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No, that's only the case when you want to use dual primary mode.<br>
<br>
I'm not sure how things work with existing data on a partition,
never did that. Maybe someone else can say something about that.<br>
<br>
Cheers,<br>
<br>
Dirk<br>
<br>
<br>
<div class="moz-cite-prefix">Op 28-5-2013 11:50, Steve Kieu schreef:<br>
</div>
<blockquote
cite="mid:CAAQ-o+-nP+8Y=gxXn0WnJv3BmRscVK1Z_Frh-0QRtscOEYQVwA@mail.gmail.com"
type="cite">
<div dir="ltr">
<div>
<div>
<div>I believe that you need a network filesystem on top of
DRDB rather.<br>
<br>
</div>
Example like Redhat GFS, ocfs2 etc..<br>
<br>
</div>
ext4 is not network aware FS.<br>
<br>
</div>
cheers<br>
</div>
<div class="gmail_extra">
<br>
<br>
<div class="gmail_quote">On Tue, May 28, 2013 at 6:50 PM,
Vasiliy I Ozerov <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:vozerov@2reallife.com"
target="_blank">vozerov@2reallife.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Good day! </div>
<div><br>
</div>
<div>I have a little problem running drbd.</div>
<div><br>
</div>
<div>System: Debian Squeeze 6.0.6</div>
<div>Kernel: 2.6.32-5-amd64</div>
<div>DRBD: 8.3.13-2</div>
<div><br>
</div>
<div>Config for home resource:</div>
<div><br>
</div>
<div>
<div>resource home {</div>
<div><span style="white-space:pre-wrap"> </span>on backup
{</div>
<div><span style="white-space:pre-wrap"> </span>device
/dev/drbd1;</div>
<div><span style="white-space:pre-wrap"> </span>disk
/dev/sda5;</div>
<div><span style="white-space:pre-wrap"> </span>address
<a moz-do-not-send="true" href="http://78.47.3.54:7789"
target="_blank">78.47.3.54:7789</a>;</div>
<div><span style="white-space:pre-wrap"> </span>meta-disk
/dev/ram0[14];</div>
<div><span style="white-space:pre-wrap"> </span>}</div>
<div><br>
</div>
<div><span style="white-space:pre-wrap"> </span>on
backup2 {</div>
<div><span style="white-space:pre-wrap"> </span>device
/dev/drbd1;</div>
<div><span style="white-space:pre-wrap"> </span>disk
/dev/sda4;</div>
<div><span style="white-space:pre-wrap"> </span>address
<a moz-do-not-send="true" href="http://78.47.3.86:7789"
target="_blank">78.47.3.86:7789</a>;</div>
<div><span style="white-space:pre-wrap"> </span>meta-disk
internal;</div>
<div><span style="white-space:pre-wrap"> </span>}</div>
<div>}</div>
<div><br>
</div>
<div>
<div>ram0 - 2Gb Size</div>
<div><br>
</div>
</div>
<div>I make the following actions:</div>
<div><br>
</div>
<div># drbdadm create-md home</div>
<div># /etc/init.d/drbd start</div>
<div><br>
</div>
<div>
Then I see the following:</div>
<div><br>
</div>
<div>
<div>root@backup2 /etc/drbd.d # cat /proc/drbd</div>
<div>version: 8.3.7 (api:88/proto:86-91)</div>
<div>srcversion: EE47D8BF18AC166BE219757</div>
<div><br>
</div>
<div> 1: cs:Connected ro:Secondary/Secondary
ds:Inconsistent/Inconsistent B r----</div>
<div> ns:0 nr:0 dw:0 dr:0 al:0 bm:0 lo:0 pe:0 ua:0
ap:0 ep:1 wo:b oos:4293787648</div>
</div>
</div>
<div>
<div><br>
</div>
<div>Then I started sync:</div>
<div><br>
</div>
<div>root@backup /etc/drbd.d # drbdadm --
--overwrite-data-of-peer primary home</div>
<div>
<div>root@backup /etc/drbd.d # cat /proc/drbd</div>
<div>version: 8.3.7 (api:88/proto:86-91)</div>
<div>srcversion: EE47D8BF18AC166BE219757</div>
<div><br>
</div>
<div> 1: cs:SyncSource ro:Primary/Secondary
ds:UpToDate/Inconsistent B r----</div>
<div> ns:11232 nr:0 dw:0 dr:11436 al:0 bm:0 lo:0
pe:21 ua:0 ap:0 ep:1 wo:b oos:4293777088</div>
<div><span style="white-space:pre-wrap"> </span>[>....................]
sync'ed: 0.1% (4193140/4193152)M</div>
<div>
<span style="white-space:pre-wrap"> </span>finish:
110:26:11 speed: 10,560 (10,560) K/sec</div>
</div>
<div><br>
</div>
<div>It's ok. </div>
<div><br>
</div>
<div>But when I try to mount /dev/drbd1 I see the
following:</div>
<div><br>
</div>
<div>
<div>root@backup /etc/drbd.d # mount -t ext4 /dev/drbd1
/home/</div>
<div>mount: wrong fs type, bad option, bad superblock on
/dev/drbd1,</div>
<div> missing codepage or helper program, or other
error</div>
<div> In some cases useful info is found in syslog
- try</div>
<div> dmesg | tail or so</div>
</div>
<div><br>
</div>
<div>And in dmesh I saw, that drbd started to sync only
4Tb:</div>
<div><br>
</div>
<div>
<div>[37354503.285925] block drbd1: Forced to consider
local data as UpToDate!</div>
<div>[37354503.285972] block drbd1: Creating new current
UUID</div>
<div>[37354509.351392] block drbd1: drbd_sync_handshake:</div>
<div>[37354509.351424] block drbd1: self
ACD94469A7E81D3F:0000000000000004:0000000000000000:0000000000000000
bits:1073446912 flags:0</div>
<div>[37354509.351478] block drbd1: peer
0000000000000004:0000000000000000:0000000000000000:0000000000000000
bits:1073446912 flags:0</div>
<div>[37354509.351531] block drbd1: uuid_compare()=2 by
rule 30</div>
<div>[37354509.351557] block drbd1: Becoming sync source
due to disk states.</div>
<div>[37354509.351585] block drbd1: Writing the whole
bitmap, full sync required after drbd_sync_handshake.</div>
<div>[37354509.401466] block drbd1: meta data flush
failed with status -5, disabling md-flushes</div>
<div>[37354509.401501] block drbd1: 4095 GB (1073446912
bits) marked out-of-sync by on disk bit-map.</div>
<div>[37354509.401540] block drbd1: conn( Connected
-> WFBitMapS )</div>
<div>[37354511.724636] block drbd1: conn( WFBitMapS
-> SyncSource )</div>
<div>[37354511.724676] block drbd1: Began resync as
SyncSource (will sync 4293787648 KB [1073446912 bits
set]).</div>
</div>
<div><br>
</div>
<div>I tried to use flexible-meta-disk, but with no luck.</div>
<div><br>
</div>
<div>Can you help me to solve this problem?</div>
<div><br>
</div>
<div>Thank you!</div>
<span class="HOEnZb"><font color="#888888">
<div>
-- </div>
<div>Vasiliy I Ozerov</div>
<div><br>
</div>
</font></span></div>
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<br>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
Steve Kieu
</div>
<br>
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