Re: [ovirt-users] iSCSI domain on 4kn drives
--------------DE48748F7C67E1FABE46EEAF Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman <martijn.grendelman@isaac.nl <mailto:martijn.grendelman@isaac.nl>> wrote:
Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman <martijn.grendelman@isaac.nl <mailto:martijn.grendelman@isaac.nl>> wrote:
Hi,
Does oVirt support iSCSI storage domains on target LUNs using a block size of 4k?
No, we do not - not if it exposes 4K blocks. Y.
Is this on the roadmap?
Not in the short term roadmap. Of course, patches are welcome. It's mainly in VDSM. I wonder if it'll work in NFS. Y.
I don't think I ever replied to this, but I can confirm that in RHEV 3.6 it works with NFS. Best regards, Martijn. --------------DE48748F7C67E1FABE46EEAF Content-Type: text/html; charset="utf-8" Content-Transfer-Encoding: 7bit <html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body bgcolor="#FFFFFF" text="#000000"> Op 7-8-2016 om 8:19 schreef Yaniv Kaul:<br> <blockquote cite="mid:280cfbd3a16ad1b76cc7de56bda88f45,CAJgorsbJHLV1e3fH4b4AR3GBp1oi44fDhfeii+PQ1iY1RwUStw@mail.gmail.com" type="cite"> <div dir="ltr"><br> <div class="gmail_extra">On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman <span dir="ltr"><<a moz-do-not-send="true" href="mailto:martijn.grendelman@isaac.nl" target="_blank">martijn.grendelman@isaac.nl</a>></span> wrote:<br> <div class="gmail_quote"> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div bgcolor="#FFFFFF" text="#000000"> Op 4-8-2016 om 18:36 schreef Yaniv Kaul:<br> <blockquote type="cite"> <div dir="ltr"> <div class="gmail_extra"> <div class="gmail_quote"><span class="">On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman <span dir="ltr"><<a moz-do-not-send="true" href="mailto:martijn.grendelman@isaac.nl" target="_blank">martijn.grendelman@isaac.nl</a>></span> wrote:<br> </span><span class=""> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br> <br> Does oVirt support iSCSI storage domains on target LUNs using a block<br> size of 4k?<br> </blockquote> <div><br> </div> </span><span class=""> <div>No, we do not - not if it exposes 4K blocks.</div> <div>Y.</div> </span></div> </div> </div> </blockquote> <br> Is this on the roadmap?<br> </div> </blockquote> <div><br> </div> <div>Not in the short term roadmap.</div> <div>Of course, patches are welcome. It's mainly in VDSM.</div> <div>I wonder if it'll work in NFS.</div> <div>Y.</div> </div> </div> </div> </blockquote> <br> I don't think I ever replied to this, but I can confirm that in RHEV 3.6 it works with NFS.<br> <br> Best regards,<br> Martijn.<br> </body> </html> --------------DE48748F7C67E1FABE46EEAF--
Good afternoon, Exist a plan for a implementation of vdsm works with blocks in 4k? Thanks. 2016-09-05 4:15 GMT-03:00 Martijn Grendelman <martijn.grendelman@isaac.nl>:
Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Hi,
Does oVirt support iSCSI storage domains on target LUNs using a block size of 4k?
No, we do not - not if it exposes 4K blocks. Y.
Is this on the roadmap?
Not in the short term roadmap. Of course, patches are welcome. It's mainly in VDSM. I wonder if it'll work in NFS. Y.
I don't think I ever replied to this, but I can confirm that in RHEV 3.6 it works with NFS.
Best regards, Martijn.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Fri, Nov 10, 2017 at 8:43 PM Marcelo Leandro <marceloltmm@gmail.com> wrote:
Good afternoon,
Exist a plan for a implementation of vdsm works with blocks in 4k?
Not yet. If this is important to you, I suggest to open an ovirt bug and explain your use case. You can also get someone to implement this. Note that this will not be easy change, there is lost of code assuming 512 bytes block size. The change also require changes in sanlock. Vdsm and sanlock must agree on the block size used for a storage domain. Nir
Thanks.
2016-09-05 4:15 GMT-03:00 Martijn Grendelman <martijn.grendelman@isaac.nl> :
Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Hi,
Does oVirt support iSCSI storage domains on target LUNs using a block size of 4k?
No, we do not - not if it exposes 4K blocks. Y.
Is this on the roadmap?
Not in the short term roadmap. Of course, patches are welcome. It's mainly in VDSM. I wonder if it'll work in NFS. Y.
I don't think I ever replied to this, but I can confirm that in RHEV 3.6 it works with NFS.
Best regards, Martijn.
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
_______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Mon, Sep 5, 2016 at 10:16 AM Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Op 7-8-2016 om 8:19 schreef Yaniv Kaul:
On Fri, Aug 5, 2016 at 4:42 PM, Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Op 4-8-2016 om 18:36 schreef Yaniv Kaul:
On Thu, Aug 4, 2016 at 11:49 AM, Martijn Grendelman < martijn.grendelman@isaac.nl> wrote:
Hi,
Does oVirt support iSCSI storage domains on target LUNs using a block size of 4k?
No, we do not - not if it exposes 4K blocks. Y.
Is this on the roadmap?
Not in the short term roadmap. Of course, patches are welcome. It's mainly in VDSM. I wonder if it'll work in NFS. Y.
I don't think I ever replied to this, but I can confirm that in RHEV 3.6 it works with NFS.
David, do you know if 4k disks over NFS works for sanlock?
Best regards, Martijn. _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
On Sat, Nov 11, 2017 at 12:24:25AM +0000, Nir Soffer wrote:
David, do you know if 4k disks over NFS works for sanlock?
When using files, sanlock always does 512 byte i/o. This can be a problem when there are 4k disks used under NFS. On disks, sanlock detects the sector size (with libblkid) and uses 512/4k accordingly. If vdsm knows when to use 4k i/o over files, I can add a sanlock flag that vdsm can use to create 4k sanlock leases. Dave
participants (4)
-
David Teigland -
Marcelo Leandro -
Martijn Grendelman -
Nir Soffer