https://bugzilla.redhat.com/show_bug.cgi?id=1287940
I'm not sure what I saw that made me think the entire drivers/md tree
was included. I deleted the first VM that I used to investigate the
problem, so I can't look at the shell history to figure that one out.
In any case, that's not what drac
a manually
dracut -f --add-drivers "dm-snapshot"
solve the problem
Zitat von Gordon Messmer :
On 12/02/2015 02:48 PM, Gordon Messmer wrote:
I'll try to recreate the problem on a new VM, but that doesn't make
much sense. Including the required module isn't dependent on
creating the snapshot
On 12/02/2015 02:48 PM, Gordon Messmer wrote:
I'll try to recreate the problem on a new VM, but that doesn't make
much sense. Including the required module isn't dependent on creating
the snapshot as far as I can tell.
Crazy pants.
I can reproduce the problem now. I don't know what the hel
LVM is terribly flawed and most imprudent piece of any filesystem that you
can have for snapshot'ing!
The only snapshot-friendly filesystem or volume manager is ZFS.
Whether create a single snapshot or few hundred thousand. It is instant and
no data is lost.
On Thu, Dec 3, 2015 at 12:09 AM, Axel
On 12/02/2015 02:02 PM, Axel Glienke wrote:
ok, thank you very much Gordon.
but you know what the difference?
if i do
1. centos7 installation
2. yum upgrade
3. lvcreate -s ...
4. reboot
then i got the error.
I'll try to recreate the problem on a new VM, but that doesn't make much
sense. I
ok, thank you very much Gordon.
but you know what the difference?
if i do
1. centos7 installation
2. yum upgrade
3. lvcreate -s ...
4. reboot
then i got the error.
if i do your way
1. centos7 installtion
2. snapshot & reboot
3. yum upgrade
4. reboot
then the system start.
Zitat von Gordon
On 12/02/2015 12:05 PM, Axel Glienke wrote:
in journalctl i found:
modprobe: FATAL: Module dm-snapshot not found
...
Can't process LV root_snap: snapshot target support missing from kernel
I installed a very simple CentOS 7 system with an LVM root FS. Created a
snapshot and rebooted, no probl
Ok, kernel needs the module dm-snapshot for snapshot support, but the
modules is storage on a snapshoted-lv ...
you can't make a root_snapshot with centos?
Zitat von Axel Glienke :
in journalctl i found:
modprobe: FATAL: Module dm-snapshot not found
...
Can't process LV root_snap: snapshot
in journalctl i found:
modprobe: FATAL: Module dm-snapshot not found
...
Can't process LV root_snap: snapshot target support missing from kernel
Zitat von Tru Huynh :
On Wed, Dec 02, 2015 at 08:53:39PM +0100, Axel Glienke wrote:
Creating snapshot:
[root@lvmtest ~]# lvcreate -L5G -s -n root_s
On Wed, Dec 02, 2015 at 08:53:39PM +0100, Axel Glienke wrote:
> Creating snapshot:
>
> [root@lvmtest ~]# lvcreate -L5G -s -n root_snap /dev/centos/root
> Reducing COW size 5,00 GiB down to maximum usable size 2,94 GiB.
> Logical volume "root_snap" created.
> [root@lvmtest ~]# lvs
> LV
Creating snapshot:
[root@lvmtest ~]# lvcreate -L5G -s -n root_snap /dev/centos/root
Reducing COW size 5,00 GiB down to maximum usable size 2,94 GiB.
Logical volume "root_snap" created.
[root@lvmtest ~]# lvs
LVVG Attr LSize Pool Origin Data% Meta% Move
Log Cpy%Sync Conv
sorry: centos7 "fresh" minimal with a actual update
cat proc/cmdline:
BOOT_IMAGE=/vmlinuz-3.10.0-229.20.1.el7.x86_64
root=/dev/mapper/centos_root ro rd.lvm.lv=centos/root
rd.lvm.lv=centos/swap crashkernel=auto rhgb quiet LANG=de_DE.UTF-8
systemd.debug
ls /dev/mapper:
centos-swap control
On 12/02/2015 11:09 AM, Axel Glienke wrote:
after a lvm snapshot creation and a reboot are all logical volumes are
missing, only swap is present.
What release is that? And what does /proc/cmdline contain when the
system boots to the dracut shell?
Hello
after a lvm snapshot creation and a reboot are all logical volumes are
missing, only swap is present.
lvcreate -L 5000M -s -n centos_h1-root_snap /dev/mapper/centos_h1-root
lvs
LV VGAttr LSizePool Origin
Data% Meta% Move Log Cpy%Sy
Hi list,
i have an error when i do an lvm snapshot.
The error is like this when i use the command "/sbin/lvcreate -L20G -s -n
/dev/vgraid/vm" :
*semid 5013504: semop failed for cookie 0xd4d23a8: incorrect semaphore
state*
* Failed to set a proper state for notification semaphore identified by
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