[linux-lvm] pvmove: Physical Volume "/dev/sdc1" not found in Volume Group + minor bug

[linux-lvm] pvmove: Physical Volume "/dev/sdc1" not found in Volume Group + minor bug

[Linda A. Walsh]

I'm trying to move an LV from one VG on 1 PV to another VG on another PV,
but it doesn't seem to like my syntax. Isn't it: " -n LV FROMPV TOPV"

>  sudo pvmove -n Win /dev/sda1 /dev/sdc1
  Physical Volume "/dev/sdc1" not found in Volume Group "HnS"


Pertinent details:
>  lvs  #(From volume in HnS)
  LV                       VG      Attr      LSize  
  Sys                      HnS     -wc-a----  96.00g

>  pvs  #(from VG HnS on PV /dev/sda1, destination PV = /dev/sdc1
  PV         VG      Fmt  Attr PSize  PFree
  /dev/sda1  HnS     lvm2 a--  21.83t 10.20t
  /dev/sdc1  Data    lvm2 a--  43.66t 39.46t

----
Before I got to that point:
>  sudo pvmove -n Win /dev/sda1 /dev/sdc1
  Required device-mapper target(s) not detected in your kernel
(for some reason kernel module isn't auto-loaded???  (the minor bug..))
So:
>  sudo modprobe dm-mirror

-- Don't know if any other modules are needed?  I have:
>  ls -d  /sys/module/dm*
/sys/module/dm_bufio/  /sys/module/dm_mirror/  /sys/module/dm_region_hash/
/sys/module/dm_log/    /sys/module/dm_mod/     /sys/module/dm_snapshot/
---
Available (not loaded):
>  sudo modprobe dm-<COMPLETE>
dm-bio-prison       dm-raid             dm-zero
dm-persistent-data  dm-thin-pool

I'm assuming I only needed the dm-mirror so it could do the
mirroring?  What syntax should I be using?

Thanks!
       

Re: [linux-lvm] pvmove: Physical Volume "/dev/sdc1" not found in Volume Group + minor bug

[emmanuel segura]

first merg the two vgs using vgmerge command

2014-08-07 21:06 GMT+02:00 Linda A. Walsh <lvm@tlinx.org>:
> I'm trying to move an LV from one VG on 1 PV to another VG on another PV,
> but it doesn't seem to like my syntax. Isn't it: " -n LV FROMPV TOPV"
>
>>  sudo pvmove -n Win /dev/sda1 /dev/sdc1
>
>  Physical Volume "/dev/sdc1" not found in Volume Group "HnS"
>
>
> Pertinent details:
>>
>>  lvs  #(From volume in HnS)
>
>  LV                       VG      Attr      LSize   Sys
> HnS     -wc-a----  96.00g
>
>>  pvs  #(from VG HnS on PV /dev/sda1, destination PV = /dev/sdc1
>
>  PV         VG      Fmt  Attr PSize  PFree
>  /dev/sda1  HnS     lvm2 a--  21.83t 10.20t
>  /dev/sdc1  Data    lvm2 a--  43.66t 39.46t
>
> ----
> Before I got to that point:
>>
>>  sudo pvmove -n Win /dev/sda1 /dev/sdc1
>
>  Required device-mapper target(s) not detected in your kernel
> (for some reason kernel module isn't auto-loaded???  (the minor bug..))
> So:
>>
>>  sudo modprobe dm-mirror
>
>
> -- Don't know if any other modules are needed?  I have:
>>
>>  ls -d  /sys/module/dm*
>
> /sys/module/dm_bufio/  /sys/module/dm_mirror/  /sys/module/dm_region_hash/
> /sys/module/dm_log/    /sys/module/dm_mod/     /sys/module/dm_snapshot/
> ---
> Available (not loaded):
>>
>>  sudo modprobe dm-<COMPLETE>
>
> dm-bio-prison       dm-raid             dm-zero
> dm-persistent-data  dm-thin-pool
>
> I'm assuming I only needed the dm-mirror so it could do the
> mirroring?  What syntax should I be using?
>
> Thanks!
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/



-- 
esta es mi vida e me la vivo hasta que dios quiera

Re: [linux-lvm] vgmerge: "your closed volumes are still active"...why?

[Linda A. Walsh]

emmanuel segura wrote:
> first merg the two vgs using vgmerge command
---
thanks...urk....ok.. long way around...(want to move a house from one 
city to another,
but first must merge cities, then logical-house-move from one side of 
the city
to the other; then un-annex the old-part of the city)...;-/

Um... trying the merge, I get:

>  sudo vgmerge  -v Data HnS 
    Checking for volume group "Data"
    Checking for volume group "HnS"
  Logical volumes in "HnS" must be inactive
---
Hmm...

>lvs|grep HnS
  Media_Back               HnS     -wi-a----   8.00t
  Sys                      HnS     -wc-a----  96.00g
  Sysboot                  HnS     -wc-a----   4.00g
  Sysvar                   HnS     -wc-a----  28.00g
  Win                      HnS     -wi-a----   1.00t
  oHome                    HnS     -wi-a----   1.00t

I guess they are active.  But if they aren't open, what are they
doing?  And how do I make them inactive (I have a feeling this is
at the root of why lvremove never works without "-f" as well).

'''

Re: [linux-lvm] vgmerge: "your closed volumes are still active"...why?

[emmanuel segura]

vgchange -an HnS

2014-08-08 19:58 GMT+02:00 Linda A. Walsh <lvm@tlinx.org>:
> emmanuel segura wrote:
>>
>> first merg the two vgs using vgmerge command
>
> ---
> thanks...urk....ok.. long way around...(want to move a house from one city
> to another,
> but first must merge cities, then logical-house-move from one side of the
> city
> to the other; then un-annex the old-part of the city)...;-/
>
> Um... trying the merge, I get:
>
>>  sudo vgmerge  -v Data HnS
>
>    Checking for volume group "Data"
>    Checking for volume group "HnS"
>  Logical volumes in "HnS" must be inactive
> ---
> Hmm...
>
>> lvs|grep HnS
>
>  Media_Back               HnS     -wi-a----   8.00t
>  Sys                      HnS     -wc-a----  96.00g
>  Sysboot                  HnS     -wc-a----   4.00g
>  Sysvar                   HnS     -wc-a----  28.00g
>  Win                      HnS     -wi-a----   1.00t
>  oHome                    HnS     -wi-a----   1.00t
>
> I guess they are active.  But if they aren't open, what are they
> doing?  And how do I make them inactive (I have a feeling this is
> at the root of why lvremove never works without "-f" as well).
>
> '''
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/



-- 
esta es mi vida e me la vivo hasta que dios quiera

Re: [linux-lvm] vgmerge & move... done, not bad

[Linda A. Walsh]

emmanuel segura wrote:
> vgchange -an HnS
>   
When it is usable, it's pretty darn fast... average between 400-500MB/s --
will have to setup a test case to see how fast 'dd' would be.

For comparison using xfsdump/restore on a 7T partition
averaged 216MB/s

(Note, using binary prefixes w/binary units (B=2^3), no
misleading confusion of decimal prefixes on binary units as
comes of 'dd' in this case)

Would be "nicer" if I didn't have to do the vgmerge first
and could do a direct move from oldVG/oldLV => newVG/newLV
(Maintaining assumptions of same-sized allocation units).

Is that planned or is there some technical reason why that
wouldn't be desirable?

Thanks for assist and someone clarifying that
"active" might be better viewed as "available".

Linda