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Date: Thu, 13 Jul 2006 15:10:31 -0400
From: Jason Keltz <jas@cse.yorku.ca>
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Subject: Re: [linux-lvm] lvm2 volumes not available on boot
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To: LVM general discussion and development <linux-lvm@redhat.com>

Dieter St=EF=BF=BDken wrote:
> Jason Keltz wrote:
>> Before the vgscan is run, here are the loaded modules:
>>
>> Module                  Size  Used by
>> dm_mirror              28577  0
>> dm_mod                 59717  1 dm_mirror
>> joydev                 13953  0
>> button                 10449  0
>> battery                12741  0
>> ac                      8773  0
>> uhci_hcd               32729  0
>> ehci_hcd               31813  0
>> 3w_9xxx                35909  0
>> e1000                  99757  0
>> floppy                 57937  0
>> ext3                  118729  1
>> jbd                    60761  1 ext3
>> ata_piix               13381  1
>> libata                 57885  1 ata_piix
>> sd_mod                 20417  2
>> scsi_mod              116941  3 3w_9xxx,libata,sd_mod
>>
>> ... so "dm_mod" is actually loaded, and as far as I know, that's the
>> lvm2 module. =20
>=20
> I also have two 3w_9xxx since a few weeks, works great!
>=20
> If it becomes /dev/sdb, have a look into /sys/block/sdb and
> /proc/partitions if it appears correctly. Also, certain devices
> may be excluded from scanning via /etc/lvm/lvm.conf.
>=20
> Does hotplug create /dev/sdb dynamically and in time during boot?
>=20
> In the beginning I got problems, as the 3ware controller
> and my SATA backplane both may be configured to delay the
> disk spinup. This caused some timeout trouble.

/sys/block/sdb existed, but I think you're right re: disk spinup since I=20
inserted a "sleep 5" into rc.sysinit before the call to vgscan and it=20
works now!

Jason.