[linux-lvm] "write failed.. No space left", "Failed to write VG", and "Failed to write a MDA"

[Inbox]

Kernel 4.16.8, lvm 2.02.177.

On Sun, Jun 3, 2018 at 1:13 PM, Inbox <jimhaddad46 at gmail.com> wrote:

> I'm aware I can't let my thin volume get full.  I'm actually about to
> delete a lot of things.
>
>
>
> I don't understand why it gave the sdh3 then sdh3, sdg3, sdf3 no space
> left on device errors.  sdf3 has 366G left in its thin pool, and I asked to
> create a virtual 200G within it.
>
> I don't understand why it failed to write VG, or an MDA of VG.
>
> I'm most concerned if anything's corrupted now, or if I can ignore this
> other than that I couldn't create a volume.
>
> disk1thin is on sdh3
> disk2thin is on sdg3
> disk3thin is on sdf3
> disk4thin is on sde3
>
> # lvs
> ...
>   disk1thin                       lvm    twi-aot---  <4.53t
>      84.13  76.33
>   disk2thin                       lvm    twi-aot---  <4.53t
>      85.98  78.09
>   disk3thin                       lvm    twi-aot---  <4.53t
>      92.10  83.47
>   disk4thin                       lvm    twi-aot---   4.53t
>      80.99  36.91
> ...
> # lvcreate -V200G lvm/disk3thin -n test3
>   WARNING: Sum of all thin volume sizes (21.22 TiB) exceeds the size of
> thin pools and the size of whole volume group (<18.17 TiB).
>   WARNING: You have not turned on protection against thin pools running
> out of space.
>   WARNING: Set activation/thin_pool_autoextend_threshold below 100 to
> trigger automatic extension of thin pools before they get full.
>   /dev/sdh3: write failed after 24064 of 24576 at 4993488961536: No space
> left on device
>   Failed to write VG lvm.
>   Failed to write VG lvm.
>   Manual intervention may be required to remove abandoned LV(s) before
> retrying.
> # lvremove lvm/test3
>   /dev/sdh3: write failed after 24064 of 24576 at 4993488961536: No space
> left on device
>   WARNING: Failed to write an MDA of VG lvm.
>   /dev/sdg3: write failed after 24064 of 24576 at 4993488961536: No space
> left on device
>   WARNING: Failed to write an MDA of VG lvm.
>   /dev/sdf3: write failed after 24064 of 24576 at 4993488961536: No space
> left on device
>   WARNING: Failed to write an MDA of VG lvm.
>   Logical volume "test3" successfully removed
> # lvs --- shows test3 is gone
>
> # pvs
>   PV             VG     Fmt  Attr PSize    PFree
>   /dev/sde3      lvm    lvm2 a--     4.54t <10.70g
>   /dev/sdf3      lvm    lvm2 a--     4.54t      0
>   /dev/sdg3      lvm    lvm2 a--     4.54t      0
>   /dev/sdh3      lvm    lvm2 a--     4.54t      0
> # vgs
>   VG     #PV #LV #SN Attr   VSize   VFree
>   lvm      4  51   0 wz--n- <18.17t <10.70g
>
>
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