Re: power interruption -> renamed USB disk
On 03/08/2011 01:20 AM, Ross Boylan wrote:
On Mon, 2011-03-07 at 23:47 -0600, Ron Johnson wrote:
[snip]
IOW=?
In Other Words.
[snip]
I speculate that hotplug hasn't quite gotten (or never gets) the news
the sdc has disappeared, and when it detects a "new" drive it assigns it
the next available location, sdd. But I'm not even sure what the
division of responsibility is between the kernel proper and the hotplug
system. I thought hotplug was supposed to ensure that the same physical
device would end up with the same name every time.
You'd think; the power failure probably exposes an edge case.
That leads to these questions:
1. Is the LV made up of both external *and* internal drives,
or just external?
The LV is in a VG that includes external and internal drives. The
particular LVs that have trouble are entirely on the external drive.
2. When the power flickers, do you do this:
# lvchange -an ${VG}/${LV}
# vgchange -an ${VG}
[unplug/wait/replug the enclosure]
# vgchange -ay ${VG}
# lvchange -ay ${VG}/${LV}
No. The vgchange -an seems problematic since essentially my entire
system is on the VG.
Maybe just "bounce" the LV?
I think that means lvm would not let me deactivate
it; certainly if I succeeded I would be unable to do much of anything.
The VG is lvm2 format.
Hmmm. I think I'd not have designed things that way. Anyhoo,
what's there is there...
--
I prefer banana-flavored energy bars made from tofu.
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