2:04 a.m.
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Hi,
is there a way to "shrink" a thin disk image to reclaim deleted space like
using virt-sparsify?
Or can it be done by making a snapshot and clone the VM to a new one?
Thanks a lot
Christian
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class=3DMsoNormal><span
lang=3DEN-US>Hi,<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US>is there a way to =
„shrink“ a thin disk image to reclaim deleted space like =
using virt-sparsify?<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US>Or can it be done by making a snapshot and clone the VM to =
a new one?<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US>Thanks a lot<o:p></o:p></span></p><p =
class=3DMsoNormal><span =
lang=3DEN-US>Christian<o:p></o:p></span></p></div></body></html>
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3:29 p.m.
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
is there a way to „shrink“ a thin disk image to reclaim deleted space like
using virt-sparsify?
Yes, if the underlying file system supports it (NFS, for example, might
need to be 4.2 and above).
Or can it be done by making a snapshot and clone the VM to a new
one?
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run
'fstrim' from within the guest.
Y.
Thanks a lot
Christian
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
5:05 a.m.
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Hi,
seems not to work with FC Storage,
=20
I Zero filled the Disk with dd, removed the file and did a fstrim which =
told me it trimmed the right amount of space,
But the disk Image stays full size.
=20
Thx=20
Christian
=20
Von: Yaniv Kaul [mailto:ykaul@redhat.com]=20
Gesendet: Mittwoch, 30. M=C3=A4rz 2016 22:29
An: Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
Cc: users(a)ovirt.org
Betreff: Re: [ovirt-users] Reclaim disk space of thin disks
=20
=20
=20
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian =
<Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> > wrote:
Hi,
is there a way to =E2=80=9Eshrink=E2=80=9C a thin disk image to reclaim =
deleted space like using virt-sparsify?
=20
Yes, if the underlying file system supports it (NFS, for example, might =
need to be 4.2 and above).
=20
Or can it be done by making a snapshot and clone the VM to a new one?
=20
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run =
'fstrim' from within the guest.=20
Y.
=20
=20
Thanks a lot
Christian
_______________________________________________
Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>=20
http://lists.ovirt.org/mailman/listinfo/users
=20
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link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Hi,<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>seems not to work with FC
Storage,<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>I Zero filled the Disk with dd, removed the file and did a =
fstrim which told me it trimmed the right amount of =
space,<o:p></o:p></span></p><p class=3DMsoNormal><span
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>But the disk Image stays full =
size.<o:p></o:p></span></p><p class=3DMsoNormal><span
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Thx <o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Christian<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><b><span =
lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Von:</span></=
b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Yaniv
Kaul =
[mailto:ykaul@redhat.com] <br><b>Gesendet:</b> Mittwoch, 30. M=C3=A4rz
=
2016 22:29<br><b>An:</b> Grundmann, Christian =
<Christian.Grundmann@fabasoft.com><br><b>Cc:</b> =
users@ovirt.org<br><b>Betreff:</b> Re: [ovirt-users] Reclaim disk space
=
of thin disks<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p
class=3DMsoNormal>On Wed, =
Mar 30, 2016 at 10:04 AM, Grundmann, Christian <<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann(a)fabasoft.com</a>&gt; =
wrote:<o:p></o:p></p><blockquote
style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Hi,</span><o:p></o:p></p><p class=3DMsoNormal
=
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>is there a way to =E2=80=9Eshrink=E2=80=9C a thin disk =
image to reclaim deleted space like using =
virt-sparsify?</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal><o:p> </o:p></p></div><div><p
=
class=3DMsoNormal>Yes, if the underlying file system supports it (NFS, =
for example, might need to be 4.2 and =
above).<o:p></o:p></p></div><div><p =
class=3DMsoNormal> <o:p></o:p></p></div><blockquote
=
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Or can it be done by making a snapshot and clone the VM to =
a new
one?</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal><o:p> </o:p></p></div><div><p
=
class=3DMsoNormal>Another suggestion: use the VDSM hooks for discard =
('diskunmap') and run 'fstrim' from within the =
guest. <o:p></o:p></p></div><div><p =
class=3DMsoNormal>Y.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><blockquote
=
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US> </span><o:p></o:p></p><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Thanks a lot</span><o:p></o:p></p><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US style=3D'color:#888888'>Christian</span><span =
style=3D'color:#888888'><o:p></o:p></span></p></div></div><p
=
class=3DMsoNormal =
style=3D'margin-bottom:12.0pt'><br>______________________________________=
_________<br>Users mailing list<br><a =
href=3D"mailto:Users@ovirt.org">Users@ovirt.org</a><br><a =
href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/us...
/o:p></p></blockquote></div><p =
class=3DMsoNormal><o:p> </o:p></p></div></div></div></body></html>
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------=_NextPart_000_0009_01D18B45.90D7C880--
5:13 a.m.
On Thu, Mar 31, 2016 at 1:05 PM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
seems not to work with FC Storage,
I Zero filled the Disk with dd, removed the file and did a fstrim which
told me it trimmed the right amount of space,
But the disk Image stays full size.
1. Did you use the hook?
2. Where did you see it's the same size? Should be looked at from the
storage side (assuming, btw, it supports discard!)
Y.
Thx
Christian
*Von:* Yaniv Kaul [mailto:ykaul@redhat.com]
*Gesendet:* Mittwoch, 30. März 2016 22:29
*An:* Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
*Cc:* users(a)ovirt.org
*Betreff:* Re: [ovirt-users] Reclaim disk space of thin disks
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
is there a way to „shrink“ a thin disk image to reclaim deleted space like
using virt-sparsify?
Yes, if the underlying file system supports it (NFS, for example, might
need to be 4.2 and above).
Or can it be done by making a snapshot and clone the VM to a new one?
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run
'fstrim' from within the guest.
Y.
Thanks a lot
Christian
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
5:16 a.m.
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boundary="----=_NextPart_001_0017_01D18B47.2A0514D0"
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Hi,
@1. Did you use the hook?
yes, without the hook fstrim would not start,
@2. Where did you see it's the same size? Should be looked at from the =
storage side (assuming, btw, it supports discard!)
I looked at the =E2=80=9Cactual Size=E2=80=9D under Storage
=20
I don=E2=80=99t know how ovirt handles FC storage and if this will allow =
discard.
=20
Thx=20
Christian
=20
=20
Von: Yaniv Kaul [mailto:ykaul@redhat.com]=20
Gesendet: Donnerstag, 31. M=C3=A4rz 2016 12:13
An: Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
Cc: users(a)ovirt.org
Betreff: Re: [ovirt-users] Reclaim disk space of thin disks
=20
=20
=20
On Thu, Mar 31, 2016 at 1:05 PM, Grundmann, Christian =
<Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> > wrote:
Hi,
seems not to work with FC Storage,
=20
I Zero filled the Disk with dd, removed the file and did a fstrim which =
told me it trimmed the right amount of space,
But the disk Image stays full size.
=20
1. Did you use the hook?
2. Where did you see it's the same size? Should be looked at from the =
storage side (assuming, btw, it supports discard!)
Y.
=20
=20
Thx=20
Christian
=20
Von: Yaniv Kaul [mailto:ykaul@redhat.com <mailto:ykaul@redhat.com> ]=20
Gesendet: Mittwoch, 30. M=C3=A4rz 2016 22:29
An: Grundmann, Christian <Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> >
Cc: users(a)ovirt.org <mailto:users@ovirt.org>=20
Betreff: Re: [ovirt-users] Reclaim disk space of thin disks
=20
=20
=20
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian =
<Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> > wrote:
Hi,
is there a way to =E2=80=9Eshrink=E2=80=9C a thin disk image to reclaim =
deleted space like using virt-sparsify?
=20
Yes, if the underlying file system supports it (NFS, for example, might =
need to be 4.2 and above).
=20
Or can it be done by making a snapshot and clone the VM to a new one?
=20
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run =
'fstrim' from within the guest.=20
Y.
=20
=20
Thanks a lot
Christian
_______________________________________________
Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>=20
http://lists.ovirt.org/mailman/listinfo/users
=20
=20
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</o:shapelayout></xml><![endif]--></head><body lang=3DDE-AT
link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Hi,<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>@1. Did you use the
hook?<o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>yes, without the hook fstrim would not =
start,<o:p></o:p></span></p><p class=3DMsoNormal><span
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>@2. Where did you see it's the same size? Should be looked =
at from the storage side (assuming, btw, it supports =
discard!)<o:p></o:p></span></p><p class=3DMsoNormal><span
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>I looked at the =E2=80=9Cactual Size=E2=80=9D under =
Storage<o:p></o:p></span></p><p class=3DMsoNormal><span
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>I don=E2=80=99t know how ovirt handles FC storage and if =
this will allow discard.<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Thx <o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Christian<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><p
=
class=3DMsoNormal><b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Von:</span></=
b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Yaniv
Kaul =
[mailto:ykaul@redhat.com] <br><b>Gesendet:</b> Donnerstag, 31. M=C3=A4rz
=
2016 12:13<br><b>An:</b> Grundmann, Christian =
<Christian.Grundmann@fabasoft.com><br><b>Cc:</b> =
users@ovirt.org<br><b>Betreff:</b> Re: [ovirt-users] Reclaim disk space
=
of thin disks<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p =
class=3DMsoNormal><o:p> </o:p></p><div><p
class=3DMsoNormal>On Thu, =
Mar 31, 2016 at 1:05 PM, Grundmann, Christian <<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann(a)fabasoft.com</a>&gt; =
wrote:<o:p></o:p></p><blockquote
style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Hi,</span><o:=
p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>seems not
to =
work with FC Storage,</span><o:p></o:p></p><p class=3DMsoNormal
=
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>I Zero =
filled the Disk with dd, removed the file and did a fstrim which told me =
it trimmed the right amount of space,</span><o:p></o:p></p><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>But the
disk =
Image stays full =
size.</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal><o:p> </o:p></p></div><div><p
=
class=3DMsoNormal>1. Did you use the
hook?<o:p></o:p></p></div><div><p =
class=3DMsoNormal>2. Where did you see it's the same size? Should be =
looked at from the storage side (assuming, btw, it supports =
discard!)<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Y.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><blockquote
=
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Thx =
</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Christian</sp=
an><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
=
lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Von:</span></=
b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Yaniv
Kaul =
[mailto:<a href=3D"mailto:ykaul@redhat.com" =
target=3D"_blank">ykaul(a)redhat.com</a>]
<br><b>Gesendet:</b> Mittwoch, =
30. M=C3=A4rz 2016 22:29<br><b>An:</b> Grundmann, Christian
<<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann@fabasoft.com</a>><br><b>Cc:</b>
=
<a href=3D"mailto:users@ovirt.org" =
target=3D"_blank">users@ovirt.org</a><br><b>Betreff:</b>
Re: =
[ovirt-users] Reclaim disk space of thin =
disks</span><o:p></o:p></p><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Wed, Mar =
30, 2016 at 10:04 AM, Grundmann, Christian <<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann(a)fabasoft.com</a>&gt; =
wrote:<o:p></o:p></p><blockquote
style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Hi,</span><o:p></o:p></p><p class=3DMsoNormal
=
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>is there a way to =E2=80=9Eshrink=E2=80=9C a thin disk =
image to reclaim deleted space like using =
virt-sparsify?</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p
</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Yes, if the
=
underlying file system supports it (NFS, for example, might need to be =
4.2 and above).<o:p></o:p</p></div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Or can it be done by making a snapshot and clone the VM to =
a new
one?</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Another =
suggestion: use the VDSM hooks for discard ('diskunmap') and run =
'fstrim' from within the
guest. <o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Y.<o:p></o:p=
</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US> </span><o:p></o:p></p><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Thanks a lot</span><o:p></o:p></p><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'color:#888888'>Christian</span><o:p></o:p></p></div></div><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;margin-bottom:12.0pt'><br>______________=
_________________________________<br>Users mailing list<br><a =
href=3D"mailto:Users@ovirt.org" =
target=3D"_blank">Users(a)ovirt.org</a><br><a =
href=3D"http://lists.ovirt.org/mailman/listinfo/users" =
target=3D"_blank">http://lists.ovirt.org/mailman/listinfo/us...
/o:p></p></blockquote></div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div></div></div></div></div></div></blockquote></div><p
=
class=3DMsoNormal><o:p> </o:p></p></div></div></div></body></html>
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------=_NextPart_000_0016_01D18B47.2A0514D0--
7:33 a.m.
On Thu, Mar 31, 2016 at 1:16 PM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
@1. Did you use the hook?
yes, without the hook fstrim would not start,
@2. Where did you see it's the same size? Should be looked at from the
storage side (assuming, btw, it supports discard!)
I looked at the “actual Size” under Storage
I'm unsure if that size should change - we've allocated blocks, they are
still allocated from our perspective. From the storage point of view,
there's a hole that can be used for other purposes.
I'd look on the storage side.
I don’t know how ovirt handles FC storage and if this will allow discard.
It doesn't really care - thee discard should be passed to the underlying
storage. Most should support UNMAP these days. But you can easily check, I
assume with a small test (use sg3_utils for example).
Y.
Thx
Christian
*Von:* Yaniv Kaul [mailto:ykaul@redhat.com]
*Gesendet:* Donnerstag, 31. März 2016 12:13
*An:* Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
*Cc:* users(a)ovirt.org
*Betreff:* Re: [ovirt-users] Reclaim disk space of thin disks
On Thu, Mar 31, 2016 at 1:05 PM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
seems not to work with FC Storage,
I Zero filled the Disk with dd, removed the file and did a fstrim which
told me it trimmed the right amount of space,
But the disk Image stays full size.
1. Did you use the hook?
2. Where did you see it's the same size? Should be looked at from the
storage side (assuming, btw, it supports discard!)
Y.
Thx
Christian
*Von:* Yaniv Kaul [mailto:ykaul@redhat.com]
*Gesendet:* Mittwoch, 30. März 2016 22:29
*An:* Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
*Cc:* users(a)ovirt.org
*Betreff:* Re: [ovirt-users] Reclaim disk space of thin disks
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
is there a way to „shrink“ a thin disk image to reclaim deleted space like
using virt-sparsify?
Yes, if the underlying file system supports it (NFS, for example, might
need to be 4.2 and above).
Or can it be done by making a snapshot and clone the VM to a new one?
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run
'fstrim' from within the guest.
Y.
Thanks a lot
Christian
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
7:44 a.m.
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boundary="----=_NextPart_001_0026_01D18B5B.E2F532E0"
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charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Hi,
@ I'm unsure if that size should change - we've allocated blocks, they =
are still allocated from our perspective. From the storage point of =
view, there's a hole that can be used for other purposes.
I'd look on the storage side.=20
=20
That=E2=80=99s the problem, if the space is still allocated it =
can=E2=80=99t be used for other VMs so it won=E2=80=99t help. Is there a =
possibility to deallocate the free Blocks of the Disk? I think =
virt-sparsify would do exactly that but can=E2=80=99t be used with =
ovirt?
=20
Thx
Christian
=20
=20
=20
=20
=20
Von: Yaniv Kaul [mailto:ykaul@redhat.com]=20
Gesendet: Donnerstag, 31. M=C3=A4rz 2016 14:33
An: Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
Cc: users(a)ovirt.org
Betreff: Re: [ovirt-users] Reclaim disk space of thin disks
=20
On Thu, Mar 31, 2016 at 1:16 PM, Grundmann, Christian =
<Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> > wrote:
Hi,
@1. Did you use the hook?
yes, without the hook fstrim would not start,
@2. Where did you see it's the same size? Should be looked at from the =
storage side (assuming, btw, it supports discard!)
I looked at the =E2=80=9Cactual Size=E2=80=9D under Storage
=20
I'm unsure if that size should change - we've allocated blocks, they are =
still allocated from our perspective. From the storage point of view, =
there's a hole that can be used for other purposes.
I'd look on the storage side.=20
=20
I don=E2=80=99t know how ovirt handles FC storage and if this will allow =
discard.
=20
It doesn't really care - thee discard should be passed to the underlying =
storage. Most should support UNMAP these days. But you can easily check, =
I assume with a small test (use sg3_utils for example).
Y.
=20
=20
Thx=20
Christian
=20
=20
Von: Yaniv Kaul [mailto:ykaul@redhat.com <mailto:ykaul@redhat.com> ]=20
Gesendet: Donnerstag, 31. M=C3=A4rz 2016 12:13
An: Grundmann, Christian <Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> >
Cc: users(a)ovirt.org <mailto:users@ovirt.org>=20
Betreff: Re: [ovirt-users] Reclaim disk space of thin disks
=20
=20
=20
On Thu, Mar 31, 2016 at 1:05 PM, Grundmann, Christian =
<Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> > wrote:
Hi,
seems not to work with FC Storage,
=20
I Zero filled the Disk with dd, removed the file and did a fstrim which =
told me it trimmed the right amount of space,
But the disk Image stays full size.
=20
1. Did you use the hook?
2. Where did you see it's the same size? Should be looked at from the =
storage side (assuming, btw, it supports discard!)
Y.
=20
=20
Thx=20
Christian
=20
Von: Yaniv Kaul [mailto:ykaul@redhat.com <mailto:ykaul@redhat.com> ]=20
Gesendet: Mittwoch, 30. M=C3=A4rz 2016 22:29
An: Grundmann, Christian <Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> >
Cc: users(a)ovirt.org <mailto:users@ovirt.org>=20
Betreff: Re: [ovirt-users] Reclaim disk space of thin disks
=20
=20
=20
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian =
<Christian.Grundmann(a)fabasoft.com =
<mailto:Christian.Grundmann@fabasoft.com> > wrote:
Hi,
is there a way to =E2=80=9Eshrink=E2=80=9C a thin disk image to reclaim =
deleted space like using virt-sparsify?
=20
Yes, if the underlying file system supports it (NFS, for example, might =
need to be 4.2 and above).
=20
Or can it be done by making a snapshot and clone the VM to a new one?
=20
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run =
'fstrim' from within the guest.=20
Y.
=20
=20
Thanks a lot
Christian
_______________________________________________
Users mailing list
Users(a)ovirt.org <mailto:Users@ovirt.org>=20
http://lists.ovirt.org/mailman/listinfo/users
=20
=20
=20
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</o:shapelayout></xml><![endif]--></head><body lang=3DDE-AT
link=3Dblue =
vlink=3Dpurple><div class=3DWordSection1><p class=3DMsoNormal><span =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Hi,<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>@</span><span lang=3DEN-US> I'm unsure if that size
should =
change - we've allocated blocks, they are still allocated from our =
perspective. From the storage point of view, there's a hole that can be =
used for other purposes.<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US>I'd look on the storage
side. <o:p></o:p></span></p><p =
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>That=E2=80=99s the problem, if the space is still =
allocated it can=E2=80=99t be used for other VMs so it won=E2=80=99t =
help. Is there a possibility to deallocate the free Blocks of the Disk? =
I think virt-sparsify would do exactly that but can=E2=80=99t be used =
with ovirt?<o:p></o:p></span></p><p
class=3DMsoNormal><span lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Thx<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'>Christian<o:p></o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif;mso-fareast-la=
nguage:EN-US'><o:p> </o:p></span></p><p
class=3DMsoNormal><span =
lang=3DEN-US =
style=3D'mso-fareast-language:EN-US'><o:p> </o:p></span></p><p
=
class=3DMsoNormal><b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Von:</span></=
b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Yaniv
Kaul =
[mailto:ykaul@redhat.com] <br><b>Gesendet:</b> Donnerstag, 31. M=C3=A4rz
=
2016 14:33<br><b>An:</b> Grundmann, Christian =
<Christian.Grundmann@fabasoft.com><br><b>Cc:</b> =
users@ovirt.org<br><b>Betreff:</b> Re: [ovirt-users] Reclaim disk space
=
of thin disks<o:p></o:p></span></p><p =
class=3DMsoNormal><o:p> </o:p></p><div><div><div><p
=
class=3DMsoNormal>On Thu, Mar 31, 2016 at 1:16 PM, Grundmann, Christian =
<<a href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann(a)fabasoft.com</a>&gt; =
wrote:<o:p></o:p></p><blockquote
style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Hi,</span><o:=
p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>@1. Did
you =
use the hook?</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>yes,
without =
the hook fstrim would not start,</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>@2. Where
=
did you see it's the same size? Should be looked at from the storage =
side (assuming, btw, it supports
discard!)</span><o:p></o:p></p><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>I looked
at =
the =E2=80=9Cactual Size=E2=80=9D under =
Storage</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal><o:p> </o:p></p></div><div><p
=
class=3DMsoNormal>I'm unsure if that size should change - we've =
allocated blocks, they are still allocated from our perspective. From =
the storage point of view, there's a hole that can be used for other =
purposes.<o:p></o:p></p></div><div><p
class=3DMsoNormal>I'd look on the =
storage side. <o:p></o:p></p></div><blockquote =
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>I =
don=E2=80=99t know how ovirt handles FC storage and if this will allow =
discard.</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal><o:p> </o:p></p></div><div><p
=
class=3DMsoNormal>It doesn't really care - thee discard should be passed =
to the underlying storage. Most should support UNMAP these days. But you =
can easily check, I assume with a small test (use sg3_utils for =
example).<o:p></o:p></p></div><div><p =
class=3DMsoNormal>Y.<o:p></o:p></p></div><div><p =
class=3DMsoNormal><o:p> </o:p></p></div><blockquote
=
style=3D'border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Thx =
</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Christian</sp=
an><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US> </span><o:p></o:p></p><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
=
lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Von:</span></=
b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Yaniv
Kaul =
[mailto:<a href=3D"mailto:ykaul@redhat.com" =
target=3D"_blank">ykaul(a)redhat.com</a>]
<br><b>Gesendet:</b> Donnerstag, =
31. M=C3=A4rz 2016
12:13</span><o:p></o:p></p><div><div><p =
class=3DMsoNormal><br><b>An:</b> Grundmann, Christian <<a
=
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann@fabasoft.com</a>><br><b>Cc:</b>
=
<a href=3D"mailto:users@ovirt.org" =
target=3D"_blank">users@ovirt.org</a><br><b>Betreff:</b>
Re: =
[ovirt-users] Reclaim disk space of thin =
disks<o:p></o:p></p></div></div><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Thu, Mar =
31, 2016 at 1:05 PM, Grundmann, Christian <<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann(a)fabasoft.com</a>&gt; =
wrote:<o:p></o:p></p><blockquote
style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Hi,</span><o:=
p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>seems not
to =
work with FC Storage,</span><o:p></o:p></p><p class=3DMsoNormal
=
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>I Zero =
filled the Disk with dd, removed the file and did a fstrim which told me =
it trimmed the right amount of space,</span><o:p></o:p></p><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>But the
disk =
Image stays full =
size.</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p
</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>1. Did you
=
use the hook?<o:p></o:p</p></div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>2. Where =
did you see it's the same size? Should be looked at from the storage =
side (assuming, btw, it supports
discard!)<o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Y.<o:p></o:p=
</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Thx =
</span><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Christian</sp=
an><o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> </span>=
<o:p></o:p></p><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span
=
lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'>Von:</span></=
b><span lang=3DDE =
style=3D'font-size:11.0pt;font-family:"Calibri",sans-serif'> Yaniv
Kaul =
[mailto:<a href=3D"mailto:ykaul@redhat.com" =
target=3D"_blank">ykaul(a)redhat.com</a>]
<br><b>Gesendet:</b> Mittwoch, =
30. M=C3=A4rz 2016 22:29<br><b>An:</b> Grundmann, Christian
<<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann@fabasoft.com</a>><br><b>Cc:</b>
=
<a href=3D"mailto:users@ovirt.org" =
target=3D"_blank">users@ovirt.org</a><br><b>Betreff:</b>
Re: =
[ovirt-users] Reclaim disk space of thin =
disks</span><o:p></o:p></p><div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>On Wed, Mar =
30, 2016 at 10:04 AM, Grundmann, Christian <<a =
href=3D"mailto:Christian.Grundmann@fabasoft.com" =
target=3D"_blank">Christian.Grundmann(a)fabasoft.com</a>&gt; =
wrote:<o:p></o:p></p><blockquote
style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Hi,</span><o:p></o:p></p><p class=3DMsoNormal
=
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>is there a way to =E2=80=9Eshrink=E2=80=9C a thin disk =
image to reclaim deleted space like using =
virt-sparsify?</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Yes, if the
=
underlying file system supports it (NFS, for example, might need to be =
4.2 and above).<o:p></o:p</p></div><div><p
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US>Or can it be done by making a snapshot and clone the VM to =
a new
one?</span><o:p></o:p></p></div></div></blockquote><div><p
=
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Another =
suggestion: use the VDSM hooks for discard ('diskunmap') and run =
'fstrim' from within the
guest. <o:p></o:p></p></div><div><p =
class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Y.<o:p></o:p=
</p></div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> <o:p><=
/o:p></p></div><blockquote style=3D'border:none;border-left:solid =
#CCCCCC 1.0pt;padding:0cm 0cm 0cm =
6.0pt;margin-left:4.8pt;margin-top:5.0pt;margin-right:0cm;margin-bottom:5=
.0pt'><div><div><p class=3DMsoNormal =
style=3D'mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span =
lang=3DEN-US> </span><o:p></o:p></p><p
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lang=3DEN-US>Thanks a lot</span><o:p></o:p></p><p
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lang=3DEN-US =
style=3D'color:#888888'>Christian</span><o:p></o:p></p></div></div><p
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8:58 a.m.
On Thu, Mar 31, 2016 at 3:44 PM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
@ I'm unsure if that size should change - we've allocated blocks, they
are still allocated from our perspective. From the storage point of view,
there's a hole that can be used for other purposes.
I'd look on the storage side.
That’s the problem, if the space is still allocated it can’t be used for
other VMs so it won’t help. Is there a possibility to deallocate the free
Blocks of the Disk? I think virt-sparsify would do exactly that but can’t
be used with ovirt?
Well, it's tricky ;-) - the space is allocated, in the sense that the
storage 'promised' to give you X GBs of storage. It just didn't say where
does blocks are going to be. So once you unmap a block, it may take it and
give it to someone else. This is what thin provisioning is all about. You
get logical blocks which map to physical blocks. Once those physical blocks
have been deallocated, they may be used by something else, yet the logical
block is still yours - and if you'll write to it, you'll get a different
physical block.
Y.
Thx
Christian
*Von:* Yaniv Kaul [mailto:ykaul@redhat.com]
*Gesendet:* Donnerstag, 31. März 2016 14:33
*An:* Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
*Cc:* users(a)ovirt.org
*Betreff:* Re: [ovirt-users] Reclaim disk space of thin disks
On Thu, Mar 31, 2016 at 1:16 PM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
@1. Did you use the hook?
yes, without the hook fstrim would not start,
@2. Where did you see it's the same size? Should be looked at from the
storage side (assuming, btw, it supports discard!)
I looked at the “actual Size” under Storage
I'm unsure if that size should change - we've allocated blocks, they are
still allocated from our perspective. From the storage point of view,
there's a hole that can be used for other purposes.
I'd look on the storage side.
I don’t know how ovirt handles FC storage and if this will allow discard.
It doesn't really care - thee discard should be passed to the underlying
storage. Most should support UNMAP these days. But you can easily check, I
assume with a small test (use sg3_utils for example).
Y.
Thx
Christian
*Von:* Yaniv Kaul [mailto:ykaul@redhat.com]
*Gesendet:* Donnerstag, 31. März 2016 12:13
*An:* Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
*Cc:* users(a)ovirt.org
*Betreff:* Re: [ovirt-users] Reclaim disk space of thin disks
On Thu, Mar 31, 2016 at 1:05 PM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
seems not to work with FC Storage,
I Zero filled the Disk with dd, removed the file and did a fstrim which
told me it trimmed the right amount of space,
But the disk Image stays full size.
1. Did you use the hook?
2. Where did you see it's the same size? Should be looked at from the
storage side (assuming, btw, it supports discard!)
Y.
Thx
Christian
*Von:* Yaniv Kaul [mailto:ykaul@redhat.com]
*Gesendet:* Mittwoch, 30. März 2016 22:29
*An:* Grundmann, Christian <Christian.Grundmann(a)fabasoft.com>
*Cc:* users(a)ovirt.org
*Betreff:* Re: [ovirt-users] Reclaim disk space of thin disks
On Wed, Mar 30, 2016 at 10:04 AM, Grundmann, Christian <
Christian.Grundmann(a)fabasoft.com> wrote:
Hi,
is there a way to „shrink“ a thin disk image to reclaim deleted space like
using virt-sparsify?
Yes, if the underlying file system supports it (NFS, for example, might
need to be 4.2 and above).
Or can it be done by making a snapshot and clone the VM to a new one?
Another suggestion: use the VDSM hooks for discard ('diskunmap') and run
'fstrim' from within the guest.
Y.
Thanks a lot
Christian
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