Some question about logical volumes and acl's

[Peer-Joachim Koch]

He,

I have to move some lv from our current file server (hpux 11.0) to a newer machine (also 11.0). For most file systems rsync is doing a nice job, but all acl settings are lost ... :(
All acl are from windows user (using samba).

1) Is there a way to transfer all acl's ?
(getacl -> setacl for each file ??)

2) A question more related to the VG.
Can I export a lv one a single pv from a vg and import everything on the other machine ?

Thanks for your help!

Bye, Peer

[Cem Tugrul]

Hi,

i think this attachment will guide
what you need..

good luck,

[Steven E. Protter]

As far as loving logical volume's go:

Section 2 of your question.

You can use vgexport on an entire volume group and then use vgimport and take the entire volume group to another machine if:

IF the volume group is on disk that can be accessed by both machines.

Otherwise your alternative is to back up the data, create the volume group from scratch on the new machine and restore the data.

SEP

[Peer-Joachim Koch]

Hi,

well most part's of the LVM manual
do I know. I have a small file server
with ~20 pv and 40 lv with 10TB disk space :)

I wanted to move the whole VG, but my boss
wanted everything to be transfer in smaller
units and put together into a new order ....

So if a "lvsplit" is not possible I have
to use rsync. I'm currently trying to build
a rsync with +DA2.0W +DS2.0W -D_LARGEFILE64_SOURCE
to prevent the "out of memory" error for
large folders. (HP will not fix the wrong working function).
However, this is already working. Now I
have to look for ACL's ....

And I have a couple of large lv to transfer
(500G -> 1TB), but my disk pool is not sooo big.

Bye, Peer

[Ermin Borovac]

fbackup/frecover can deal with large files (> 2G) and ACLs.

# fbackup -i -f - | remsh "/usr/sbin/frecover -rv -f -"

[Devender Khatana]

Hi,

Yes , a LV which is allocated on a single PV can be accessed on other host. This can be achived by importing that VG on the second host and then activating VG with "vgchange -a y -q n /dev/vgname". This shall give you access to all those lvols which were on that PV.

HTH,
Devender

[Tim D Fulford]

Whoooo slow down.

You certainly DO NOT want to have the same volume group actie on two machines at the same time. You will corrupt teh data. You CAN move the disks, or disconeect them from one host but please do not try to create some form of clusered file system. If this is what you wnat use NFS.

Regards

Tim