[Libguestfs] Tests and trimming vfat
Pino Toscano
ptoscano at redhat.com
Wed Sep 5 15:49:01 UTC 2018
On Wednesday, 5 September 2018 17:41:01 CEST Daniel P. Berrangé wrote:
> On Wed, Sep 05, 2018 at 04:37:05PM +0100, Richard W.M. Jones wrote:
> >
> > Here's a fun one:
> >
> > + guestfish -N test-virt-sparsify-in-place-fstrim-unsupported.img=fs:vfat exit
> > + virt-sparsify --in-place test-virt-sparsify-in-place-fstrim-unsupported.img
> > + tee test-virt-sparsify-in-place-fstrim-unsupported.log
> > [ 2.4] Trimming /dev/sda1
> > [ 7.5] Sparsify in-place operation completed with no errors
> > + grep 'warning:.*fstrim' test-virt-sparsify-in-place-fstrim-unsupported.log
> > FAIL test-virt-sparsify-in-place-fstrim-unsupported.sh (exit status: 1)
> >
> > We expect (for the purposes of the regression test) that vfat
> > filesystems cannot be trimmed. It turns out that fstrim for vfat has
> > now been implemented in Linux (commit f663b5b38fff) :-) Thanks
> > Wentao Wang (this is actually great for virt-v2v).
> >
> > So we need to find another filesystem which doesn't support fstrim.
> > Or maybe just delete this regression test.
> >
> > Thoughts?
What about filesystems such as minix or cramfs (their mkfs helpers are
part of util-linux), or nilfs2/jfs/hfsplus?
> Presumably something ancient like ext2 will not support it, and is unlikely
> to be given it given that its ancient with no active development.
Nowadays there is no more separate ext2 module in linux, and the ext4
module handles it as well.
--
Pino Toscano
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