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From: Adam Puleo <adam.puleo@icloud.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] Replace Drive in RAID6
Date: Mon, 8 Nov 2021 00:06:31 -0700	[thread overview]
Message-ID: <446C99D5-736F-405A-A75C-7F37F746CE51@icloud.com> (raw)
In-Reply-To: <530F35A9-87FD-4850-BB9E-0E22857F178C@icloud.com>

Hello Everyone,

Since the sub-LV #0 has errored, LVM will not let me activate the logical volume.

Is there a way to remap the #0 sub-LV to the replaced disk or resizing the RAID6 to one less disk?

Thank you,
-Adam


On Nov 4, 2021, at 7:21 PM, Adam Puleo <adam.puleo@icloud.com> wrote:

Hello Andreas,

After deactivating each of the individual rmage and rmeta volumes I receive this error:
# lvchange -a y --activationmode degraded vg_data/lv_data
 device-mapper: reload ioctl on  (253:12) failed: Invalid argument

In messages I see the following errors:
Nov  4 19:19:43 nas kernel: device-mapper: raid: Failed to read superblock of device at position 0
Nov  4 19:19:43 nas kernel: device-mapper: raid: New device injected into existing raid set without 'delta_disks' or 'rebuild' parameter specified
Nov  4 19:19:43 nas kernel: device-mapper: table: 253:12: raid: Unable to assemble array: Invalid superblocks
Nov  4 19:19:43 nas kernel: device-mapper: ioctl: error adding target to table

Am I not adding the new drive to the RAID correctly? I first did a pvcreate and then a vgextend.

I was using the —rebuild option because I know which physical drive is bad. In the lvmraid man page it says —repair might not know which is the correct block to use so to use —rebuild.

Thank you,
-Adam



On Nov 3, 2021, at 7:25 AM, Andreas Schrägle <linux-lvm@ajs124.de> wrote:

On Tue, 2 Nov 2021 22:56:18 -0700
Adam Puleo <adam.puleo@icloud.com> wrote:

> Hello,
> 
> One of my drives failed in my RAID6 and I’m trying to replace it without success.
> 
> I’m trying to rebuild the failed drive (/dev/sda): lvchange --rebuild /dev/sda vg_data
> 
> But I’m receiving the error: vg_data/lv_data must be active to perform this operation.
> 
> I have tried to activate the logical volume without success.
> 
> How do I go about activating the volume so that I can rebuild the failed drive?
> 
> Thanks,
> -Adam
> 
> # lvs -a -o name,segtype,devices
> LV                       Type   Devices                                                                                            
> lv_data                  raid6  lv_data_rimage_0(0),lv_data_rimage_1(0),lv_data_rimage_2(0),lv_data_rimage_3(0),lv_data_rimage_4(0)
> [lv_data_rimage_0]       error                                                                                                     
> [lv_data_rimage_1]       linear /dev/sdc1(1)                                                                                       
> [lv_data_rimage_2]       linear /dev/sdb1(1)                                                                                       
> [lv_data_rimage_3]       linear /dev/sdf1(1)                                                                                       
> [lv_data_rimage_4]       linear /dev/sde1(2)                                                                                       
> [lv_data_rmeta_0]        error                                                                                                     
> [lv_data_rmeta_1]        linear /dev/sdc1(0)                                                                                       
> [lv_data_rmeta_2]        linear /dev/sdb1(0)                                                                                       
> [lv_data_rmeta_3]        linear /dev/sdf1(0)                                                                                       
> [lv_data_rmeta_4]        linear /dev/sde1(0)                                                                                       
> 
> # lvs -a
> LV                       VG            Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
> lv_data                  vg_data       rwi---r--- 990.00g                                                    
> [lv_data_rimage_0]       vg_data       vwi-a-r-r- 330.00g                                                    
> [lv_data_rimage_1]       vg_data       Iwi-a-r-r- 330.00g                                                    
> [lv_data_rimage_2]       vg_data       Iwi-a-r-r- 330.00g                                                    
> [lv_data_rimage_3]       vg_data       Iwi-a-r-r- 330.00g                                                    
> [lv_data_rimage_4]       vg_data       Iwi-a-r-r- 330.00g                                                    
> [lv_data_rmeta_0]        vg_data       ewi-a-r-r-   4.00m                                                    
> [lv_data_rmeta_1]        vg_data       ewi-a-r-r-   4.00m                                                    
> [lv_data_rmeta_2]        vg_data       ewi-a-r-r-   4.00m                                                    
> [lv_data_rmeta_3]        vg_data       ewi-a-r-r-   4.00m                                                    
> [lv_data_rmeta_4]        vg_data       ewi-a-r-r-   4.00m                                                    
> 
> 
> 
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://listman.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

Hello Adam,

how exactly have you tried to activate the LV so far?

lvchange with --activationmode degraded should work, no?

Also, are you sure that --rebuild is the correct operation?

man 7 lvmraid suggest you might want --repair or --replace instead.

Best Regards


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read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/


_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://listman.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/


_______________________________________________
linux-lvm mailing list
linux-lvm@redhat.com
https://listman.redhat.com/mailman/listinfo/linux-lvm
read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

  reply	other threads:[~2021-11-08  7:07 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-03  5:56 [linux-lvm] Replace Drive in RAID6 Adam Puleo
2021-11-03  6:41 ` Roberto Fastec
2021-11-03 14:25 ` Andreas Schrägle
2021-11-05  2:21   ` Adam Puleo
2021-11-08  7:06     ` Adam Puleo [this message]
2021-11-16 17:41       ` Heinz Mauelshagen
2021-11-16 17:46         ` Heinz Mauelshagen
2021-11-20  7:15           ` Adam Puleo

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