DAOS Tour
- Ding-hwa Ho
- Craig Durfey (Deactivated)
Owned by Ding-hwa Ho
NOTE THESE ARE NOT TO BE APPLIED TO 2.0 TESTING, USE THE QUICKSTARTS IN THE 2.0 ON-LINE DOCUMENTATION
Table of Contents
Introduction
This documentation provides a general tour to DAOS management commands (dmg) for daos_admin, and DAOS tools (daos) for daos_client users. Provides help with pool and container create, list, query and destroy on DAOS server for daos_admin and daos_client users. Some frequent common errors and workarounds for new users when using the dmg and daos tools. Example runs of data transfer between DAOS file systems, by setting up of DAOS dfuse mount point and run traffic with dfuse fio and mpirun mdtest. Example of basic dmg and daos tools runs on 2 hosts DAOS server and 1 host client, runs of DAOS rebuild over dfuse fio and mpirun mdtest on a 4 hosts DAOS server.
Requirements
Set environment variables for list of servers, client and admin node.
# Example of 2 hosts server # For 1 host server, export SERVER_NODES=node-1 export SERVER_NODES=node-1,node-2 # Example to use admin and client on the same node export ADMIN_NODE=node-3 export CLIENT_NODE=node-3 export ALL_NODES=$SERVER_NODES,$CLIENT_NODE
Set-Up
Please reference to DAOS server(s) and client(s) DAOS Set-Up for RPM installation, daos server/agent/admin configuration yml files, certificates generation, and bring-up daos servers and clients.
DAOS management tool (dmg) usage for daos_admin
dmg tool help
# DAOS management tool full path /usr/bin/dmg
$ dmg --help
Usage:
dmg [OPTIONS] <command>
Application Options:
--allow-proxy Allow proxy configuration via environment
-l, --host-list= comma separated list of addresses <ipv4addr/hostname>
-i, --insecure have dmg attempt to connect without certificates
-d, --debug enable debug output
-j, --json Enable JSON output
-J, --json-logging Enable JSON-formatted log output
-o, --config-path= Client config file path
Help Options:
-h, --help Show this help message
Available commands:
config Perform tasks related to configuration of hardware remote servers (aliases: co)
cont Perform tasks related to DAOS containers (aliases: c)
network Perform tasks related to network devices attached to remote servers (aliases: n)
pool Perform tasks related to DAOS pools (aliases: p)
storage Perform tasks related to storage attached to remote servers (aliases: st)
system Perform distributed tasks related to DAOS system (aliases: sy)
telemetry Perform telemetry operations
version Print dmg version
dmg system query
# system query output for a 2 hosts DAOS server $ dmg system query Rank State ---- ----- [0-1] Joined
dmg system query verbose output
$ dmg system query --verbose (-v) Rank UUID Control Address Fault Domain State Reason ---- ---- --------------- ------------ ----- ------ 0 570660ae-1727-4ce0-9650-6c31e81c9d30 10.7.1.8:10001 /boro-8.boro.hpdd.intel.com Joined 1 74390dd0-7fbc-4309-8665-d5f24218c8d9 10.7.1.35:10001 /boro-35.boro.hpdd.intel.com Joined
dmg system query with debug
$ dmg system query --debug (-d)
DEBUG 21:17:29.765815 main.go:216: debug output enabled
DEBUG 21:17:29.766483 main.go:243: control config loaded from /etc/daos/daos_control.yml
DEBUG 21:17:29.768661 system.go:368: DAOS system query request: &{unaryRequest:{request:{deadline:{wall:0 ext:0 loc:<nil>} Sys: HostList:[]} rpc:0xc83b40} msRequest:{} sysRequest:{Ranks:{RWMutex:{w:{state:0 sema:0} writerSem:0 readerSem:0 readerCount:0 readerWait:0} HostSet:{Mutex:{state:0 sema:0} list:0xc0001909c0}} Hosts:{Mutex:{state:0 sema:0} list:0xc000190980}} retryableRequest:{retryTimeout:0 retryInterval:0 retryMaxTries:0 retryTestFn:0xc83ca0 retryFn:0xc83de0} FailOnUnavailable:false}
DEBUG 21:17:29.769332 rpc.go:196: request hosts: [boro-8:10001 boro-35:10001]
DEBUG 21:17:29.823432 system.go:200: System-Query command succeeded, absent hosts: , absent ranks:
Rank State
---- -----
[0-1] Joined
dmg storage query usage
# system storage query usage output for a 2 hosts DAOS server $ dmg storage query usage Hosts SCM-Total SCM-Free SCM-Used NVMe-Total NVMe-Free NVMe-Used ----- --------- -------- -------- ---------- --------- --------- boro-35 17 GB 17 GB 0 % 0 B 0 B N/A boro-8 17 GB 17 GB 0 % 0 B 0 B N/A
dmg pool create help
$ dmg pool create --help
Usage:
dmg [OPTIONS] pool create [create-OPTIONS]
Application Options:
--allow-proxy Allow proxy configuration via environment
-l, --host-list= comma separated list of addresses <ipv4addr/hostname>
-i, --insecure have dmg attempt to connect without certificates
-d, --debug enable debug output
-j, --json Enable JSON output
-J, --json-logging Enable JSON-formatted log output
-o, --config-path= Client config file path
Help Options:
-h, --help Show this help message
[create command options]
-g, --group= DAOS pool to be owned by given group, format name@domain
-u, --user= DAOS pool to be owned by given user, format name@domain
-p, --name= Unique name for pool (set as label)
-a, --acl-file= Access Control List file path for DAOS pool
-z, --size= Total size of DAOS pool (auto)
-t, --scm-ratio= Percentage of SCM:NVMe for pool storage (auto) (default: 6)
-k, --nranks= Number of ranks to use (auto)
-v, --nsvc= Number of pool service replicas
-s, --scm-size= Per-server SCM allocation for DAOS pool (manual)
-n, --nvme-size= Per-server NVMe allocation for DAOS pool (manual)
-r, --ranks= Storage server unique identifiers (ranks) for DAOS pool
-S, --sys= DAOS system that pool is to be a part of (default: daos_server)
dmg pool create
# Create a 10GB pool $ dmg pool create --size=10G Creating DAOS pool with automatic storage allocation: 10 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : 0a6003c6-23a7-4cb5-8895-c004ca2b75f5 Service Ranks : 0 Storage Ranks : [0-1] Total Size : 10 GB SCM : 10 GB (5.0 GB / rank) NVMe : 0 B (0 B / rank) $ dmg storage query usage Hosts SCM-Total SCM-Free SCM-Used NVMe-Total NVMe-Free NVMe-Used ----- --------- -------- -------- ---------- --------- --------- boro-35 17 GB 12 GB 29 % 0 B 0 B N/A boro-8 17 GB 11 GB 36 % 0 B 0 B N/A
dmg pool create for specified user and group
# Create a 1GB pool for user:user_1 group:admin_group1 $ dmg pool create --group=admin_group1 --user=user_1 --size=1G Creating DAOS pool with automatic storage allocation: 1.0 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : 64efd827-6bcb-434b-ab78-2010984539ff Service Ranks : 0 Storage Ranks : 0 Total Size : 1.0 GB SCM : 1.0 GB (1.0 GB / rank) NVMe : 0 B (0 B / rank)
dmg pool create with security setting
# Create a pool with access-control via a access-list test file $ dmg pool create --size=1G --acl-file=/tmp/acl_test.txt Creating DAOS pool with automatic storage allocation: 1.0 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : 4533f724-7234-4c70-946c-b7a53d7d0ddf Service Ranks : 0 Storage Ranks : 0 Total Size : 1.0 GB SCM : 1.0 GB (1.0 GB / rank) NVMe : 0 B (0 B / rank) # Example of access entries on /tmp/acl_test.txt # pool OWNER: read-write permission # pool owner GROUP: read-write permission # test_user1: write-only permission # test_user2: read-only permission # test_group1: write-only permission # test_group2: read-only permission # EVERYONE else: no permission A::OWNER@:rw A:G:GROUP@:rw A::test_user1@:w A::test_user2@:r A:G:test_group1@:w A:G:test_group2@:r A::EVERYONE@: # Get pool security acl $ dmg pool get-acl --pool=$DAOS_POOL # Entries: A::OWNER@:rw A::test_user1@:w A::test_user2@:r A:G:GROUP@:rw A:G:test_group1@:w A:G:test_group2@:r A::EVERYONE@: # Update pool access entry for the existing test_group1 to no-permission dmg pool update-acl -e A:G:test_group1@: --pool=$DAOS_POOL # Update pool access entry for a new user test_user3 with rw permission dmg pool update-acl -e A::test_user3@:rw --pool=$DAOS_POOL # Get pool security acl after update-acl $ dmg pool get-acl --pool=$DAOS_POOL # Entries: A::OWNER@:rw A::test_user1@:w A::test_user2@:r A::test_user3@:rw A:G:GROUP@:rw A:G:test_group1@: A:G:test_group2@:r A::EVERYONE@:
dmg pool list
$ dmg pool list Pool UUID Svc Replicas --------- ------------ 5f362dc2-6154-44c7-8348-9de6f0a3d5d1 0
dmg pool destroy
$ dmg pool destroy --pool=$DAOS_POOL Pool-destroy command succeeded $ dmg pool list no pools in system $ dmg storage query usage Hosts SCM-Total SCM-Free SCM-Used NVMe-Total NVMe-Free NVMe-Used ----- --------- -------- -------- ---------- --------- --------- boro-35 17 GB 17 GB 0 % 0 B 0 B N/A boro-8 17 GB 17 GB 0 % 0 B 0 B N/A
dmg pool query
$ dmg pool create --size=10G Creating DAOS pool with automatic storage allocation: 10 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : cf860261-4fde-4403-b10b-abe8eb9dd32f Service Ranks : 0 Storage Ranks : [0-1] Total Size : 10 GB SCM : 10 GB (5.0 GB / rank) NVMe : 0 B (0 B / rank) $ dmg pool list Pool UUID Svc Replicas --------- ------------ cf860261-4fde-4403-b10b-abe8eb9dd32f 0 $ dmg pool query --pool=$DAOS_POOL Pool cf860261-4fde-4403-b10b-abe8eb9dd32f, ntarget=16, disabled=0, leader=0, version=1 Pool space info: - Target(VOS) count:16 - SCM: Total size: 10 GB Free: 10 GB, min:625 MB, max:625 MB, mean:625 MB - NVMe: Total size: 0 B Free: 0 B, min:0 B, max:0 B, mean:0 B Rebuild idle, 0 objs, 0 recs
DAOS tool (daos) usage for daos_client
daos tool help
$ /usr/bin/daos help
daos command (v1.2), libdaos 1.2.0
usage: daos RESOURCE COMMAND [OPTIONS]
resources:
pool pool
container (cont) container
filesystem (fs) copy to and from a POSIX filesystem
object (obj) object
shell Interactive obj ctl shell for DAOS
version print command version
help print this message and exit
use 'daos help RESOURCE' for resource specifics
$ daos help cont
daos command (v1.2), libdaos 1.2.0
container (cont) commands:
create create a container
clone clone a container
destroy destroy a container
list-objects list all objects in container
list-obj
query query a container
get-prop get all container's properties
set-prop set container's properties
get-acl get a container's ACL
overwrite-acl replace a container's ACL
update-acl add/modify entries in a container's ACL
delete-acl delete an entry from a container's ACL
set-owner change the user and/or group that own a container
stat get container statistics
check check objects consistency in container
list-attrs list container user-defined attributes
del-attr delete container user-defined attribute
get-attr get container user-defined attribute
set-attr set container user-defined attribute
create-snap create container snapshot (optional name)
at most recent committed epoch
list-snaps list container snapshots taken
destroy-snap destroy container snapshots
by name, epoch or range
rollback roll back container to specified snapshot
use 'daos help cont|container COMMAND' for command specific options
daos container create
$ dmg pool create --size=10G Creating DAOS pool with automatic storage allocation: 10 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : 528f4710-7eb8-4850-b6aa-09e4b3c8f532 Service Ranks : 0 Storage Ranks : 0 Total Size : 10 GB SCM : 10 GB (10 GB / rank) NVMe : 0 B (0 B / rank) $ daos cont create --pool=$DAOS_POOL Successfully created container bfef23e9-bbfa-4743-a95c-144c44078f16
daos container create with HDF5 type
# Create a HDF5 container # By default: type = POSIX $ daos cont create --type=HDF5 --pool=$DAOS_POOL Successfully created container bc4fe707-7470-4b7d-83bf-face75cc98fc
daos container create with redundancy factor
# Create a container with oclass RP_2G1, redundancy factor = 1 $ daos cont create --oclass=RP_2G1 --properties=rf:1 --pool=$DAOS_POOL Successfully created container 0d121c02-a42d-4029-8dce-3919b964b7b3
daos container list
$ daos pool list-cont --pool=$DAOS_POOL bc4fe707-7470-4b7d-83bf-face75cc98fc 0d121c02-a42d-4029-8dce-3919b964b7b3
daos container destroy
$ daos cont destroy --pool=$DAOS_POOL --cont=$DAOS_CONT Successfully destroyed container bc4fe707-7470-4b7d-83bf-face75cc98fc
daos container query
$ daos cont query --pool=$DAOS_POOL --cont=$DAOS_CONT Pool UUID: 528f4710-7eb8-4850-b6aa-09e4b3c8f532 Container UUID: bc4fe707-7470-4b7d-83bf-face75cc98fc Number of snapshots: 0 Latest Persistent Snapshot: 0 Highest Aggregated Epoch: 172477977191481344 Container redundancy factor: 1
daos container snapshot help/create/list/destroy
$ daos help cont create-snap
daos command (v1.2), libdaos 1.2.0
container options (snapshot and rollback-related):
--snap=NAME container snapshot (create/destroy-snap, rollback)
--epc=EPOCHNUM container epoch (destroy-snap, rollback)
--epcrange=B-E container epoch range (destroy-snap)
container options (query, and all commands except create):
<pool options> with --cont use: (--pool, --sys-name)
<pool options> with --path use: (--sys-name)
--cont=UUID (mandatory, or use --path)
--path=PATHSTR
$ daos cont create-snap --pool=$DAOS_POOL --cont=$DAOS_CONT
snapshot/epoch 172646116775952384 has been created
$ daos container list-snaps --pool=$DAOS_POOL --cont=$DAOS_CONT
Container's snapshots :
172478166024060928
172646116775952384
$ daos container destroy-snap --pool=$DAOS_POOL --cont=$DAOS_CONT --epc=172646116775952384
$ daos container list-snaps --pool=$DAOS_POOL --cont=$DAOS_CONT
Container's snapshots :
172478166024060928
Frequent errors user might see and workaround
use dmg command without daos_admin privilege
# Error message or timeout after dmg system query $ dmg system query ERROR: dmg: Unable to load Certificate Data: could not load cert: stat /etc/daos/certs/admin.crt: no such file or directory # Workaround # 1. Make sure the admin-host /etc/daos/daos_control.yml is correctly configured. # including: # hostlist: <daos_server_lists> # port: <port_num> # transport_config: # allow_insecure: <true/false> # ca_cert: /etc/daos/certs/daosCA.crt # cert: /etc/daos/certs/admin.crt # key: /etc/daos/certs/admin.key # # 2. Make sure the admin-host allow_insecure mode match with the servers'.
use daos command before daos_agent started
$ daos cont create --pool=$DAOS_POOL daos ERR src/common/drpc.c:217 unixcomm_connect() Failed to connect to /var/run/daos_agent/daos_agent.sock, errno=2(No such file or directory) mgmt ERR src/mgmt/cli_mgmt.c:222 get_attach_info() failed to connect to /var/run/daos_agent/daos_agent.sock DER_MISC(-1025): 'Miscellaneous error' failed to initialize daos: Miscellaneous error (-1025) # Work around to check for daos_agent certification and start daos_agent $ #check for /etc/daos/certs/daosCA.crt, agent.crt and agent.key $ sudo systemctl enable daos_agent.service $ sudo systemctl start daos_agent.service
use daos command with invalid or wrong parameters
# Lack of providing daos pool_uuid
$ daos pool list-cont
pool UUID required
rc: 2
daos command (v1.2), libdaos 1.2.0
usage: daos RESOURCE COMMAND [OPTIONS]
resources:
pool pool
container (cont) container
filesystem (fs) copy to and from a POSIX filesystem
object (obj) object
shell Interactive obj ctl shell for DAOS
version print command version
help print this message and exit
use 'daos help RESOURCE' for resource specifics
# Invalid sub-command cont-list
$ daos pool cont-list --pool=$DAOS_POOL
invalid pool command: cont-list
error parsing command line arguments
daos command (v1.2), libdaos 1.2.0
usage: daos RESOURCE COMMAND [OPTIONS]
resources:
pool pool
container (cont) container
filesystem (fs) copy to and from a POSIX filesystem
object (obj) object
shell Interactive obj ctl shell for DAOS
version print command version
help print this message and exit
use 'daos help RESOURCE' for resource specifics
# Working daos pool command
$ daos pool list-cont --pool=$DAOS_POOL
bc4fe707-7470-4b7d-83bf-face75cc98fc
dmg pool create failed due to no space
$ dmg pool create --size=50G Creating DAOS pool with automatic storage allocation: 50 GB NVMe + 6.00% SCM ERROR: dmg: pool create failed: DER_NOSPACE(-1007): No space on storage target # Workaround: dmg storage query scan to find current available storage $ dmg storage query usage Hosts SCM-Total SCM-Free SCM-Used NVMe-Total NVMe-Free NVMe-Used ----- --------- -------- -------- ---------- --------- --------- boro-8 17 GB 6.0 GB 65 % 0 B 0 B N/A $ dmg pool create --size=2G Creating DAOS pool with automatic storage allocation: 2.0 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : b5ce2954-3f3e-4519-be04-ea298d776132 Service Ranks : 0 Storage Ranks : 0 Total Size : 2.0 GB SCM : 2.0 GB (2.0 GB / rank) NVMe : 0 B (0 B / rank) $ dmg storage query usage Hosts SCM-Total SCM-Free SCM-Used NVMe-Total NVMe-Free NVMe-Used ----- --------- -------- -------- ---------- --------- --------- boro-8 17 GB 2.9 GB 83 % 0 B 0 B N/A
dmg pool destroy timeout
# dmg pool destroy Timeout or failed due to pool has active container(s) # Workaround pool destroy --force option $ dmg pool destroy --pool=$DAOS_POOL --force Pool-destroy command succeeded
Run with dfuse fio
required rpm
$ sudo yum install -y fio or $ sudo yum install -y daos-tests
run fio
$ dmg pool create --size=10G $ daos cont create --pool=$DAOS_POOL --type=POSIX $ daos cont query --pool=$DAOS_POOL --cont=$DAOS_CONT Pool UUID: f688f2ad-76ae-4368-8d1b-5697ca016a43 Container UUID: bcc5c793-60dc-4ec1-8bab-9d63ea18e794 Number of snapshots: 0 Latest Persistent Snapshot: 0 Highest Aggregated Epoch: 0 Container redundancy factor: 0 $ /usr/bin/mkdir /tmp/daos_test1 $ /usr/bin/touch /tmp/daos_test1/testfile $ /usr/bin/df -h -t fuse.daos df: no file systems processed $ /usr/bin/dfuse --m=/tmp/daos_test1 --pool=$DAOS_POOL --cont=$DAOS_CONT $ /usr/bin/df -h -t fuse.daos Filesystem Size Used Avail Use% Mounted on dfuse 954M 144K 954M 1% /tmp/daos_test1 $ /usr/bin/fio --name=random-write --ioengine=pvsync --rw=randwrite --bs=4k --size=128M --nrfiles=4 --directory=/tmp/daos_test1 --numjobs=8 --iodepth=16 --runtime=60 --time_based --direct=1 --buffered=0 --randrepeat=0 --norandommap --refill_buffers --group_reportingrandom-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=pvsync, iodepth=16 ... fio-3.7 Starting 8 processes random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) random-write: Laying out IO files (4 files / total 128MiB) write: IOPS=19.9k, BW=77.9MiB/s (81.7MB/s)(731MiB/9379msec) clat (usec): min=224, max=6539, avg=399.16, stdev=70.52 lat (usec): min=224, max=6539, avg=399.19, stdev=70.52 clat percentiles (usec): ... bw ( KiB/s): min= 9368, max=10096, per=12.50%, avg=9972.06, stdev=128.28, samples=144 iops : min= 2342, max= 2524, avg=2493.01, stdev=32.07, samples=144 lat (usec) : 250=0.01%, 500=96.81%, 750=3.17%, 1000=0.01% lat (msec) : 10=0.01% cpu : usr=0.43%, sys=1.05%, ctx=187242, majf=0, minf=488 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.1%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,187022,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): WRITE: bw=77.9MiB/s (81.7MB/s), 77.9MiB/s-77.9MiB/s (81.7MB/s-81.7MB/s), io=731MiB (766MB), run=9379-9379msec
# Data after fio completed $ ll /tmp/daos_test1 total 1048396 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.0.0 rw-rr- 1 user1 user1 33546240 Apr 21 23:28 random-write.0.1 rw-rr- 1 user1 user1 33542144 Apr 21 23:28 random-write.0.2 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.0.3 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.1.0 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.1.1 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.1.2 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.1.3 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.2.0 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.2.1 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.2.2 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.2.3 rw-rr- 1 user1 user1 33542144 Apr 21 23:28 random-write.3.0 rw-rr- 1 user1 user1 33550336 Apr 21 23:28 random-write.3.1 rw-rr- 1 user1 user1 33550336 Apr 21 23:28 random-write.3.2 rw-rr- 1 user1 user1 33542144 Apr 21 23:28 random-write.3.3 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.4.0 rw-rr- 1 user1 user1 33525760 Apr 21 23:28 random-write.4.1 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.4.2 rw-rr- 1 user1 user1 33550336 Apr 21 23:28 random-write.4.3 rw-rr- 1 user1 user1 33542144 Apr 21 23:28 random-write.5.0 rw-rr- 1 user1 user1 33546240 Apr 21 23:28 random-write.5.1 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.5.2 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.5.3 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.6.0 rw-rr- 1 user1 user1 33550336 Apr 21 23:28 random-write.6.1 rw-rr- 1 user1 user1 33550336 Apr 21 23:28 random-write.6.2 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.6.3 rw-rr- 1 user1 user1 33525760 Apr 21 23:28 random-write.7.0 rw-rr- 1 user1 user1 33554432 Apr 21 23:28 random-write.7.1 rw-rr- 1 user1 user1 33525760 Apr 21 23:28 random-write.7.2 rw-rr- 1 user1 user1 33542144 Apr 21 23:28 random-write.7.3
unmount
$ fusermount -u /tmp/daos_test1/ $ df -h -t fuse.daos df: no file systems processed
Run with mpirun mdtest
required rpms
$ sudo yum install -y mpich $ sudo yum install -y mdtest $ sudo yum install -y Lmod $ sudo module load mpi/mpich-x86_64 $ /usr/bin/touch /tmp/daos_test1/testfile
run mpirun ior and mdtest
# Run mpirun ior $ /usr/lib64/mpich/bin/mpirun -host <host1> -np 30 ior -a POSIX -b 26214400 -v -w -k -i 1 -o /tmp/daos_test1/testfile -t 25M IOR-3.4.0+dev: MPI Coordinated Test of Parallel I/O Began : Fri Apr 16 18:07:56 2021 Command line : ior -a POSIX -b 26214400 -v -w -k -i 1 -o /tmp/daos_test1/testfile -t 25M Machine : Linux boro-8.boro.hpdd.intel.com Start time skew across all tasks: 0.00 sec TestID : 0 StartTime : Fri Apr 16 18:07:56 2021 Path : /tmp/daos_test1/testfile FS : 3.8 GiB Used FS: 1.1% Inodes: 0.2 Mi Used Inodes: 0.1% Participating tasks : 30 Options: api : POSIX apiVersion : test filename : /tmp/daos_test1/testfile access : single-shared-file type : independent segments : 1 ordering in a file : sequential ordering inter file : no tasks offsets nodes : 1 tasks : 30 clients per node : 30 repetitions : 1 xfersize : 25 MiB blocksize : 25 MiB aggregate filesize : 750 MiB verbose : 1 Results: access bw(MiB/s) IOPS Latency(s) block(KiB) xfer(KiB) open(s) wr/rd(s) close(s) total(s) iter ------ --------- ---- ---------- ---------- --------- -------- -------- -------- -------- ---- Commencing write performance test: Fri Apr 16 18:07:56 2021 write 1499.68 59.99 0.480781 25600 25600 0.300237 0.500064 0.483573 0.500107 0 Max Write: 1499.68 MiB/sec (1572.53 MB/sec) Summary of all tests: Operation Max(MiB) Min(MiB) Mean(MiB) StdDev Max(OPs) Min(OPs) Mean(OPs) StdDev Mean(s) Stonewall(s) Stonewall(MiB) Test# #Tasks tPN reps fPP reord reordoff reordrand seed segcnt blksiz xsize aggs(MiB) API RefNum write 1499.68 1499.68 1499.68 0.00 59.99 59.99 59.99 0.00 0.50011 NA NA 0 30 30 1 0 0 1 0 0 1 26214400 26214400 750.0 POSIX 0 Finished : Fri Apr 16 18:07:57 2021 # Run mpirun mdtest $ /usr/lib64/mpich/bin/mpirun -host <host1> -np 30 mdtest -a DFS -z 0 -F -C -i 1 -n 1667 -e 4096 -d / -w 4096 --dfs.chunk_size 1048576 --dfs.cont <container.uuid> --dfs.destroy --dfs.dir_oclass RP_3G1 --dfs.group daos_server --dfs.oclass RP_3G1 --dfs.pool <pool_uuid> – started at 04/16/2021 22:01:55 – mdtest-3.4.0+dev was launched with 30 total task(s) on 1 node(s) Command line used: mdtest 'a' 'DFS' '-z' '0' '-F' '-C' '-i' '1' '-n' '1667' '-e' '4096' '-d' '/' '-w' '4096' 'dfs.chunk_size' '1048576' 'dfs.cont' '3e661024-2f1f-4d7a-9cd4-1b05601e0789' 'dfs.destroy' 'dfs.dir_oclass' 'SX' 'dfs.group' 'daos_server' 'dfs.oclass' 'SX' '-dfs.pool' 'd546a7f5-586c-4d8f-aecd-372878df7b97' WARNING: unable to use realpath() on file system. Path: FS: 0.0 GiB Used FS: -nan% Inodes: 0.0 Mi Used Inodes: -nan% Nodemap: 111111111111111111111111111111 30 tasks, 50010 files SUMMARY rate: (of 1 iterations) Operation Max Min Mean Std Dev --------- — — ---- ------- File creation : 14206.584 14206.334 14206.511 0.072 File stat : 0.000 0.000 0.000 0.000 File read : 0.000 0.000 0.000 0.000 File removal : 0.000 0.000 0.000 0.000 Tree creation : 1869.791 1869.791 1869.791 0.000 Tree removal : 0.000 0.000 0.000 0.000 – finished at 04/16/2021 22:01:58 – $ /usr/lib64/mpich/bin/mpirun -host <host1> -np 50 mdtest -a DFS -z 0 -F -C -i 1 -n 1667 -e 4096 -d / -w 4096 --dfs.chunk_size 1048576 --dfs.cont 3e661024-2f1f-4d7a-9cd4-1b05601e0789 --dfs.destroy --dfs.dir_oclass SX --dfs.group daos_server --dfs.oclass SX --dfs.pool d546a7f5-586c-4d8f-aecd-372878df7b97 – started at 04/16/2021 22:02:21 – mdtest-3.4.0+dev was launched with 50 total task(s) on 1 node(s) Command line used: mdtest 'a' 'DFS' '-z' '0' '-F' '-C' '-i' '1' '-n' '1667' '-e' '4096' '-d' '/' '-w' '4096' 'dfs.chunk_size' '1048576' 'dfs.cont' '3e661024-2f1f-4d7a-9cd4-1b05601e0789' 'dfs.destroy' 'dfs.dir_oclass' 'SX' 'dfs.group' 'daos_server' 'dfs.oclass' 'SX' '-dfs.pool' 'd546a7f5-586c-4d8f-aecd-372878df7b97' WARNING: unable to use realpath() on file system. Path: FS: 0.0 GiB Used FS: -nan% Inodes: 0.0 Mi Used Inodes: -nan% Nodemap: 11111111111111111111111111111111111111111111111111 50 tasks, 83350 files SUMMARY rate: (of 1 iterations) Operation Max Min Mean Std Dev --------- — — ---- ------- File creation : 13342.303 13342.093 13342.228 0.059 File stat : 0.000 0.000 0.000 0.000 File read : 0.000 0.000 0.000 0.000 File removal : 0.000 0.000 0.000 0.000 Tree creation : 1782.938 1782.938 1782.938 0.000 Tree removal : 0.000 0.000 0.000 0.000 – finished at 04/16/2021 22:02:27 –
Run with 4 DAOS hosts server, rebuild with dfuse_io and mpirun
Environment variables setup
export SERVER_NODES=node-1,node-2,node-3,node-4 export ADMIN_NODE=node-5 export CLIENT_NODE=node-5 export ALL_NODES=$SERVER_NODES,$CLIENT_NODE
Run dfuse
# Bring up 4 hosts server with appropriate daos_server.yml and
# access-point, reference to DAOS Set-Up
# After DAOS servers, DAOS admin and client started.
$ dmg storage format
Format Summary:
Hosts SCM Devices NVMe Devices
----- ----------- ------------
boro-[8,35,52-53] 1 0
$ dmg pool list
Pool UUID Svc Replicas
--------- ------------
733bee7b-c2af-499e-99dd-313b1ef092a9
[1-3]
$ daos cont create --pool=$DAOS_POOL --type=POSIX --oclass=RP_3G1 --properties=rf:2
Successfully created container 2649aa0f-3ad7-4943-abf5-4343205a637b
$ daos pool list-cont --pool=$DAOS_POOL
2649aa0f-3ad7-4943-abf5-4343205a637b
$ dmg pool query --pool=$DAOS_POOL
Pool 733bee7b-c2af-499e-99dd-313b1ef092a9, ntarget=32, disabled=0, leader=2, version=1
Pool space info:
- Target(VOS) count:32
- SCM:
Total size: 5.0 GB
Free: 5.0 GB, min:156 MB, max:156 MB, mean:156 MB
- NVMe:
Total size: 0 B
Free: 0 B, min:0 B, max:0 B, mean:0 B
Rebuild idle, 0 objs, 0 recs
$ df -h -t fuse.daos
df: no file systems processed
$ mkdir /tmp/daos_test1
$ dfuse --mountpoint=/tmp/daos_test1 --pool=$DAOS_POOL --cont=$DAOS_CONT
$ df -h -t fuse.daos
Filesystem Size Used Avail Use% Mounted on
dfuse 19G 1.1M 19G 1% /tmp/daos_test1
$ fio --name=random-write --ioengine=pvsync --rw=randwrite --bs=4k --size=128M --nrfiles=4 --directory=/tmp/daos_test1 --numjobs=8 --iodepth=16 --runtime=60 --time_based --direct=1 --buffered=0 --randrepeat=0 --norandommap --refill_buffers --group_reporting
random-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=pvsync, iodepth=16
...
fio-3.7
Starting 8 processes
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
random-write: Laying out IO files (4 files / total 128MiB)
Jobs: 8 (f=32): [w(8)][100.0%][r=0KiB/s,w=96.1MiB/s][r=0,w=24.6k IOPS][eta 00m:00s]
random-write: (groupid=0, jobs=8): err= 0: pid=27879: Sat Apr 17 01:12:57 2021
write: IOPS=24.4k, BW=95.3MiB/s (99.9MB/s)(5716MiB/60001msec)
clat (usec): min=220, max=6687, avg=326.19, stdev=55.29
lat (usec): min=220, max=6687, avg=326.28, stdev=55.29
clat percentiles (usec):
| 1.00th=[ 260], 5.00th=[ 273], 10.00th=[ 285], 20.00th=[ 293],
| 30.00th=[ 306], 40.00th=[ 314], 50.00th=[ 322], 60.00th=[ 330],
| 70.00th=[ 338], 80.00th=[ 355], 90.00th=[ 375], 95.00th=[ 396],
| 99.00th=[ 445], 99.50th=[ 465], 99.90th=[ 523], 99.95th=[ 562],
| 99.99th=[ 1827]
bw ( KiB/s): min=10976, max=12496, per=12.50%, avg=12191.82, stdev=157.87, samples=952
iops : min= 2744, max= 3124, avg=3047.92, stdev=39.47, samples=952
lat (usec) : 250=0.23%, 500=99.61%, 750=0.15%, 1000=0.01%
lat (msec) : 2=0.01%, 4=0.01%, 10=0.01%
cpu : usr=0.81%, sys=1.69%, ctx=1463535, majf=0, minf=308
IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0%
submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
complete : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0%
issued rwts: total=0,1463226,0,0 short=0,0,0,0 dropped=0,0,0,0
latency : target=0, window=0, percentile=100.00%, depth=16
Run status group 0 (all jobs):
WRITE: bw=95.3MiB/s (99.9MB/s), 95.3MiB/s-95.3MiB/s (99.9MB/s-99.9MB/s), io=5716MiB (5993MB), run=60001-60001msec
Run dfuse with rebuild
# Start dfuse $ fio --name=random-write --ioengine=pvsync --rw=randwrite --bs=4k --size=128M --nrfiles=4 --directory=/tmp/daos_test1 --numjobs=8 --iodepth=16 --runtime=60 --time_based --direct=1 --buffered=0 --randrepeat=0 --norandommap --refill_buffers --group_reporting random-write: (g=0): rw=randwrite, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=pvsync, iodepth=16 ... fio-3.7 Starting 8 processes fio: io_u error on file /tmp/daos_test1/random-write.2.1: Input/output error: write offset=8527872, buflen=4096 fio: pid=28242, err=5 file:io_u.c:1747 bw ( KiB/s): min= 3272, max=12384, per=30.14%, avg=11624.50, stdev=2181.01, samples=128 iops : min= 818, max= 3096, avg=2906.12, stdev=545.25, samples=128 lat (usec) : 250=0.23%, 500=99.59%, 750=0.12%, 1000=0.01% lat (msec) : 2=0.03%, 4=0.02% cpu : usr=0.27%, sys=0.66%, ctx=186210, majf=0, minf=494 IO depths : 1=100.0%, 2=0.0%, 4=0.0%, 8=0.0%, 16=0.0%, 32=0.0%, >=64=0.0% submit : 0=0.0%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% complete : 0=0.1%, 4=100.0%, 8=0.0%, 16=0.0%, 32=0.0%, 64=0.0%, >=64=0.0% issued rwts: total=0,186000,0,0 short=0,0,0,0 dropped=0,0,0,0 latency : target=0, window=0, percentile=100.00%, depth=16 Run status group 0 (all jobs): WRITE: bw=37.7MiB/s (39.5MB/s), 37.7MiB/s-37.7MiB/s (39.5MB/s-39.5MB/s), io=727MiB (762MB), run=19291-19291msec ...
# from daos_admin console, stop leader-rank with debug $ dmg -d system stop --ranks=3 DEBUG 01:34:58.026753 main.go:217: debug output enabled DEBUG 01:34:58.027457 main.go:244: control config loaded from /etc/daos/daos_control.yml Rank Operation Result --------- ------ 3 stop OK $ daos pool list-cont --pool=$DAOS_POOL cf2a95ce-9910-4d5e-814c-cafb0a7f0944 $ dmg pool query --pool=$DAOS_POOL Pool 70f73efc-848e-4f6e-b4fd-909bcf9bd427, ntarget=32, disabled=8, leader=2, version=18 Pool space info: Target(VOS) count:24 SCM: Total size: 15 GB Free: 14 GB, min:575 MB, max:597 MB, mean:587 MB NVMe: Total size: 0 B Free: 0 B, min:0 B, max:0 B, mean:0 B Rebuild done, 1 objs, 57 recs # Verify stopped server been evicted $ dmg system query -v Rank UUID Control Address Fault Domain State Reason ---- --------------- ------------ ----- ------ 0 2bf0e083-33d6-4ce3-83c4-c898c2a7ddbd 10.7.1.8:10001 boro-8.boro.hpdd.intel.com Joined 1 c9ac1dd9-0f9d-4684-90d3-038b720fd26b 10.7.1.35:10001 boro-35.boro.hpdd.intel.com Joined 2 80e44fe9-3a2b-4808-9a0f-88c3cbe7f565 10.7.1.53:10001 boro-53.boro.hpdd.intel.com Joined 3 a26fd44a-6089-4cc3-a06b-278a85607fd3 10.7.1.52:10001 boro-52.boro.hpdd.intel.com Evicted system stop
# Restart, after evicted server restarted, verify the server joined $ /usr/bin/dmg system query -v Rank UUID Control Address Fault Domain State Reason ---- --------------- ------------ ----- ------ 0 2bf0e083-33d6-4ce3-83c4-c898c2a7ddbd 10.7.1.8:10001 /boro-8.boro.hpdd.intel.com Joined 1 c9ac1dd9-0f9d-4684-90d3-038b720fd26b 10.7.1.35:10001 /boro-35.boro.hpdd.intel.com Joined 2 80e44fe9-3a2b-4808-9a0f-88c3cbe7f565 10.7.1.53:10001 /boro-53.boro.hpdd.intel.com Joined 3 a26fd44a-6089-4cc3-a06b-278a85607fd3 10.7.1.52:10001 /boro-52.boro.hpdd.intel.com Joined # Unmount after test completed $ fusermount -u /tmp/daos_test1/ $ df -h -t fuse.daos df: no file systems processed
Run mpirun mdtest with rebuild
$ dmg pool create --size=50G Creating DAOS pool with automatic storage allocation: 50 GB NVMe + 6.00% SCM Pool created with 100.00% SCM/NVMe ratio ----------------------------------------- UUID : 4eda8a8c-028c-461c-afd3-704534961572 Service Ranks : [1-3] Storage Ranks : [0-3] Total Size : 50 GB SCM : 50 GB (12 GB / rank) NVMe : 0 B (0 B / rank) $ daos cont create --pool=$DAOS_POOL --type=POSIX --oclass=RP_3G1 --properties=rf:2 Successfully created container d71ff6a5-15a5-43fe-b829-bef9c65b9ccb $ /usr/lib64/mpich/bin/mpirun -host boro-8 -np 30 mdtest -a DFS -z 0 -F -C -i 100 -n 1667 -e 4096 -d / -w 4096 --dfs.chunk_size 1048576 --dfs.cont $DAOS_CONT --dfs.destroy --dfs.dir_oclass RP_3G1 --dfs.group daos_server --dfs.oclass RP_3G1 --dfs.pool $DAOS_POOL started at 04/22/2021 17:46:20 – mdtest-3.4.0+dev was launched with 30 total task(s) on 1 node(s) Command line used: mdtest 'a' 'DFS' '-z' '0' '-F' '-C' '-i' '100' '-n' '1667' '-e' '4096' '-d' '/' '-w' '4096' 'dfs.chunk_size' '1048576' 'dfs.cont' 'd71ff6a5-15a5-43fe-b829-bef9c65b9ccb' 'dfs.destroy' 'dfs.dir_oclass' 'RP_3G1' 'dfs.group' 'daos_server' 'dfs.oclass' 'RP_3G1' '-dfs.pool' '4eda8a8c-028c-461c-afd3-704534961572' WARNING: unable to use realpath() on file system. Path: FS: 0.0 GiB Used FS: -nan% Inodes: 0.0 Mi Used Inodes: -nan% Nodemap: 111111111111111111111111111111 30 tasks, 50010 files ...
# from daos_admin console, stop a server rank $ dmg system stop --ranks=2 Rank Operation Result --------- ------ 2 stop OK # Verify stopped server been evicted $ dmg system query -v Rank UUID Control Address Fault Domain State Reason ---- --------------- ------------ ----- ------ 0 2bf0e083-33d6-4ce3-83c4-c898c2a7ddbd 10.7.1.8:10001 boro-8.boro.hpdd.intel.com Joined 1 c9ac1dd9-0f9d-4684-90d3-038b720fd26b 10.7.1.35:10001 boro-35.boro.hpdd.intel.com Joined 2 80e44fe9-3a2b-4808-9a0f-88c3cbe7f565 10.7.1.53:10001 boro-53.boro.hpdd.intel.com Evicted system stop 3 a26fd44a-6089-4cc3-a06b-278a85607fd3 10.7.1.52:10001 boro-52.boro.hpdd.intel.com Joined
# Restart, after evicted server restarted, verify the server joined $ /usr/bin/dmg system query -v Rank UUID Control Address Fault Domain State Reason ---- --------------- ------------ ----- ------ 0 2bf0e083-33d6-4ce3-83c4-c898c2a7ddbd 10.7.1.8:10001 /boro-8.boro.hpdd.intel.com Joined 1 c9ac1dd9-0f9d-4684-90d3-038b720fd26b 10.7.1.35:10001 /boro-35.boro.hpdd.intel.com Joined 2 80e44fe9-3a2b-4808-9a0f-88c3cbe7f565 10.7.1.53:10001 /boro-53.boro.hpdd.intel.com Joined 3 a26fd44a-6089-4cc3-a06b-278a85607fd3 10.7.1.52:10001 /boro-52.boro.hpdd.intel.com Joined
Clean-Up
# pool reintegrate $ dmg pool reintegrate --pool=$DAOS_POOL --rank=2 Reintegration command succeeded # destroy container $ daos container destroy --pool=$DAOS_POOL --cont=$DAOS_CONT # destroy pool $ dmg pool destroy --pool=$DAOS_POOL Pool-destroy command succeeded # stop clients $ pdsh -S -w $CLIENT_NODES "sudo systemctl stop daos_agent.service" # disable clients $ pdsh -S -w $CLIENT_NODES "sudo systemctl disable daos_agent.service" # stop servers $ pdsh -S -w $SERVER_NODES "sudo systemctl stop daos_server.service" # disable servers $ pdsh -S -w $SERVER_NODES "sudo systemctl disable daos_server.service"