Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell?

2017-07-27 Thread Jonathan Buzzard
On 27/07/17 16:28, Oesterlin, Robert wrote: I’m sure I have a mix of V1 and V2 NSDs - how can I tell what the format each is? Well on anything approaching a recent Linux lsblk should as I understand it should show GPT partitions on v2 NSD's. Normally a v1 NSD would show up as a raw block

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread Spectrum Scale UG Chair (Simon Thompson)
Guys, this is supposed to be a community mailing list where people can come and ask questions and we can have healthy debate, but please can we keep it calm? Thanks Simon Group Chair ___ gpfsug-discuss mailing list gpfsug-discuss at

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread Jonathan Buzzard
On 27/07/17 16:51, Uwe Falke wrote: [SNIP] SCNR: It is always possible to make things worse. However, of course, if the efforts to do research on that system appear too expensive compared to the possible gain, then it is wise to give up and restore data from backup to a new file system.

Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell?

2017-07-27 Thread Oesterlin, Robert
Right - but what field do I look at? Bob Oesterlin Sr Principal Storage Engineer, Nuance From: on behalf of Luke Raimbach Reply-To: gpfsug main discussion list Date: Thursday, July

Re: [gpfsug-discuss] NSD V2 vs V1 - how can you tell?

2017-07-27 Thread Luke Raimbach
mmfsadm test readdescraw On Thu, 27 Jul 2017, 16:28 Oesterlin, Robert, wrote: > I’m sure I have a mix of V1 and V2 NSDs - how can I tell what the format > each is? > > > > Bob Oesterlin > Sr Principal Storage Engineer, Nuance > > > > >

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread Uwe Falke
gpfsug-discuss-boun...@spectrumscale.org wrote on 07/27/2017 05:09:31 PM: > From: Jonathan Buzzard > To: gpfsug main discussion list > Date: 07/27/2017 05:09 PM > Subject: Re: [gpfsug-discuss] Lost disks > Sent by:

[gpfsug-discuss] NSD V2 vs V1 - how can you tell?

2017-07-27 Thread Oesterlin, Robert
I’m sure I have a mix of V1 and V2 NSDs - how can I tell what the format each is? Bob Oesterlin Sr Principal Storage Engineer, Nuance ___ gpfsug-discuss mailing list gpfsug-discuss at spectrumscale.org

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread Jonathan Buzzard
On Thu, 2017-07-27 at 16:18 +0200, Uwe Falke wrote: > "Just doing something" makes things worse usually. Whether a 3rd > party tool knows how to handle GPFS NSDs can be doubted (as long as it > is not dedicated to that purpose). It might usually, but IBM have *ALREADY* given up in this case and

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread Jonathan Buzzard
On Thu, 2017-07-27 at 07:28 -0400, RICHARD RUPP wrote: > If you are under IBM support, leverage IBM for help. A third party > utility has the possibility of making it worse. > The chances of recovery are slim in the first place from this sort of problem. At least with v1 NSD descriptors.

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread RICHARD RUPP
If you are under IBM support, leverage IBM for help. A third party utility has the possibility of making it worse. From: John Hearns To: gpfsug main discussion list Date: 07/27/2017 06:40 AM Subject:Re: [gpfsug-discuss]

Re: [gpfsug-discuss] Lost disks

2017-07-27 Thread Jonathan Buzzard
On Wed, 2017-07-26 at 17:45 +, Oesterlin, Robert wrote: > One way this could possible happen would be a system is being > installed (I’m assuming this is Linux) and the FC adapter is active; > then the OS install will see disks and wipe out the NSD descriptor on > those disks. (Which is why