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SubjectRe: LVM 2.6 compatibility?
On Wed, 2004-01-07 09:41:17 +0100, venom@sns.it <venom@sns.it>
wrote in message <Pine.LNX.4.43.0401070941040.23681-100000@cibs9.sns.it>:
> yes, there is full back compatibility

Erm, not to mention that I've recently been hit by some bug. This is
with LVM2 userland and LVM1 metadata. I just wanted to create a
snapshot, but I got

machineA#
Rounding up size to full physical extend 252.00 MB
device-mapper: error adding target to table
device-mapper ioctl cmd 9 failed: Invalid argument
Couldn't load device 'vg00-snap1'.
Problem reactivating origin home_lv

and

which leaves me with:

machineB:~# lvdisplay
--- Logical volume ---
LV Name /dev/storage_vg/whole_ftp_area_lv
VG Name storage_vg
LV UUID 000000-0000-0000-0000-0000-0000-000000
LV Write Access read/write
LV snapshot status source of
/dev/storage_vg/tempsnap [INACTIVE]
LV Status NOT available
LV Size 182.50 GB
Current LE 2920
Segments 23
Allocation next free
Read ahead sectors 0
--- Logical volume ---
LV Name /dev/storage_vg/public_storage_lv
VG Name storage_vg
LV UUID 000000-0000-0000-0000-0000-0000-000001
LV Write Access read/write
LV Status available
# open 1
LV Size 54.38 GB
Current LE 870
Segments 8
Allocation next free
Read ahead sectors 0
Block device 254:3
--- Logical volume ---
LV Name /dev/storage_vg/tempsnap
VG Name storage_vg
LV UUID 000000-0000-0000-0000-0000-0000-000002
LV Write Access read/write
LV snapshot status INACTIVE destination for /dev/storage_vg/whole_ftp_area_lv
LV Status available
# open 0
LV Size 182.50 GB
Current LE 2920
Segments 1
Snapshot chunk size 8.00 KB
Allocated to snapshot 100.00%
Allocation next free
Read ahead sectors 0
Block device 254:2
So, after lvcreate -s on two different hosts, the snapshot isn't really
there (albeit vgmknodes creates nodes for them), but any attempt to
access them results in "they're not there". Worse than that, if the
original LV was mounted, anything accessing it will hang in D state, of
course:)

MfG, JBG

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