Hi Hitoshi,
Sorry for disturb.
I'm testing redundancy policy of sheepdog via iSCSI. I think
if I create a 1G v-disk, the total space cost of this device
should be 3*1G under a 3 copies policy. But after tests, I
find the cost of this device is only 1G. Seems no additional
copy is created.
I don't know what happened. I'd like to should my configurations
and wish you could take some time to help me. Many thanks!
linux-rme9:/mnt # dog cluster info
Cluster status: running, auto-recovery enabled
Cluster created at Tue Feb 3 23:07:13 2015
Epoch Time Version [Host:Port:V-Nodes,,,]
2015-02-03 23:07:13 1 [130.1.0.147:7000:128, 130.1.0.148:7000:128,
130.1.0.149:7000:128]
linux-rme9:/mnt # dog node list
Id Host:Port V-Nodes Zone
0 130.1.0.147:7000 128 0
1 130.1.0.148:7000 128 0
2 130.1.0.149:7000 128 0
linux-rme9:/mnt # dog vdi list
Name Id Size Used Shared Creation time VDI id Copies Tag
Block Size Shift
Hu0 0 1.0 GB 1.0 GB 0.0 MB 2015-02-03 23:12 6e7762 3
22
linux-rme9:/mnt # dog node info
Id Size Used Avail Use%
0 261 GB 368 MB 260 GB 0%
1 261 GB 336 MB 261 GB 0%
2 261 GB 320 MB 261 GB 0%
Total 783 GB 1.0 GB 782 GB 0%
Total virtual image size 1.0 GB
linux-rme9:/mnt # tgtadm --op show --mode target
Target 1: iqn.2015.01.org.sheepdog
System information:
Driver: iscsi
State: ready
I_T nexus information:
I_T nexus: 3
Initiator: iqn.1996-04.de.suse:01:23a8f73738e7 alias: Fs-Server
Connection: 0
IP Address: 130.1.0.10
LUN information:
LUN: 0
Type: controller
SCSI ID: IET 00010000
SCSI SN: beaf10
Size: 0 MB, Block size: 1
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: null
Backing store path: None
Backing store flags:
LUN: 1
Type: disk
SCSI ID: IET 00010001
SCSI SN: beaf11
Size: 1074 MB, Block size: 512
Online: Yes
Removable media: No
Prevent removal: No
Readonly: No
SWP: No
Thin-provisioning: No
Backing store type: sheepdog
Backing store path: tcp:130.1.0.147:7000:Hu0
Backing store flags:
Account information:
ACL information:
ALL
Client:
# iscsiadm -m node --targetname iqn.2015.01.org.sheepdog --portal
130.1.0.147:3260 --rescan
Rescanning session [sid: 4, target: iqn.2015.01.org.sheepdog, portal:
130.1.0.147,3260]
# dd if=/dev/random of=/dev/sdg bs=2M
dd: writing `/dev/sdg': No space left on device
0+13611539 records in
0+13611538 records out
1073741824 bytes (1.1 GB) copied, 956.511 s, 1.1 MB/s
Thanks!
Hu
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