[pve-devel] LXC volumes on ZFS over iSCSI

Alexandre DERUMIER aderumier at odiso.com
Wed Oct 12 06:37:22 CEST 2016


> I'm curious to see result of:
> 
>>It seems to work :-)

Ok, so it shouldn't be too diffcult to add|remove lun in activate|deactiveate volume :)



About NFS vs Iscsi, I think we should add both if we can.
Because not everybody love both NFS && ISCSI. (I'm already seeing the long debate in forum ;)




----- Mail original -----
De: "datanom.net" <mir at datanom.net>
À: "pve-devel" <pve-devel at pve.proxmox.com>
Envoyé: Mardi 11 Octobre 2016 23:12:58
Objet: Re: [pve-devel] LXC volumes on ZFS over iSCSI

On Mon, 10 Oct 2016 22:30:04 +0200 (CEST) 
Alexandre DERUMIER <aderumier at odiso.com> wrote: 

> 
> I'm afraid of behaviour if a node is not joinable to do the delete or rescan. 
> Seem to be difficult to manage with big cluster. 
> I'm curious to see result of: 
> 
It seems to work :-) 

1) After login to target: 
Oct 11 22:56:41 pve-dev kernel: [70633.376458] scsi host6: iSCSI Initiator over TCP/IP 
Oct 11 22:56:42 pve-dev kernel: [70633.885229] scsi 6:0:0:0: Direct-Access SUN COMSTAR 1.0 PQ: 0 ANSI: 5 
Oct 11 22:56:42 pve-dev kernel: [70633.887715] sd 6:0:0:0: Attached scsi generic sg2 type 0 
Oct 11 22:56:42 pve-dev kernel: [70633.889615] sd 6:0:0:0: [sdb] 4194304 512-byte logical blocks: (2.15 GB/2.00 GiB) 
Oct 11 22:56:42 pve-dev kernel: [70633.891141] sd 6:0:0:0: [sdb] Write Protect is off 
Oct 11 22:56:42 pve-dev kernel: [70633.891655] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA 
Oct 11 22:56:42 pve-dev kernel: [70633.902977] sd 6:0:0:0: [sdb] Attached SCSI disk 
fdisk -l 
Disk /dev/sdb: 2 GiB, 2147483648 bytes, 4194304 sectors 
Units: sectors of 1 * 512 = 512 bytes 
Sector size (logical/physical): 512 bytes / 512 bytes 
I/O size (minimum/optimal): 512 bytes / 512 bytes 

2) On target remove view 
3) Rescan target: 
Oct 11 22:59:06 pve-dev kernel: [70778.489172] sdb: detected capacity change from 2147483648 to 0 
fdisk -l 
No disk /dev/sdb 
lsscsi 
[1:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0 
[2:0:0:0] disk SUN COMSTAR 1.0 /dev/sda 
[6:0:0:0] disk SUN COMSTAR 1.0 /dev/sdb 
echo 1 > /sys/bus/scsi/devices/target6\:0\:0/6\:0\:0\:0/delete 
lsscsi 
[1:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0 
[2:0:0:0] disk SUN COMSTAR 1.0 /dev/sda 
4) On target add view again 
5) Rescan target: 
Oct 11 23:11:11 pve-dev kernel: [71503.637169] scsi 6:0:0:0: Direct-Access SUN COMSTAR 1.0 PQ: 0 ANSI: 5 
Oct 11 23:11:11 pve-dev kernel: [71503.638560] sd 6:0:0:0: Attached scsi generic sg2 type 0 
Oct 11 23:11:11 pve-dev kernel: [71503.641348] sd 6:0:0:0: [sdb] 4194304 512-byte logical blocks: (2.15 GB/2.00 GiB) 
Oct 11 23:11:11 pve-dev kernel: [71503.645011] sd 6:0:0:0: [sdb] Write Protect is off 
Oct 11 23:11:11 pve-dev kernel: [71503.645520] sd 6:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA 
Oct 11 23:11:11 pve-dev kernel: [71503.655686] sd 6:0:0:0: [sdb] Attached SCSI disk 
lsscsi 
[1:0:0:0] cd/dvd QEMU QEMU DVD-ROM 2.5+ /dev/sr0 
[2:0:0:0] disk SUN COMSTAR 1.0 /dev/sda 
[6:0:0:0] disk SUN COMSTAR 1.0 /dev/sdb 


-- 
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Michael Rasmussen 

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