Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

On Thu, Nov 5, 2015 at 8:23 AM, Tris Hoar  wrote:

> On 04/11/2015 20:59, John R Pierce wrote:
>
>> On 11/4/2015 12:52 PM, Boris Epstein wrote:
>>
>>> I don't get this for some reason... not even sure why. ESXi's default
>>> behaviour seems to be to allow hotplug, that does not seem to be
>>> deactivated. I am just not sure. Wonder if this could be the Centos 7
>>> vs 6
>>> - perhaps that is what I ought to test for.
>>>
>>
>> what virtual SCSI controller type are you using for these VM's? Mine are
>> 'paravirtual'.
>>
>>
> Also, what guest OS and VM hardware version is the guest running as?
>
> Tris
>
>
> *
> This email and any files transmitted with it are confidential
> and intended solely for the use of the individual or entity to whom they
> are addressed. If you have received this email in error please notify
> postmas...@bgfl.org
>
> The views expressed within this email are those of the individual, and not
> necessarily those of the organisation
> *
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

Tris, John,

Thanks!

I blew away the original VM I was using for testing as it came time to do
the things for real in production - and, as much as I hated it, I just
added the disk and rebooted the production machine to make it "see" that
disk.

However, I have then decided to investigate the matter further. So I
created a new one. It is  running on an ESXi 5.5 server, VM Version 10,
VMware Paravirtual SCSI controller, configured for RedHat 6/64-bit OS,
running Centos 6/64 bit. And it worked perfectly when it came to "seeing" a
hotplugged disk drive.

So I am not sure what to make of all of it - but it looks like freshly
created VM's are OK and it was indeed something to do with the VM settings.

Cheers,

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

On Fri, Nov 6, 2015 at 9:56 AM, Boris Epstein  wrote:

>
>
> On Thu, Nov 5, 2015 at 8:23 AM, Tris Hoar  wrote:
>
>> On 04/11/2015 20:59, John R Pierce wrote:
>>
>>> On 11/4/2015 12:52 PM, Boris Epstein wrote:
>>>
 I don't get this for some reason... not even sure why. ESXi's default
 behaviour seems to be to allow hotplug, that does not seem to be
 deactivated. I am just not sure. Wonder if this could be the Centos 7
 vs 6
 - perhaps that is what I ought to test for.

>>>
>>> what virtual SCSI controller type are you using for these VM's? Mine are
>>> 'paravirtual'.
>>>
>>>
>> Also, what guest OS and VM hardware version is the guest running as?
>>
>> Tris
>>
>>
>> *
>> This email and any files transmitted with it are confidential
>> and intended solely for the use of the individual or entity to whom they
>> are addressed. If you have received this email in error please notify
>> postmas...@bgfl.org
>>
>> The views expressed within this email are those of the individual, and
>> not necessarily those of the organisation
>> *
>>
>> ___
>> CentOS mailing list
>> CentOS@centos.org
>> https://lists.centos.org/mailman/listinfo/centos
>>
>
> Tris, John,
>
> Thanks!
>
> I blew away the original VM I was using for testing as it came time to do
> the things for real in production - and, as much as I hated it, I just
> added the disk and rebooted the production machine to make it "see" that
> disk.
>
> However, I have then decided to investigate the matter further. So I
> created a new one. It is  running on an ESXi 5.5 server, VM Version 10,
> VMware Paravirtual SCSI controller, configured for RedHat 6/64-bit OS,
> running Centos 6/64 bit. And it worked perfectly when it came to "seeing" a
> hotplugged disk drive.
>
> So I am not sure what to make of all of it - but it looks like freshly
> created VM's are OK and it was indeed something to do with the VM settings.
>
> Cheers,
>
> Boris.
>
>
Hello all,

OK, looks like I have figured it out. It seems to be a matter of the SCSI
bus emulation: things work fine with the Paravirtual but do not with the
LSI Parallel.

Good to know:)

Thanks for all your help, everybody.

Cheers,

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Tris Hoar]

On 04/11/2015 20:59, John R Pierce wrote:

On 11/4/2015 12:52 PM, Boris Epstein wrote:

I don't get this for some reason... not even sure why. ESXi's default
behaviour seems to be to allow hotplug, that does not seem to be
deactivated. I am just not sure. Wonder if this could be the Centos 7
vs 6
- perhaps that is what I ought to test for.


what virtual SCSI controller type are you using for these VM's? Mine are
'paravirtual'.



Also, what guest OS and VM hardware version is the guest running as?

Tris


*
This email and any files transmitted with it are confidential
and intended solely for the use of the individual or entity 
to whom they are addressed. If you have received this email 
in error please notify postmas...@bgfl.org


The views expressed within this email are those of the 
individual, and not necessarily those of the organisation

*
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[John R Pierce]

On 11/4/2015 11:36 AM, Boris Epstein wrote:

Absolutely, I see your point. This was the starting point - you add the
device on the ESXi server, you reboot the VM, the VM sees the device, no
problem. Now, I ask - do I have to reboot the VM? Logically I hope there
ought to be a way for me not to have to do that - but I have yet to figure
out how to get there.



vmware esxi 5.5.0 (free, using vsphere client to manage), vm is minimal 
centos 7 64bit.   I added a 16gb vdisk and immediately see this in dmesg...


[155484.386792] vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5)
[155484.386796] vmw_pvscsi: msg: device added at scsi0:1:0
[155484.388250] scsi 0:0:1:0: Direct-Access VMware   Virtual 
disk 1.0  PQ: 0 ANSI: 2
[155484.391275] sd 0:0:1:0: [sdb] 33554432 512-byte logical blocks: 
(17.1 GB/16.0 GiB)

[155484.391552] sd 0:0:1:0: [sdb] Write Protect is off
[155484.391556] sd 0:0:1:0: [sdb] Mode Sense: 61 00 00 00
[155484.391593] sd 0:0:1:0: [sdb] Cache data unavailable
[155484.391595] sd 0:0:1:0: [sdb] Assuming drive cache: write through
[155484.396148]  sdb: unknown partition table
[155484.396356] sd 0:0:1:0: [sdb] Attached SCSI disk

and lsblk shows...

# lsblk
NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sda 8:00   32G  0 disk

sdb 8:16   0   16G  0 disk
...

so I can immediately...

# mkfs.xfs /dev/sdb
meta-data=/dev/sdb   isize=256agcount=4, agsize=1048576 blks
.
# mount /dev/sdb /mnt
#

(normally, I'd partition and lvm it, this is just for demo)
I'm using a paravirtual scsi controller, and have previously installed 
open-vm-tools via yum.


I then umounted it, and in vsphere deleted the vdisk and dmesg 
immediately shows...


[155820.730477] vmw_pvscsi: msg type: 0x1 - MSG RING: 2/1 (5)
[155820.730481] vmw_pvscsi: msg: device removed at scsi0:1:0
[155820.754176] sd 0:0:0:0: Attached scsi generic sg0 type 0
[155820.754247] sr 2:0:0:0: Attached scsi generic sg1 type 5


I also did much the same with a CentOS 6.7 VM, also using a 'paravirtual 
SCSI' vm on the same esxi host, when I added the vdisk, it immediately 
shows...


# dmesg
.
vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5)
vmw_pvscsi: msg: device added at scsi0:1:0
scsi 2:0:1:0: Direct-Access VMware   Virtual disk 1.0  PQ: 0 ANSI: 2
sd 2:0:1:0: Attached scsi generic sg2 type 0
sd 2:0:1:0: [sdb] 33554432 512-byte logical blocks: (17.1 GB/16.0 GiB)
sd 2:0:1:0: [sdb] Write Protect is off
sd 2:0:1:0: [sdb] Mode Sense: 61 00 00 00
sd 2:0:1:0: [sdb] Cache data unavailable
sd 2:0:1:0: [sdb] Assuming drive cache: write through
sd 2:0:1:0: [sdb] Cache data unavailable
sd 2:0:1:0: [sdb] Assuming drive cache: write through
 sdb: unknown partition table
sd 2:0:1:0: [sdb] Cache data unavailable
sd 2:0:1:0: [sdb] Assuming drive cache: write through
sd 2:0:1:0: [sdb] Attached SCSI disk

# lsblk
NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
sr0 11:01 1024M  0 rom
sda  8:00   16G  0 disk
├─sda1   8:10  500M  0 part /boot
└─sda2   8:20 15.5G  0 part
  ├─vg_svfisc6test5-lv_root (dm-0) 253:00  9.6G  0 lvm  /
  └─vg_svfisc6test5-lv_swap (dm-1) 253:10  5.9G  0 lvm  [SWAP]
sdb  8:16   0   16G  0 disk

and I note this VM is *not* running vmware tools

NEITHER of these two VMs required rebooting or any echo "- - -" 
>/sys/scsi/.. stuffs.



--
john r pierce, recycling bits in santa cruz

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[John R Pierce]

On 11/4/2015 12:52 PM, Boris Epstein wrote:

I don't get this for some reason... not even sure why. ESXi's default
behaviour seems to be to allow hotplug, that does not seem to be
deactivated. I am just not sure. Wonder if this could be the Centos 7 vs 6
- perhaps that is what I ought to test for.


what virtual SCSI controller type are you using for these VM's? Mine are 
'paravirtual'.


--
john r pierce, recycling bits in santa cruz

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

>>
> vmware esxi 5.5.0 (free, using vsphere client to manage), vm is minimal
> centos 7 64bit.   I added a 16gb vdisk and immediately see this in dmesg...
>
> [155484.386792] vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5)
> [155484.386796] vmw_pvscsi: msg: device added at scsi0:1:0
> [155484.388250] scsi 0:0:1:0: Direct-Access VMware   Virtual disk
>  1.0  PQ: 0 ANSI: 2
> [155484.391275] sd 0:0:1:0: [sdb] 33554432 512-byte logical blocks: (17.1
> GB/16.0 GiB)
> [155484.391552] sd 0:0:1:0: [sdb] Write Protect is off
> [155484.391556] sd 0:0:1:0: [sdb] Mode Sense: 61 00 00 00
> [155484.391593] sd 0:0:1:0: [sdb] Cache data unavailable
> [155484.391595] sd 0:0:1:0: [sdb] Assuming drive cache: write through
> [155484.396148]  sdb: unknown partition table
> [155484.396356] sd 0:0:1:0: [sdb] Attached SCSI disk
>
> and lsblk shows...
>
> # lsblk
> NAME  MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> sda 8:00   32G  0 disk
> 
> sdb 8:16   0   16G  0 disk
> ...
>
> so I can immediately...
>
> # mkfs.xfs /dev/sdb
> meta-data=/dev/sdb   isize=256agcount=4, agsize=1048576
> blks
> .
> # mount /dev/sdb /mnt
> #
>
> (normally, I'd partition and lvm it, this is just for demo)
> I'm using a paravirtual scsi controller, and have previously installed
> open-vm-tools via yum.
>
> I then umounted it, and in vsphere deleted the vdisk and dmesg immediately
> shows...
>
> [155820.730477] vmw_pvscsi: msg type: 0x1 - MSG RING: 2/1 (5)
> [155820.730481] vmw_pvscsi: msg: device removed at scsi0:1:0
> [155820.754176] sd 0:0:0:0: Attached scsi generic sg0 type 0
> [155820.754247] sr 2:0:0:0: Attached scsi generic sg1 type 5
>
>
> I also did much the same with a CentOS 6.7 VM, also using a 'paravirtual
> SCSI' vm on the same esxi host, when I added the vdisk, it immediately
> shows...
>
> # dmesg
> .
> vmw_pvscsi: msg type: 0x0 - MSG RING: 1/0 (5)
> vmw_pvscsi: msg: device added at scsi0:1:0
> scsi 2:0:1:0: Direct-Access VMware   Virtual disk 1.0  PQ: 0 ANSI:
> 2
> sd 2:0:1:0: Attached scsi generic sg2 type 0
> sd 2:0:1:0: [sdb] 33554432 512-byte logical blocks: (17.1 GB/16.0 GiB)
> sd 2:0:1:0: [sdb] Write Protect is off
> sd 2:0:1:0: [sdb] Mode Sense: 61 00 00 00
> sd 2:0:1:0: [sdb] Cache data unavailable
> sd 2:0:1:0: [sdb] Assuming drive cache: write through
> sd 2:0:1:0: [sdb] Cache data unavailable
> sd 2:0:1:0: [sdb] Assuming drive cache: write through
>  sdb: unknown partition table
> sd 2:0:1:0: [sdb] Cache data unavailable
> sd 2:0:1:0: [sdb] Assuming drive cache: write through
> sd 2:0:1:0: [sdb] Attached SCSI disk
>
> # lsblk
> NAME   MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
> sr0 11:01 1024M  0 rom
> sda  8:00   16G  0 disk
> ├─sda1   8:10  500M  0 part /boot
> └─sda2   8:20 15.5G  0 part
>   ├─vg_svfisc6test5-lv_root (dm-0) 253:00  9.6G  0 lvm  /
>   └─vg_svfisc6test5-lv_swap (dm-1) 253:10  5.9G  0 lvm  [SWAP]
> sdb  8:16   0   16G  0 disk
>
> and I note this VM is *not* running vmware tools
>
> NEITHER of these two VMs required rebooting or any echo "- - -"
> >/sys/scsi/.. stuffs.
>
>
> --
> john r pierce, recycling bits in santa cruz
>
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>


John,

Thanks for your input.

I don't get this for some reason... not even sure why. ESXi's default
behaviour seems to be to allow hotplug, that does not seem to be
deactivated. I am just not sure. Wonder if this could be the Centos 7 vs 6
- perhaps that is what I ought to test for.

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

On Wed, Nov 4, 2015 at 1:57 PM,  wrote:

> Boris Epstein wrote:
> >>
> >> My turn for a dumb question: from not paying a lot of attention to this
> >> thread, the answer isn't clear to me: has the *host* recognized the
> >> disk? If not, the guest's not going to see it.
> >
> > IMO your question is not dumb at all. Unfortunately, I don't have an
> > answer to it.
> >
> > All I know is, you reboot the VM and it all works as expected.
>
> Ok, if rebooting the VM, and *only* the VM, fixes it in the VM, then the
> host - the system the VM's running on - knows about the drive. You see
> where I was going with that
>
>mark
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

Mark,

Absolutely, I see your point. This was the starting point - you add the
device on the ESXi server, you reboot the VM, the VM sees the device, no
problem. Now, I ask - do I have to reboot the VM? Logically I hope there
ought to be a way for me not to have to do that - but I have yet to figure
out how to get there.

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[m . roth]

Boris Epstein wrote:
>>
>> My turn for a dumb question: from not paying a lot of attention to this
>> thread, the answer isn't clear to me: has the *host* recognized the
>> disk? If not, the guest's not going to see it.
>
> IMO your question is not dumb at all. Unfortunately, I don't have an
> answer to it.
>
> All I know is, you reboot the VM and it all works as expected.

Ok, if rebooting the VM, and *only* the VM, fixes it in the VM, then the
host - the system the VM's running on - knows about the drive. You see
where I was going with that

   mark

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Tnjulius]

Hi Boris,
Just rescan the scsi host.
#scsi-rescan #if you have sg3_utils package
#lsscsi 
Or
#echo "- - -" > /sys/class/scsi_host/host[n]/scan

Julius

> On Nov 4, 2015, at 15:31, Boris Epstein  wrote:
> 
> Hello all,
> 
> Is there a way to recognize a hot-plugged disk (i.e., to get the system to
> recognize it and build the appropriate /dev/sd* device for the new device)
> without a reboot?
> 
> Thanks.
> 
> Boris.
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

Hello Julius,

Thanks - but it doesn't seem to work.

I installed sg3_utils and ran
#scsi-rescan

but that seemed to have done nothing for some reason.

Cheers,

Boris.


On Wed, Nov 4, 2015 at 10:12 AM, Tnjulius  wrote:

> Hi Boris,
> Just rescan the scsi host.
> #scsi-rescan #if you have sg3_utils package
> #lsscsi
> Or
> #echo "- - -" > /sys/class/scsi_host/host[n]/scan
>
> Julius
>
> > On Nov 4, 2015, at 15:31, Boris Epstein  wrote:
> >
> > Hello all,
> >
> > Is there a way to recognize a hot-plugged disk (i.e., to get the system
> to
> > recognize it and build the appropriate /dev/sd* device for the new
> device)
> > without a reboot?
> >
> > Thanks.
> >
> > Boris.
> > ___
> > CentOS mailing list
> > CentOS@centos.org
> > https://lists.centos.org/mailman/listinfo/centos
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[zep]

On 11/04/2015 10:27 AM, Mauricio Tavares wrote:
> On Wed, Nov 4, 2015 at 10:22 AM, Boris Epstein  wrote:
>> Hello Julius,
>>
>> Thanks - but it doesn't seem to work.
>>
>> I installed sg3_utils and ran
>> #scsi-rescan
>>
>> but that seemed to have done nothing for some reason.
>>
>   Dumb question: did dmesg even bother to notice *something* was attached?

possibly dumb question, possibly unintentionally insulting your
intelligence...
you know that when he said "run # scsi-rescan" that meant 'type in
"scsi-rescan" as the root user', right?  and not '#scsi-rescan'?  
#anything will always appear to do nothing as the shell thinks you're
typing in a comment.I only ask because I've never seen anyone
respond with "I ran #command".


>
>> Cheers,
>>
>> Boris.
>>
>

-- 
public gpg key id: 1362BA1A

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

On Wed, Nov 4, 2015 at 11:03 AM, Jonathan Billings 
wrote:

> On Wed, Nov 04, 2015 at 05:39:59PM +0200, Eero Volotinen wrote:
> > I think, this is possible with scsi disks
> >
> >
> http://www.cyberciti.biz/tips/vmware-add-a-new-hard-disk-without-rebooting-guest.html
>
> While I believe that this URL has technically correct advice, it's
> basically doing a subset of the commands in the scsi-rescan script in
> the sg3_utils package.
>
> I wonder if you need to be running the vmware tools for the kernel to
> detect new devices?
>
> --
> Jonathan Billings 
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

Jonathan,

Thanks, good point. I do have VMware tools running on the VM, though.

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Mauricio Tavares]

On Wed, Nov 4, 2015 at 10:22 AM, Boris Epstein  wrote:
> Hello Julius,
>
> Thanks - but it doesn't seem to work.
>
> I installed sg3_utils and ran
> #scsi-rescan
>
> but that seemed to have done nothing for some reason.
>
  Dumb question: did dmesg even bother to notice *something* was attached?

> Cheers,
>
> Boris.
>
>
> On Wed, Nov 4, 2015 at 10:12 AM, Tnjulius  wrote:
>
>> Hi Boris,
>> Just rescan the scsi host.
>> #scsi-rescan #if you have sg3_utils package
>> #lsscsi
>> Or
>> #echo "- - -" > /sys/class/scsi_host/host[n]/scan
>>
>> Julius
>>
>> > On Nov 4, 2015, at 15:31, Boris Epstein  wrote:
>> >
>> > Hello all,
>> >
>> > Is there a way to recognize a hot-plugged disk (i.e., to get the system
>> to
>> > recognize it and build the appropriate /dev/sd* device for the new
>> device)
>> > without a reboot?
>> >
>> > Thanks.
>> >
>> > Boris.
>> > ___
>> > CentOS mailing list
>> > CentOS@centos.org
>> > https://lists.centos.org/mailman/listinfo/centos
>> ___
>> CentOS mailing list
>> CentOS@centos.org
>> https://lists.centos.org/mailman/listinfo/centos
>>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Eero Volotinen]

Hi,

I think, this is possible with scsi disks

http://www.cyberciti.biz/tips/vmware-add-a-new-hard-disk-without-rebooting-guest.html

Eero
4.11.2015 4.32 ip. "Boris Epstein"  kirjoitti:

> Hello all,
>
> Is there a way to recognize a hot-plugged disk (i.e., to get the system to
> recognize it and build the appropriate /dev/sd* device for the new device)
> without a reboot?
>
> Thanks.
>
> Boris.
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

>
>
>
> was the controller you added the virtual disk to an IDE or scsi controller?
>
> --
> public gpg key id: 1362BA1A
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

It was a SCSI controller.

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[zep]

On 11/04/2015 11:05 AM, Boris Epstein wrote:
> On Wed, Nov 4, 2015 at 11:03 AM, Jonathan Billings 
> wrote:
>
>> On Wed, Nov 04, 2015 at 05:39:59PM +0200, Eero Volotinen wrote:
>>> I think, this is possible with scsi disks
>>>
>>>
>> http://www.cyberciti.biz/tips/vmware-add-a-new-hard-disk-without-rebooting-guest.html
>>
>> While I believe that this URL has technically correct advice, it's
>> basically doing a subset of the commands in the scsi-rescan script in
>> the sg3_utils package.
>>
>> I wonder if you need to be running the vmware tools for the kernel to
>> detect new devices?
>>
>> --
>> Jonathan Billings 
>> ___
>> CentOS mailing list
>> CentOS@centos.org
>> https://lists.centos.org/mailman/listinfo/centos
>>
> Jonathan,
>
> Thanks, good point. I do have VMware tools running on the VM, though.
>
> Boris.
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos

was the controller you added the virtual disk to an IDE or scsi controller?

-- 
public gpg key id: 1362BA1A

___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

On Wed, Nov 4, 2015 at 11:29 AM, Eero Volotinen 
wrote:

> It should work fine. What esxi version you are using?
>
> Eero
> 4.11.2015 6.27 ip. "Boris Epstein"  kirjoitti:
>
>
Eero,

I know. It is EXSi 5.5

Thanks.

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

Zep,

Thanks - nothing insulting about asking questions.

I did run this command as root as I would never run stuff like this as any
other user (or, perhaps, I'd use sudo if so forced).

dmesg did not seem to detect the device addition, no.

Cheers,

Boris.


On Wed, Nov 4, 2015 at 10:32 AM, zep  wrote:

>
>
> On 11/04/2015 10:27 AM, Mauricio Tavares wrote:
> > On Wed, Nov 4, 2015 at 10:22 AM, Boris Epstein 
> wrote:
> >> Hello Julius,
> >>
> >> Thanks - but it doesn't seem to work.
> >>
> >> I installed sg3_utils and ran
> >> #scsi-rescan
> >>
> >> but that seemed to have done nothing for some reason.
> >>
> >   Dumb question: did dmesg even bother to notice *something* was
> attached?
>
> possibly dumb question, possibly unintentionally insulting your
> intelligence...
> you know that when he said "run # scsi-rescan" that meant 'type in
> "scsi-rescan" as the root user', right?  and not '#scsi-rescan'?
> #anything will always appear to do nothing as the shell thinks you're
> typing in a comment.I only ask because I've never seen anyone
> respond with "I ran #command".
>
>
> >
> >> Cheers,
> >>
> >> Boris.
> >>
> >
>
> --
> public gpg key id: 1362BA1A
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Jonathan Billings]

On Wed, Nov 04, 2015 at 05:39:59PM +0200, Eero Volotinen wrote:
> I think, this is possible with scsi disks
> 
> http://www.cyberciti.biz/tips/vmware-add-a-new-hard-disk-without-rebooting-guest.html

While I believe that this URL has technically correct advice, it's
basically doing a subset of the commands in the scsi-rescan script in
the sg3_utils package.

I wonder if you need to be running the vmware tools for the kernel to
detect new devices?

-- 
Jonathan Billings 
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Eero Volotinen]

It should work fine. What esxi version you are using?

Eero
4.11.2015 6.27 ip. "Boris Epstein"  kirjoitti:

> >
> >
> >
> > was the controller you added the virtual disk to an IDE or scsi
> controller?
> >
> > --
> > public gpg key id: 1362BA1A
> >
> > ___
> > CentOS mailing list
> > CentOS@centos.org
> > https://lists.centos.org/mailman/listinfo/centos
> >
>
> It was a SCSI controller.
>
> Boris.
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Julius Tchanque]

@Boris:
If you have CentOS 6 + ESXi5.5, it should normally work fine.
Have you retry the operation by adding another vDisk? monitor
/var/log/messages

Julius

2015-11-04 17:34 GMT+01:00 Boris Epstein :

> On Wed, Nov 4, 2015 at 11:29 AM, Eero Volotinen 
> wrote:
>
> > It should work fine. What esxi version you are using?
> >
> > Eero
> > 4.11.2015 6.27 ip. "Boris Epstein"  kirjoitti:
> >
> >
> Eero,
>
> I know. It is EXSi 5.5
>
> Thanks.
>
> Boris.
>
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Rainer Traut]

Am 04.11.2015 um 17:26 schrieb Boris Epstein:


It was a SCSI controller.




It usually works very nice here,
Have you added only the disk or by accident another scsi controller?
This happens (you probably know) if you select another bus while 
creating the disc.


VG Rainer
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

>
>
> It usually works very nice here,
> Have you added only the disk or by accident another scsi controller?
> This happens (you probably know) if you select another bus while creating
> the disc.
>
> VG Rainer
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

Rainer,

Thanks.

It looks like I just created another disk on the same controller as I
intended - and once I rebooted the VM it worked just fine - I got my disks
(/dev/sda through /dev/sdd) accessible and functional.

Cheers,

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[m . roth]

Boris Epstein wrote:
> Hello Julius,
>
> Thanks - but it doesn't seem to work.
>
> I installed sg3_utils and ran
> #scsi-rescan
>
> but that seemed to have done nothing for some reason.
>
My turn for a dumb question: from not paying a lot of attention to this
thread, the answer isn't clear to me: has the *host* recognized the disk?
If not, the guest's not going to see it.

  mark



___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos

Re: [CentOS] getting a CentOS6 VM on VMware ESXi platform to recognize a new disk device

[Boris Epstein]

>
>
> My turn for a dumb question: from not paying a lot of attention to this
> thread, the answer isn't clear to me: has the *host* recognized the disk?
> If not, the guest's not going to see it.
>
>   mark
>
>
>
> ___
> CentOS mailing list
> CentOS@centos.org
> https://lists.centos.org/mailman/listinfo/centos
>

Mark,

IMO your question is not dumb at all. Unfortunately, I don't have an answer
to it.

All I know is, you reboot the VM and it all works as expected.

Cheers,

Boris.
___
CentOS mailing list
CentOS@centos.org
https://lists.centos.org/mailman/listinfo/centos