Specifying explicit multiple networks in LMF file leads to mkfs.lustre failure

[degremont]

When we want to specify multiple lnets for a target in an explicit manner (by setting a network=lnet1,lnet2 in the LMF for example), mkfs.lustre does not handle corectly the generated "--network=lnet1,lnet2" command line set up by shine. I'm aware this is more a bug at the mkfs.lustre level, but it can be easily worked around inside shine with the following fix.

diff /usr/lib/python2.6/site-packages/Shine/Lustre/Actions/Format.py.sav /usr/lib/python2.6/site packages/Shine/Lustre/Actions/Format.py
143c143,144
<             command.append('--network=%s' %    self.comp.network)
---
>             for net in self.comp.network.split(','):
>                 command.append('--network=%s' % net)

Thanks.

Reported by: theryf

[degremont]

When you are specifying this 2 LNET networks, are you meaning this is a kind of double rails or you want to restrict the host to only 2 networks among more than that?

Is this compatible with the network matching code in the same function?

There is tests checking this behaviour in Lustre.Actions.CmdTest.ActionsTest. This seems enough unclear to me that this requires at least one test to ensure everything is going smoothly.

Original comment by: degremont

[degremont]

Oh, good catch ! Sorry, I didn't notice the matching code above. Indeed, I ought to have a look at it and the testcase you mention in order to ensure this is working smoothly, or adjust it if not.

Original comment by: theryf

[degremont]

• Milestone: 1.5 --> 1.6

Original comment by: degremont