Recent content by vFX

thank you ;)

I just want to do this in the "clean" way. I'll try to explain better: if I run 'umount /my/raid/mountpoint' and then I use md0 as iSCSI backstore (which should work, I have not tried yet) what happen if I run 'mount /dev/md0 /my/raid/mountpoint' after some time? So my question is: how can I...

I have a software raid 1 root@storage:~# mdadm --detail /dev/md0 /dev/md0: Version : 1.2 Creation Time : Sun May 3 11:51:50 2015 Raid Level : raid1 Array Size : 468718592 (447.00 GiB 479.97 GB) Used Dev Size : 468718592 (447.00 GiB 479.97 GB) Raid Devices : 2...

you are right, sorry specs (from top) Switch - Cisco SG300-10 (front) - Cisco SG100-16 (back) SAN / Storage (always on) - SuperMicro SuperChassis SC733TQ-465B - Supermicro X8DTE-f + 1xE5620 [email protected] + 24GB ECC Reg DDR3 1333 - LSI 9240 --> 2x Toshiba 2.5" 7200rpm 500GB RAID1 --> OS...

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:D

what you mean with "RAID1 with two SSDs (no TRIM)" ? TRIM is disabled when two SSDs are in RAID1 config?

this is very strange what's the speed of a scp transfer? (single ~1GB file) do you have a controller or HBA for some tests?

thank you for the explanation, it's very helpful have this stuff explained outside from the technical documents. my plan is esxi1+opensm (hca0,ib0) <------------------------> (hca0,ib0) storage esxi2+opensm (hca0,ib0) <------------------------> (hca0,ib1) storage so I should have no problems...

yes I'm using IPoIB, so I don't need the vmware drivers? just the MLNX OFED (and optionally opensm if it's not running on the other node)

to be completely honest I have still some problems to understand how opensm works. I mean, the theory is "easy and obvious" but in practice I'm not sure how opensm works and what exactly I have configured. maybe it's normal and I have just to practice more.. about the mtu I was pretty...

good point, at some point I thought the same thing and checked that opensm on the storage node was not running but the problem was something else, as said earlier

HYPERV1 is the name of my VMware vSphere ESXi host, it's not a Microsoft HyperV server :D the MTU mentioned in the devinfo output is 4096 but in ifconfig ib1 is 2044. since I'm running IPoIB and I'm a ib newbie I'm not sure what exactly the 4096 in devinfo means, I suppose this is for...

Thank you dasaint, I have solved using older mellanox drivers but I will try on a test node as you suggested. Anyway the inbox drivers needs to be installed anyway? I install them after the mellanox? If you have time and want to take a look there: http://hardforum.com/showthread.php?t=1846599...

I have this "simple" setup Node 1 "STORAGE" OS: Ubuntu 14.04 (server) IB: Mellanox ConnectX 2 Software installed: Mellanox OFED 2.3-2.0.0 (ubuntu14.04-x86_64) Node 2 "HYPERV1" OS: ESXi 5.5 IB: Mellanox ConnectX 2 Software installed: MLNX-OFED-ESX-1.8.2.0, mlx4_en-mlnx-1.6.1.2-471530...