounted) | |
| 261 | # | |
| 262 | runcmd ceph osd purge "${new}" --yes-i-really-mean-it | |
| 263 | ||
| 264 | # | |
| 265 | # Params for the newly created OSD | |
| 266 | # | |
| 267 | newdir=/var/lib/ceph/osd/ceph-${new} | |
| 268 | lvnew=$(readlink "${newdir}/block"); lvnew=${lvnew#/dev/} | |
| 269 | ||
| 270 | # | |
| 271 | # lvfix is what we're going to rename the LV to so | |
| 272 | # it ends in the (original) fsid | |
| 273 | # | |
| 274 | is_uuid "${lvnew#*/${block_prefix}-}" || error "LV not recognised: ${lvnew}" | |
| 275 | lvfix=${lvnew%%/*}/${block_prefix}-${fsid} | |
| 276 | ||
| 277 | declare -p new newdir lvnew lvfix | |
| 278 | ||
| 279 | # | |
| 280 | # the "dup" step only works if the destination has the same id and fsid | |
| 281 | # as the source: fix 'em up | |
| 282 | # | |
| 283 | new_fsid=$(< "${newdir}/fsid") | |
| 284 | args=( | |
| 285 | --deltag "ceph.osd_id=${new}" | |
| 286 | --addtag "ceph.osd_id=${osd}" | |
| 287 | ||
| 288 | --deltag "ceph.osd_fsid=${new_fsid}" | |
| 289 | --addtag "ceph.osd_fsid=${fsid}" | |
| 290 | ||
| 291 | --deltag "ceph.block_device=${lvnew}" | |
| 292 | --addtag "ceph.block_device=${lvfix}" | |
| 293 | ) | |
| 294 | runcmd lvchange "${args[@]}" "${lvnew}" | |
| 295 | runcmd lvchange "${args[@]}" "${lvnewdb}" | |
| 296 | ||
| 297 | runcmd ceph-bluestore-tool set-label-key --dev "${newdir}/block" --key whoami --value "${osd}" | |
| 298 | runcmd ceph-bluestore-tool set-label-key --dev "${newdir}/block" --key osd_uuid --value "${fsid}" | |
| 299 | runcmd ceph-bluestore-tool set-label-key --dev "${newdir}/block.db" --key osd_uuid --value "${fsid}" | |
| 300 | ||
| 301 | echo "${fsid}" > "${newdir}/fsid" | |
| 302 | ||
| 303 | # | |
| 304 | # Rename the LV so it ends in the (original) fsid | |
| 305 | # | |
| 306 | runcmd lvrename "${lvnew}" "${lvfix}" | |
| 307 | runcmd ln -sf "/dev/${lvfix}" "${newdir}/block" | |
| 308 | lvnew=$lvfix | |
| 309 | ||
| 310 | # | |
| 311 | # Remove the flags that mkfs has already been done - otherwise mkfs skips the actual mkfs! | |
| 312 | # | |
| 313 | runcmd ceph-bluestore-tool rm-label-key --dev "${newdir}/block" --key mkfs_done | |
| 314 | runcmd rm "${newdir}/mkfs_done" | |
| 315 | ||
| 316 | # | |
| 317 | # Empty out the new OSD filesystem | |
| 318 | # | |
| 319 | runcmd ceph-objectstore-tool --type bluestore --data-path "${newdir}" --fsid "${fsid}" --op mkfs --no-mon-config | |
| 320 | ||
| 321 | # | |
| 322 | # Stop the osd - the copy can't proceed if it's busy | |
| 323 | # | |
| 324 | runcmd systemctl is-active --quiet "ceph-osd@${osd}" && | |
| 325 | runcmd systemctl stop "ceph-osd@${osd}" | |
| 326 | ||
| 327 | # | |
| 328 | # The actual copy... | |
| 329 | # | |
| 330 | runcmd time ceph-objectstore-tool --type filestore --data-path "/var/lib/ceph/osd/ceph-${osd}" --target-data-path "${newdir}" --op dup | |
| 331 | ||
| 332 | # | |
| 333 | # Fix up some keys from the copy | |
| 334 | # | |
| 335 | printf '[osd.%d]\n\tkey = %s\n' "${osd}" "${authkey}" > "${newdir}/key" | |
| 336 | ceph-bluestore-tool set-label-key --dev "${newdir}/block" --key osd_key --value "${authkey}" | |
| 337 | ceph-bluestore-tool rm-label-key --dev "${newdir}/block" --key fsid | |
| 338 | ||
| 339 | # | |
| 340 | # Move the FileStore config file out of the way to avoid it being used on boot | |
| 341 | # | |
| 342 | runcmd mv "${osd_json}"{,.orig} | |
| 343 | ||
| 344 | # | |
| 345 | # prepare the mount points | |
| 346 | # | |
| 347 | runcmd umount "${osddir}" | |
| 348 | runcmd umount "${newdir}" | |
| 349 | runcmd rmdir "${newdir}" | |
| 350 | ||
| 351 | # | |
| 352 | # Start the new BlueStore version of the OSD | |
| 353 | # | |
| 354 | runcmd ceph-volume lvm trigger "${osd}-${fsid}" | |
| 355 | ||
| 356 | # | |
| 357 | # Let things settle a little then check the new OSD is running | |
| 358 | # | |
| 359 | sleep 5 | |
| 360 | if ! systemctl is-active --quiet "${unit}" | |
| 361 | then | |
| 362 | systemctl status "${unit}" | |
| 363 | exit 1 | |
| 364 | fi | |
| 365 | ||
| 366 | runcmd check-ceph-ok | |
| 367 | ||
| 368 | runcmd disable-filestore | |
| 369 | ||
| 370 | exit 0 |