Bug 606519

Summary: /dev/mapper/pdc_efihghgip1 on / ?
Product: [Fedora] Fedora Reporter: Eddie Lania <eddie>
Component: dmraidAssignee: LVM and device-mapper development team <lvm-team>
Status: CLOSED NOTABUG QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: low    
Version: 13CC: agk, bmr, dwysocha, hdegoede, heinzm, lvm-team, mbroz, prockai
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2010-06-22 07:19:05 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Eddie Lania 2010-06-21 20:38:37 UTC 
Description of problem: 

I think this is more a question then a bug.

After doing a clean install of Fedora 13 on a system with two disks in a raid1 configuration on a Fasttrak Tx2000 firmware/bios fake raid controller (yeah I know that's cheap), the file system is mounted on /dev/mapper/pdc_efihghgip1.

Is this supposed to be so?

I mean, when I look at the output of the dmevent_tool:

dmevent_tool -mu
pdc_efihghgip2 not monitored
pdc_efihghgip1 not monitored
pdc_efihghgi not monitored


I see that both disks are being displayed as pdc_efihghgip1 and pdc_efihghgip2, but what is then pdc_efihghgi ?

Is that the actual raid device? And is it not supposed to be mounted instead?

It is not clear to me how things work in this case and I searched for more information but failed to find any.



Version-Release number of selected component (if applicable):

dmraid-events-logwatch-1.0.0.rc16-12.fc13.i686
dmraid-events-1.0.0.rc16-12.fc13.i686
dmraid-1.0.0.rc16-12.fc13.i686

How reproducible: Allways


Steps to Reproduce:
1. Install F13 on fasttrak mirrored array.
2.
3.
  
Actual results: / mounted on /dev/mapper/pdc_efihghgip1


Expected results: / mounted on /dev/mapper/pdc_efihghgip ?


Additional info:
Comment 1 Hans de Goede 2010-06-22 07:19:05 UTC 
(In reply to comment #0)
> Description of problem: 
> 
> I think this is more a question then a bug.
> 

I think so too, so let me answer it and then close this bug :)

> After doing a clean install of Fedora 13 on a system with two disks in a raid1
> configuration on a Fasttrak Tx2000 firmware/bios fake raid controller (yeah I
> know that's cheap), the file system is mounted on /dev/mapper/pdc_efihghgip1.
> 
> Is this supposed to be so?
> 
> I mean, when I look at the output of the dmevent_tool:
> 
> dmevent_tool -mu
> pdc_efihghgip2 not monitored
> pdc_efihghgip1 not monitored
> pdc_efihghgi not monitored
> 

This is really quite simple,
/dev/mapper/pdc_efihghgi

Is the entire set, just think of it as a virtual disk and just like a real disk
it has a partition table and partitions on it.

/dev/mapper/pdc_efihghgip1
is the first partition usually (*) this contains /boot and is mounted as /boot
/dev/mapper/pdc_efihghgip2
Is the second partition usually (*) this contains one big physical volume on top
of which a Volume group is build which contains logical volumes for
/, /home and swap.

*) usually means when you used auto partitioning during the installation if you did a custom install things can be very different.

Regards,

Hans