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llin 07-28-2008 07:35 AM

LVM and No Space Left On Device
 
A LV (XFS) is stuck at the 1.2TB mark and won't accept new data even though there's space available.

df -h (working LVs not shown):
Code:

Filesystem            Size  Used Avail Use% Mounted on
/dev/hda1            149G  77G  73G  52% /
/dev/mapper/fileserver-lv1
                      1.7T  1.2T  450G  73% /LV1

df -ih:
Code:

Filesystem            Inodes  IUsed  IFree IUse% Mounted on
/dev/hda1                  0      0      0    -  /
/dev/mapper/fileserver-lv1
                        1.7G    82K    1.7G    1% /LV1

pvdisplay:
Code:

  --- Physical volume ---
  PV Name              /dev/sda1
  VG Name              fileserver
  PV Size              698.64 GB / not usable 2.34 MB
  Allocatable          yes (but full)
  PE Size (KByte)      4096
  Total PE              178850
  Free PE              0
  Allocated PE          178850
  PV UUID              8aLaVo-P2lo-BbEL-k9hI-WTmw-2TeI-A1GWvh

  --- Physical volume ---
  PV Name              /dev/sdb1
  VG Name              fileserver
  PV Size              698.64 GB / not usable 2.34 MB
  Allocatable          yes (but full)
  PE Size (KByte)      4096
  Total PE              178850
  Free PE              0
  Allocated PE          178850
  PV UUID              qtueHm-czJI-elKt-QZy3-53TU-uMe1-fgVJ0g

  --- Physical volume ---
  PV Name              /dev/sdc1
  VG Name              fileserver
  PV Size              698.64 GB / not usable 2.34 MB
  Allocatable          yes
  PE Size (KByte)      4096
  Total PE              178850
  Free PE              24959
  Allocated PE          153891
  PV UUID              fxZwEA-l8YJ-S6xA-EiNu-Z2hs-vvrY-fZ5mAf

vgdisplay:
Code:

  VG Name              fileserver
  System ID
  Format                lvm2
  Metadata Areas        3
  Metadata Sequence No  17
  VG Access            read/write
  VG Status            resizable
  MAX LV                0
  Cur LV                5
  Open LV              5
  Max PV                0
  Cur PV                3
  Act PV                3
  VG Size              2.05 TB
  PE Size              4.00 MB
  Total PE              536550
  Alloc PE / Size      511591 / 1.95 TB
  Free  PE / Size      24959 / 97.50 GB
  VG UUID              8h13tn-3yee-KlSI-kyiL-3ms2-dsjM-uAUj2t

lvdisplay:
Code:

  --- Logical volume ---
  LV Name                /dev/fileserver/lv1
  VG Name                fileserver
  LV UUID                3uYtpi-ope5-ISt9-638A-rrA7-JId0-30o59r
  LV Write Access        read/write
  LV Status              available
  # open                1
  LV Size                1.62 TB
  Current LE            424551
  Segments              3
  Allocation            inherit
  Read ahead sectors    auto
  - currently set to    256
  Block device          253:2

From initial research the PE size mattered in LVM1 but not LVM2.

jay73 07-28-2008 07:47 PM

So maybe it is the filesystem that is to blame? Run out of inodes or something like that? Consult xfs_check.

syg00 07-29-2008 12:46 AM

Quote:

Originally Posted by llin (Post 3228568)
From initial research the PE size mattered in LVM1 but not LVM2.

You think ???. If
Quote:

Total PE 178850
indicates an intrinsic limit (I don't know, I'm hypothesising) then the PE size will have a *real* big say in how much space you get to paddle around in. Especially when immediately followed by
Quote:

Free PE 0

llin 07-29-2008 01:16 AM

Quote:

Run out of inodes or something like that?
df -i shows copious amounts of inodes.

Quote:

Originally Posted by syg00 (Post 3229342)
You think ???. If
indicates an intrinsic limit (I don't know, I'm hypothesising) then the PE size will have a *real* big say in how much space you get to paddle around in.

Was referring to the pvmetadatasize option (4 MB), not the physical volumes themselves. That the first two volumes show 0 free PEs is normal as they've been filled with data (with the third volume getting close)

syg00 07-29-2008 02:04 AM

Ahhh sorry, my bad. I'd crawl back under my rock.


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