Hi,
I used the patchs for LVM2.02.54, however, when i compiled it, an err came:
../lib/liblvm-internal.a(lv_manip.o): In function `lv_extend':
lv_manip.c:(.text+0x629a): undefined reference to `last_seg'
where is the 'last_seg' 's definition?
lv_manip.c:(.text+0x629a): undefined reference to `last_seg'
where is the 'last_seg' 's definition?
my linux kernel version is 2.6.18.
thank you!
best regards
Bubsy
2010/3/10 Mikhail Klepachevskyy <mikhailk1@xxxxxxxxxx>
Hello!
Big thanks! It helped!
On Wed, Mar 10, 2010 at 08:11:11AM -0500, Mikulas Patocka wrote:
>
> You need to suspend and resume the origin device after create message and
> before attaching the snapshot.
>> > I tried to test multisnapshots but unfortunately got some errors.<skip>
> > Here is what I did:
> >
> > # echo 0 `blockdev --getsize /dev/mapper/vg1-lv1` multisnapshot \
> > /dev/mapper/vg1-lv1 /dev/mapper/vg1-lv2 16 0 mikulas 0\
> > | dmsetup create ms
> >
> > # dmsetup message /dev/mapper/ms 0 create
>
> dmsetup suspend ms
> dmsetup resume ms
>
> > # echo 0 `blockdev --getsize /dev/mapper/vg1-lv1` multisnap-snap \
> > /dev/mapper/vg1-lv1 0 | dmsetup create ms0
> >
> > At this point I got the next error:
> > device-mapper: reload ioctl failed: No such file or directory
> > Command failed
> >
> > And these lines appeared in dmesg:
> > [ 6876.506623] device-mapper: table: 252:3: multisnap-snap: Snapshot with this id doesn't exist
> > [ 6876.506629] device-mapper: ioctl: error adding target to table
> >
> > Could you check all the steps I performed right and what could cause
> > those error messages?
> >
>> But rather, you could use userspace support for shared snapshots, it makes--
> the use much easier, you can use lvcreate, lvremove, lvresize commands:
>
> for lvm-2.02.54:
> http://people.redhat.com/mpatocka/patches/userspace/new-snapshots/lvm-2.02.54/
> for lvm-2.02.60:
> http://people.redhat.com/mpatocka/patches/userspace/new-snapshots/lvm-2.02.60/
> for lvm-2.02.62:
> http://people.redhat.com/msnitzer/patches/multisnap/lvm2/LVM2-2.02.62/
Best wishes,
Mikhail Klepachevskyy
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