[linux-lvm] LVM2 + Pair GNBD on FC4

[binky123 at excite.com]

Does anybody have any suggestions on what I can use to coalesce partitions together from 3 PC's?  I didn't have much luck over
the weekend on my tests.

Testing Summary on 3 PCs with 2 2TB real partitions each:
local 2TB                   + LVM(2 devices)     : OK
GNBD 2TB(4 imports 2 PCs)   + LVM(6 devices)     : FAIL(mkfs xfs)
GNBD 2TB(2 imports 2 PCs)   + LVM(2 devices)     : FAIL(dd ok,
                                                   mkfs xfs fails)
GNBD 2TB(2 imports 2 PCs)   + MD(2 devices)      : FAIL(dd ok,
                                                   mkfs xfs fails)
GNBD 2TB(2 imports same PC) + LVM(2 devices)     : FAIL(mkfs xfs)
GNBD 2TB(2 imports same PC) + MD(2 devices)      : FAIL(dd 100000 ct ok,
                                                   mkfs xfs fails,
                                                   mkfs ext3 fails)
GNBD 4TB(1 import linear array) + LVM(1 device)  : FAIL(mkfs xfs)
GNBD 4TB(1 import linear array)                  : FAIL(dd 5000 ct ok,
                                                   mkfs xfs fails)
GNBD 2TB(1 import)    + LVM(1 device)  : OK(dd,mkfs xfs on LVM device)
GNBD 2TB(1 import)                     : OK(dd,mkfs xfs on gnbd device)

Testing Summary on 1 PC with 2 2TB partitions and 1 PC with 4 .37GB partitions:
local 2TB                   + LVM(2 devices)     : OK
GNBD .37GB(4 imports 2 PCs) + LVM(6 devices)     : not tested
GNBD .37GB(2 imports same PC) + LVM(2 devices)   : FAIL(dd ok, mkfs xfs fails,
                                                   mkfs xfs waiting for fsync(),
                                                   mkfs reiserfs ok,
                                                   mount reiserfs fails)
GNBD .37GB(2 imports same PC) + MD(2 devices)    : OK(dd,mkfs xfs on MD device,
                                                   mkfs reiserfs ok,
                                                   mount reiserfs fails)
GNBD .74GB(1 import linear array) + LVM(1 device): FAIL(mkfs xfs fails,
                                        dd ok)
GNBD .74GB(1 import linear array)      : OK(dd,mkfs xfs on gnbd device)
GNBD .37GB(1 import)  + LVM(1 device)  : OK(dd,mkfs xfs on LVM device)
GNBD .37GB(1 import)                   : OK(dd,mkfs xfs on gnbd device)




 --- On Sat 02/25, binky123 at excite.com < binky123 at excite.com > wrote:
From: binky123 at excite.com [mailto: binky123 at excite.com]
To: linux-lvm at redhat.com
Date: Sat, 25 Feb 2006 13:01:35 -0500 (EST)
Subject: [linux-lvm] LVM2 + Pair GNBD on FC4

<br>On a standard FC4 2.6.15-1.1831_FC4smp build, I'm trying to get<br>LVM2(lvm2-2.01.08-2.1) to work on a pair of gnbd(gnbd-1.0.2) imported devices.  I'm able to create a volume group and logical volume<br>from one gnbd device and I'm able to create an XFS filesystem on it.<br>I then extend the volume group with another gnbd device and recreate the logical volume to use the full # of extents.  This works.  I now<br>try to create an XFS or an EXT3 filesystem on top of the logical<br>volume and the mkfs process seems to go into a disk wait mode.  ssh access to the machine is still ok, any LVM2 command will hang, sync command will hang.<br><br>Any suggestions on what is happening, debug suggestions or if anyone else has done something similar to this? Thanks.<br><br><br><br><br>_______________________________________________<br>Join Excite! - http://www.excite.com<br>The most personalized portal on the Web!<br><br><br>_______________________________________________<br>linux-lv!
m 
mailing list<br>linux-lvm at redhat.com<br>https://www.redhat.com/mailman/listinfo/linux-lvm<br>read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/<br>

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