[linux-lvm] LVM Problems :)
Christian Reiss
email at demonlord.de
Fri Feb 13 13:13:04 UTC 2004
Greetings again,
Yes, of course it was not a rogue lvm ;)
Fun is a must, eh?
Anyway,
Here is my recipe of shrinking the lvm.
I hope i got it right, now with the e2fsadm thingy:
1. unmount it
2. e2fsadm -L-(SIZE)G /dev/share/data
3. pvmove /dev/(HDD)
4. vgchange -a n ; vgchange -x y
5. vgreduce share /dev/(HDD)
6. vgchange -x n ; vgchange -a y
7. fdisk /dev/(HDD)
8. mkfs.ext2 auf /dev/(HDD)
9. Copy files to reduce data amount on LVM
10. repeat
Or am i missing anything? :)
If not, i will spent some hours of GREAT FUN
shrinking it. Ahh, the fsck's, movings and.. :)
-Christian.
BTW: Awesome support! :)
Heinz Mauelshagen wrote:
> On Fri, Feb 13, 2004 at 06:06:59PM +0100, Christian Reiss wrote:
>
>>Greetings again,
>>
>>Curious, I replied, but did not recive a copy of my reply,
>>maybe it got lost in the internet? :) Killed by a rogue lvm,
>>I assume ;) - If this was/is only me missing my reply, then
>>I am deeply sorry for spamming - not intentionally, really.
>
>
> Christian,
>
> as long as you agree that it wasn't LVM it is no problem ;-)
>
>
>>---
>>
>>Hi there!
>>
>>Big thanks for the very fast answer!!
>>Much appreciated!
>>
>>Just to be VERY sure, tune2fs -l says:
>>
>
> <SNIP>
>
>>Block count: 250576896
>
> <SNIP>
>
>>Block size: 4096
>
> <SNIP>
>
>>So What lvreduce size should i use to shrink it?
>>I better have a guru look over it, better safe than
>>sorry
>
>
> 250576896 * 4KB / 1024MB/KB= 978816MB (which is a multiple of 32MB)
>
> ->
>
> # lvreduce -L 978816M /dev/share/data
>
> That should free 112640MB or 3520 PEs in your VG.
>
>
> BTW: you should either run e2fsadm to grow/shrink the unmounted
> filesystem _and_ the logical volume in one go
> -or-
> use the filesystem resizer and lvextend/lvreduce in the correct order
> (lvextend + grow fs -or- shrink fs + lvreduce).
>
> Problem with the later is getting the size arguments right ;-)
>
>
> Regards,
> Heinz -- The LVM Guy --
>
>
>
>
>>-Christian.
>>
>>Heinz Mauelshagen wrote:
>>
>>
>>>Christian,
>>>
>>>the size of your filesystem and logical volume differs already.
>>>That's why e2fsadm fails.
>>>Did you eventually run resize2fs in order to shrink the filesystem ?
>>>
>>>Your logical volume size is 1091456MB (32MB/PE * 34108 PE) but your
>>>filesystem size is 963584GB (941GB * 1024MB/GB; check with
>>>"tune2fs -l" and look for the block count and block size to calculate
>>>this correctly).
>>>
>>>In case the result shows, that your filesystem is already smaller
>>
>>than the LV,
>>
>>>lvreduce the logical volume appropriately.
>>>
>>>Use the block count * block size result and round it up to the next PE!
>>>
>>>Regards,
>>>Heinz -- The LVM Guy --
>>>
>>>
>>>
>>>
>>>On Fri, Feb 13, 2004 at 03:06:28PM +0100, Christian Reiss wrote:
>>>
>>>
>>>>Greetings!
>>>>
>>>>I am trying to dissolve a running LVM, so i am doing
>>>>the e2fsadm, lvreduce, pvmove thingy. But ever since I
>>>>removed the first hdd, I am unable to resize the lvm
>>>>any more. The error can be seen below, with e2fsadm.
>>>>I also included the vg&lvdisplay commands.
>>>>
>>>>I am running the LVM1 sources (non-cvs, approx mid last
>>>>year), as i am unable to run LVM2 (need to downgrade kernel
>>>>to 2.4.22 (no patch included in lvm2 for 2.4.23)).
>>>>Also, I am (too dumb/unable) to locate a e2fsadm alike
>>>>tool for lvm2, as e2fsadm needs the lvm-tab thingy,
>>>>which lvm2 no longer provides.
>>>>
>>>>Any help is greatly appreciated.
>>>>
>>>>-Christian.
>>>>
>>>>
>>>>::::::::::::::::::
>>>>::: vgdisplay ::::
>>>>
>>>>--- Volume group ---
>>>>VG Name share
>>>>VG Access read/write
>>>>VG Status available/NOT resizable
>>>>VG # 0
>>>>MAX LV 256
>>>>Cur LV 1
>>>>Open LV 1
>>>>MAX LV Size 2 TB
>>>>Max PV 256
>>>>Cur PV 11
>>>>Act PV 11
>>>>VG Size 1.12 TB
>>>>PE Size 32 MB
>>>>Total PE 36668
>>>>Alloc PE / Size 34108 / 1.04 TB
>>>>Free PE / Size 2560 / 80 GB
>>>>VG UUID PSYbaQ-bl8d-xvHp-6re2-hoKd-9mE5-Wa5Tqz
>>>>
>>>>:::::::::::::::
>>>>:: lvdisplay ::
>>>>
>>>>--- Logical volume ---
>>>>LV Name /dev/share/data
>>>>VG Name share
>>>>LV Write Access read/write
>>>>LV Status available
>>>>LV # 1
>>>># open 1
>>>>LV Size 1.04 TB
>>>>Current LE 34108
>>>>Allocated LE 34108
>>>>Allocation next free
>>>>Read ahead sectors 1024
>>>>Block device 58:0
>>>>
>>>>:::::::::::::
>>>>:: e2fsadm ::
>>>>
>>>>e2fsadm -L-10G /dev/share/data
>>>>e2fsadm -- logical volume size for "/dev/share/data" invalid
>>>>
>>>>:::::::::::
>>>>:: df -h ::
>>>>
>>>>Filesystem Size Used Avail Use% Mounted on
>>>>/dev/share/data 941G 910G 32G 97% /share/filebase
>>>>
>>>>
>>>>--
>>>>Christian Reiss <email at demonlord.de>
>>>>demonserver.de
>>>>
>>>>Key fingerprint = 2999 B7CD A218 06DF D658 5BE3 18B6 B232 02FF 71B2
>>>>Public Key can be obtained here: http://www.demonlord.de/pgp.txt
>>>
>>>
>>>
>>>*** Software bugs are stupid.
>>> Nevertheless it needs not so stupid people to solve them ***
>>>
>>>
>>
>>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>>
>>>Heinz Mauelshagen Red Hat, Inc.
>>>Consulting Development Engineer Am Sonnenhang 11
>>> 56242 Marienrachdorf
>>> Germany
>>>Mauelshagen at RedHat.com +49 2626 141200
>>> FAX 924446
>>>
>>
>>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>>
>>>_______________________________________________
>>>linux-lvm mailing list
>>>linux-lvm at redhat.com
>>>https://www.redhat.com/mailman/listinfo/linux-lvm
>>>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>
>>
>>--
>>Christian Reiss <email at demonlord.de>
>>demonserver.de
>>
>>Key fingerprint = 2999 B7CD A218 06DF D658 5BE3 18B6 B232 02FF 71B2
>>Public Key can be obtained here: http://www.demonlord.de/pgp.txt
>
>
> *** Software bugs are stupid.
> Nevertheless it needs not so stupid people to solve them ***
>
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> Heinz Mauelshagen Red Hat, Inc.
> Consulting Development Engineer Am Sonnenhang 11
> 56242 Marienrachdorf
> Germany
> Mauelshagen at RedHat.com +49 2626 141200
> FAX 924446
> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm at redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
--
Christian Reiss <email at demonlord.de>
demonserver.de
Key fingerprint = 2999 B7CD A218 06DF D658 5BE3 18B6 B232 02FF 71B2
Public Key can be obtained here: http://www.demonlord.de/pgp.txt
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