From wcooley at textwise.com Thu May 4 23:10:34 2017 Content-Type: multipart/mixed; boundary="===============6436744831457341873==" MIME-Version: 1.0 From: William Cooley To: users at ovirt.org Subject: [ovirt-users] iSCSI LUN recommended sector size Date: Thu, 04 May 2017 21:38:00 +0000 Message-ID: --===============6436744831457341873== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable --_000_BLUPR0801MB659DFB1D72979A76DF0D1CCC4EA0BLUPR0801MB659na_ Content-Type: text/plain; charset=3D"us-ascii" Content-Transfer-Encoding: quoted-printable I'm setting up a new iSCSI LUN / volume and am wondering what the recommend= =3D ed sector size is. The setup wizard recommends 8KB for vmware. I've read that QCOW2 uses 64KB blocks? Does this mean I use 64KB on the isc= =3D si LUN? Sorry if this is a stupid question. Regards, William --_000_BLUPR0801MB659DFB1D72979A76DF0D1CCC4EA0BLUPR0801MB659na_ Content-Type: text/html; charset=3D"us-ascii" Content-Transfer-Encoding: quoted-printable

I&#= 8217=3D ;m setting up a new iSCSI LUN / volume and am wondering what the recommende= =3D d sector size is.

&n=3D bsp;

The= set=3D up wizard recommends 8KB for vmware.

&n=3D bsp;

I&#= 8217=3D ;ve read that QCOW2 uses 64KB blocks? Does this mean I use 64KB= =3D on the iscsi LUN? Sorry if this is a stupid question.

 

Regards,

William

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The setup wizard recommends 8KB for vmware. I=E2=80=99ve read that QCOW2 uses 64KB blocks? Does this mean I use 64KB on= the iscsi LUN? Sorry if this is a stupid question. Yes, qcow2 uses 64K, but I'm unsure if that's optimal in any way to the underlying disks. I doubt it makes a noticeable difference. Y. Regards, William _______________________________________________ Users mailing list Users(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/users --===============4848034564774608386== Content-Type: text/html MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="attachment.html" PGRpdiBkaXI9ImF1dG8iPjxkaXY+PGJyPjxkaXYgY2xhc3M9ImdtYWlsX2V4dHJhIj48YnI+PGRp diBjbGFzcz0iZ21haWxfcXVvdGUiPk9uIE1heSA1LCAyMDE3IDE6MTEgQU0sICZxdW90O1dpbGxp YW0gQ29vbGV5JnF1b3Q7ICZsdDs8YSBocmVmPSJtYWlsdG86d2Nvb2xleUB0ZXh0d2lzZS5jb20i Pndjb29sZXlAdGV4dHdpc2UuY29tPC9hPiZndDsgd3JvdGU6PGJyIHR5cGU9ImF0dHJpYnV0aW9u Ij48YmxvY2txdW90ZSBjbGFzcz0icXVvdGUiIHN0eWxlPSJtYXJnaW46MCAwIDAgLjhleDtib3Jk ZXItbGVmdDoxcHggI2NjYyBzb2xpZDtwYWRkaW5nLWxlZnQ6MWV4Ij4KCgoKCgo8ZGl2IGxhbmc9 IkVOLVVTIiBsaW5rPSIjMDU2M0MxIiB2bGluaz0iIzk1NEY3MiI+CjxkaXYgY2xhc3M9Im1fMjE2 NzIxNjAwODg5NDUxOTk2NVdvcmRTZWN0aW9uMSI+CjxwIGNsYXNzPSJNc29Ob3JtYWwiPjxzcGFu IHN0eWxlPSJmb250LXNpemU6MTIuMHB0O2NvbG9yOmJsYWNrIj5J4oCZbSBzZXR0aW5nIHVwIGEg bmV3IGlTQ1NJIExVTiAvIHZvbHVtZSBhbmQgYW0gd29uZGVyaW5nIHdoYXQgdGhlIHJlY29tbWVu ZGVkIHNlY3RvciBzaXplIGlzLjx1PjwvdT48dT48L3U+PC9zcGFuPjwvcD4KPHAgY2xhc3M9Ik1z b05vcm1hbCI+PHNwYW4gc3R5bGU9ImZvbnQtc2l6ZToxMi4wcHQ7Y29sb3I6YmxhY2siPjx1Pjwv dT7CoDx1PjwvdT48L3NwYW4+PC9wPgo8cCBjbGFzcz0iTXNvTm9ybWFsIj48c3BhbiBzdHlsZT0i Zm9udC1zaXplOjEyLjBwdDtjb2xvcjpibGFjayI+VGhlIHNldHVwIHdpemFyZCByZWNvbW1lbmRz IDhLQiBmb3Igdm13YXJlLjx1PjwvdT48dT48L3U+PC9zcGFuPjwvcD4KPHAgY2xhc3M9Ik1zb05v cm1hbCI+PHNwYW4gc3R5bGU9ImZvbnQtc2l6ZToxMi4wcHQ7Y29sb3I6YmxhY2siPjx1PjwvdT7C oDx1PjwvdT48L3NwYW4+PC9wPgo8cCBjbGFzcz0iTXNvTm9ybWFsIj48c3BhbiBzdHlsZT0iZm9u dC1zaXplOjEyLjBwdDtjb2xvcjpibGFjayI+SeKAmXZlIHJlYWQgdGhhdCBRQ09XMiB1c2VzCjwv c3Bhbj48c3BhbiBzdHlsZT0iZm9udC1zaXplOjEwLjVwdDtmb250LWZhbWlseTomcXVvdDtBcmlh bCZxdW90OyxzYW5zLXNlcmlmO2NvbG9yOiMyNTI1MjU7YmFja2dyb3VuZDp3aGl0ZSI+NjRLQiBi bG9ja3M/IERvZXMgdGhpcyBtZWFuIEkgdXNlIDY0S0Igb24gdGhlIGlzY3NpIExVTj8gU29ycnkg aWYgdGhpcyBpcyBhIHN0dXBpZCBxdWVzdGlvbi48L3NwYW4+PC9wPjwvZGl2PjwvZGl2PjwvYmxv Y2txdW90ZT48L2Rpdj48L2Rpdj48L2Rpdj48ZGl2IGRpcj0iYXV0byI+PGJyPjwvZGl2PjxkaXYg ZGlyPSJhdXRvIj5ZZXMsIHFjb3cyIHVzZXMgNjRLLCBidXQgSSYjMzk7bSB1bnN1cmUgaWYgdGhh dCYjMzk7cyBvcHRpbWFsIGluIGFueSB3YXkgdG8gdGhlIHVuZGVybHlpbmcgZGlza3MuwqA8L2Rp dj48ZGl2IGRpcj0iYXV0byI+SSBkb3VidCBpdCBtYWtlcyBhIG5vdGljZWFibGUgZGlmZmVyZW5j ZS7CoDwvZGl2PjxkaXYgZGlyPSJhdXRvIj5ZLsKgPC9kaXY+PGRpdiBkaXI9ImF1dG8iPjxicj48 L2Rpdj48ZGl2IGRpcj0iYXV0byI+PGRpdiBjbGFzcz0iZ21haWxfZXh0cmEiPjxkaXYgY2xhc3M9 ImdtYWlsX3F1b3RlIj48YmxvY2txdW90ZSBjbGFzcz0icXVvdGUiIHN0eWxlPSJtYXJnaW46MCAw IDAgLjhleDtib3JkZXItbGVmdDoxcHggI2NjYyBzb2xpZDtwYWRkaW5nLWxlZnQ6MWV4Ij48ZGl2 IGxhbmc9IkVOLVVTIiBsaW5rPSIjMDU2M0MxIiB2bGluaz0iIzk1NEY3MiI+PGRpdiBjbGFzcz0i bV8yMTY3MjE2MDA4ODk0NTE5OTY1V29yZFNlY3Rpb24xIj48cCBjbGFzcz0iTXNvTm9ybWFsIj48 c3BhbiBzdHlsZT0iZm9udC1zaXplOjEwLjVwdDtmb250LWZhbWlseTomcXVvdDtBcmlhbCZxdW90 OyxzYW5zLXNlcmlmO2NvbG9yOiMyNTI1MjU7YmFja2dyb3VuZDp3aGl0ZSI+PHU+PC91Pjx1Pjwv dT48L3NwYW4+PC9wPgo8cCBjbGFzcz0iTXNvTm9ybWFsIj48c3BhbiBzdHlsZT0iZm9udC1zaXpl OjEwLjVwdDtmb250LWZhbWlseTomcXVvdDtBcmlhbCZxdW90OyxzYW5zLXNlcmlmO2NvbG9yOiMy NTI1MjU7YmFja2dyb3VuZDp3aGl0ZSI+PHU+PC91PsKgPHU+PC91Pjwvc3Bhbj48L3A+CjxwIGNs YXNzPSJNc29Ob3JtYWwiPjxzcGFuIHN0eWxlPSJmb250LXNpemU6MTAuNXB0O2ZvbnQtZmFtaWx5 OiZxdW90O0FyaWFsJnF1b3Q7LHNhbnMtc2VyaWY7Y29sb3I6IzI1MjUyNTtiYWNrZ3JvdW5kOndo aXRlIj5SZWdhcmRzLDx1PjwvdT48dT48L3U+PC9zcGFuPjwvcD4KPHAgY2xhc3M9Ik1zb05vcm1h bCI+PHNwYW4gc3R5bGU9ImZvbnQtc2l6ZToxMC41cHQ7Zm9udC1mYW1pbHk6JnF1b3Q7QXJpYWwm cXVvdDssc2Fucy1zZXJpZjtjb2xvcjojMjUyNTI1O2JhY2tncm91bmQ6d2hpdGUiPldpbGxpYW08 L3NwYW4+PHU+PC91Pjx1PjwvdT48L3A+CjwvZGl2Pgo8L2Rpdj4KCjxicj5fX19fX19fX19fX19f X19fX19fX19fX19fX19fX188d2JyPl9fX19fX19fX19fX19fX19fPGJyPgpVc2VycyBtYWlsaW5n IGxpc3Q8YnI+CjxhIGhyZWY9Im1haWx0bzpVc2Vyc0BvdmlydC5vcmciPlVzZXJzQG92aXJ0Lm9y ZzwvYT48YnI+CjxhIGhyZWY9Imh0dHA6Ly9saXN0cy5vdmlydC5vcmcvbWFpbG1hbi9saXN0aW5m by91c2VycyIgcmVsPSJub3JlZmVycmVyIiB0YXJnZXQ9Il9ibGFuayI+aHR0cDovL2xpc3RzLm92 aXJ0Lm9yZy88d2JyPm1haWxtYW4vbGlzdGluZm8vdXNlcnM8L2E+PGJyPgo8YnI+PC9ibG9ja3F1 b3RlPjwvZGl2Pjxicj48L2Rpdj48L2Rpdj48L2Rpdj4K --===============4848034564774608386==--