Bug 812726 - "lvcreate -l 100%FREE -T vg/thin-pool" returns error
"lvcreate -l 100%FREE -T vg/thin-pool" returns error
Product: Fedora
Classification: Fedora
Component: lvm2 (Show other bugs)
x86_64 Linux
low Severity low
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Assigned To: Zdenek Kabelac
Fedora Extras Quality Assurance
Depends On:
Blocks: 998347 1003496
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Reported: 2012-04-16 01:59 EDT by Xiaowei Li
Modified: 2015-01-26 19:10 EST (History)
14 users (show)

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
: 998347 (view as bug list)
Last Closed: 2014-02-05 17:45:37 EST
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
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Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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Description Xiaowei Li 2012-04-16 01:59:16 EDT
Description of problem:
when invoking "lvcreate -l 100%FREE -T vg/thin-pool", lvm should allocate all the free PE to the thin pool ( 1 PE for metadata, others for data block ).

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

How reproducible:

# vgdisplay vg3
  --- Volume group ---
  VG Name               vg3
  System ID             
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  1
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                0
  Open LV               0
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               1020.00 MiB
  PE Size               4.00 MiB
  Total PE              255
  Alloc PE / Size       0 / 0   
  Free  PE / Size       255 / 1020.00 MiB
  VG UUID               X8FHfz-ezqW-FIaW-A0Dx-uPnX-bUPl-k3Meez
#lvcreate -l 100%FREE -T vg3/pool
  Rounding up size to full physical extent 4.00 MiB
  Insufficient suitable allocatable extents for logical volume pool: 255 more required

Actual results:
"lvcreate -l 100%FREE -T vg3/pool" return error

Expected results:
should create 255 PE to the thin pool and 254 PE as the data block.

Additional info:
Comment 1 Xiaowei Li 2012-04-16 02:01:07 EDT
The 100%FREE option works well to create a liner volume so should also work well to create the thin pool.

[root@laker ~]# lvcreate -l 100%FREE -n vg3/lv
  Logical volume "lv" created
[root@laker ~]# lvs vg3
  LV   VG   Attr     LSize    Pool Origin Data%  Move Log Copy%  Convert
  lv   vg3  -wi-a--- 1020.00m
Comment 2 Xiaowei Li 2012-04-16 02:03:42 EDT
please ignore '( 1 PE for metadata, others for data block )' in 'DESCRIPTION' field.
Comment 3 Alasdair Kergon 2012-04-16 11:39:09 EDT
Yes, we ought to fix this one.
Comment 4 joshua 2012-09-25 18:15:37 EDT
Is this still an issue in F18 Alpha1?
Comment 5 Xiaowei Li 2012-09-27 03:03:59 EDT
(In reply to comment #4)
> Is this still an issue in F18 Alpha1?

Yes, it still exists in lvm2-2.02.97-1.fc18.x86_64
Comment 6 Fedora End Of Life 2013-12-21 10:01:49 EST
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Comment 7 Fedora End Of Life 2014-02-05 17:45:37 EST
Fedora 18 changed to end-of-life (EOL) status on 2014-01-14. Fedora 18 is
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