* [linux-lvm] How do I properly backup and restore / on LVM2
@ 2010-04-12 16:14 Alan Pek
2010-04-12 16:51 ` Phillip Susi
0 siblings, 1 reply; 10+ messages in thread
From: Alan Pek @ 2010-04-12 16:14 UTC (permalink / raw)
To: linux-lvm
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Hi Folks,
How do I properly backup and restore / on LVM2 , e.g.
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/rootvg-rootlv
2621356 1902288 719068 73% /
tmpfs 25165824 4 25165820 1% /dev/shm
/dev/cciss/c0d0p1 106040 45992 60048 44% /boot
Am running SLES9 , should be similar in Redhat and my pvdisplay looks
like, HW RAID 1.
pvdisplay
--- Physical volume ---
PV Name /dev/cciss/c0d1p1
VG Name idrwebvg
PV Size 136.70 GB / not usable 0
Allocatable yes
PE Size (KByte) 4096
Total PE 34994
Free PE 20914
Allocated PE 14080
PV UUID SFsdRA-ENGD-63KU-MV7x-OvuE-Rx5T-9fFYpb
--- Physical volume ---
PV Name /dev/cciss/c0d0p2
VG Name rootvg
PV Size 68.23 GB / not usable 0
Allocatable yes
PE Size (KByte) 4096
Total PE 17467
Free PE 16571
Allocated PE 896
PV UUID wq9uRc-Gn9y-BbZI-PMLg-iWaC-PjlE-BsldqC
Regards
Alan
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^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-12 16:14 [linux-lvm] How do I properly backup and restore / on LVM2 Alan Pek
@ 2010-04-12 16:51 ` Phillip Susi
2010-04-12 18:50 ` Robert Mortimer
` (2 more replies)
0 siblings, 3 replies; 10+ messages in thread
From: Phillip Susi @ 2010-04-12 16:51 UTC (permalink / raw)
To: LVM general discussion and development; +Cc: Alan Pek
On 4/12/2010 12:14 PM, Alan Pek wrote:
>
> Hi Folks,
>
> How do I properly backup and restore / on LVM2 , e.g.
The same way you would without LVM2. Perhaps tar or dump? If you use
dump then lvm allows you to make a snapshot and back that up instead so
you don't have to boot to single user mode and remount ro.
^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-12 16:51 ` Phillip Susi
@ 2010-04-12 18:50 ` Robert Mortimer
2010-04-13 4:11 ` Alan Pek
2010-04-13 10:03 ` Alan Pek
2 siblings, 0 replies; 10+ messages in thread
From: Robert Mortimer @ 2010-04-12 18:50 UTC (permalink / raw)
To: LVM general discussion and development
On 12 April 2010 17:51, Phillip Susi <psusi@cfl.rr.com> wrote:
> On 4/12/2010 12:14 PM, Alan Pek wrote:
>>
>> Hi Folks,
>>
>> How do I properly backup and restore / on LVM2 , e.g.
>
> The same way you would without LVM2. �Perhaps tar or dump? �If you use
> dump then lvm allows you to make a snapshot and back that up instead so
> you don't have to boot to single user mode and remount ro.
>
I take a snapshot and then use rdiff-backup to get a D-2-D backup. It
works well for me and has been used once or twice. We also run a month
end tape backup using Yosemite backup http://www.barracudaware.com/
you can run the rdiff over SSH using pre-exchanged keys for off site
backup. There are also some Amazon cloud based solutions but don't
expect you data to come back in a flash (best used as a fall back in
case of the building burning down).
In short the LVM is not the important part (unless you need the
snapshot) the main things are
Qty of data
Format of backup
On-site or Off-site
Incremental of Full
Acceptable recovery time
Down time during backup
Performance during backup
And all the normal stuff
Rob Mortimer
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-12 16:51 ` Phillip Susi
2010-04-12 18:50 ` Robert Mortimer
@ 2010-04-13 4:11 ` Alan Pek
2010-04-13 17:54 ` Allen, Jack
2010-04-13 10:03 ` Alan Pek
2 siblings, 1 reply; 10+ messages in thread
From: Alan Pek @ 2010-04-13 4:11 UTC (permalink / raw)
To: linux-lvm
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Hi
dump does not come with standard Suse.
Where can I get the rpm.
Have not used dump before and how do I create a snapshot ?
How do I recreate my existing LVM2 structure if my root disk is gone ?
Appreciate as we are using tsm which is tedious/problematic to restore.
One will have pxe build and then install tsm and then restore.
Appreciate your reply.
Regards
Alan
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-12 16:51 ` Phillip Susi
2010-04-12 18:50 ` Robert Mortimer
2010-04-13 4:11 ` Alan Pek
@ 2010-04-13 10:03 ` Alan Pek
2010-04-13 10:30 ` Sébastien Roy
` (2 more replies)
2 siblings, 3 replies; 10+ messages in thread
From: Alan Pek @ 2010-04-13 10:03 UTC (permalink / raw)
To: linux-lvm
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Hi Folks,
Read through the doc and tried to create a snapshot lv for rootlv by
doing, but failed.
singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap rootvg
Path required for Logical Volume "rootvg"
The origin name should include the volume group.
lvcreate: Create a logical volume
lvcreate
[-A|--autobackup {y|n}]
[--addtag Tag]
[--alloc AllocationPolicy]
[-C|--contiguous {y|n}]
[-d|--debug]
[-h|-?|--help]
[-i|--stripes Stripes [-I|--stripesize StripeSize]]
{-l|--extents LogicalExtentsNumber |
-L|--size LogicalVolumeSize[kKmMgGtT]}
[-M|--persistent {y|n}] [--major major] [--minor minor]
[-m|--mirrors Mirrors]
[-n|--name LogicalVolumeName]
[-p|--permission {r|rw}]
[-r|--readahead ReadAheadSectors]
[-R|--regionsize MirrorLogRegionSize]
[-t|--test]
[--type VolumeType]
[-v|--verbose]
[-Z|--zero {y|n}]
[--version]
VolumeGroupName [PhysicalVolumePath...]
lvcreate -s|--snapshot
[-c|--chunksize]
[-A|--autobackup {y|n}]
[--addtag Tag]
[--alloc AllocationPolicy]
[-C|--contiguous {y|n}]
[-d|--debug]
[-h|-?|--help]
[-i|--stripes Stripes [-I|--stripesize StripeSize]]
{-l|--extents LogicalExtentsNumber |
-L|--size LogicalVolumeSize[kKmMgGtT]}
[-M|--persistent {y|n}] [--major major] [--minor minor]
[-n|--name LogicalVolumeName]
[-p|--permission {r|rw}]
[-r|--readahead ReadAheadSectors]
[-t|--test]
[-v|--verbose]
[--version]
OriginalLogicalVolume[Path] [PhysicalVolumePath...]
singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap /dev/mapper/rootvg-rootlv
Volume group "mapper" doesn't exist
singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap /dev/md1
"/dev/md1": Invalid path for Logical Volume
The origin name should include the volume group.
lvcreate: Create a logical volume
lvcreate
[-A|--autobackup {y|n}]
[--addtag Tag]
[--alloc AllocationPolicy]
[-C|--contiguous {y|n}]
[-d|--debug]
[-h|-?|--help]
[-i|--stripes Stripes [-I|--stripesize StripeSize]]
{-l|--extents LogicalExtentsNumber |
-L|--size LogicalVolumeSize[kKmMgGtT]}
[-M|--persistent {y|n}] [--major major] [--minor minor]
[-m|--mirrors Mirrors]
[-n|--name LogicalVolumeName]
[-p|--permission {r|rw}]
[-r|--readahead ReadAheadSectors]
[-R|--regionsize MirrorLogRegionSize]
[-t|--test]
[--type VolumeType]
[-v|--verbose]
[-Z|--zero {y|n}]
[--version]
VolumeGroupName [PhysicalVolumePath...]
lvcreate -s|--snapshot
[-c|--chunksize]
[-A|--autobackup {y|n}]
[--addtag Tag]
[--alloc AllocationPolicy]
[-C|--contiguous {y|n}]
[-d|--debug]
[-h|-?|--help]
[-i|--stripes Stripes [-I|--stripesize StripeSize]]
{-l|--extents LogicalExtentsNumber |
-L|--size LogicalVolumeSize[kKmMgGtT]}
[-M|--persistent {y|n}] [--major major] [--minor minor]
[-n|--name LogicalVolumeName]
[-p|--permission {r|rw}]
[-r|--readahead ReadAheadSectors]
[-t|--test]
[-v|--verbose]
[--version]
OriginalLogicalVolume[Path] [PhysicalVolumePath...]
singmrecfp1001:~ #
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^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-13 10:03 ` Alan Pek
@ 2010-04-13 10:30 ` Sébastien Roy
2010-04-13 11:47 ` Alan Pek
2010-04-13 14:32 ` Phillip Susi
2010-04-13 19:08 ` Stuart D. Gathman
2 siblings, 1 reply; 10+ messages in thread
From: Sébastien Roy @ 2010-04-13 10:30 UTC (permalink / raw)
To: linux-lvm
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Hello,
Maybe you can try
lvcreate -L 2.5g -s -n rsnap /dev/rootvg/rootlv
Already faced this kind of situation on previous RH releases (4.3 ?) where
/dev/mapper could not (yet) be used with some LVM commands.
2010/4/13 Alan Pek <alan.pek@db.com>
>
> Hi Folks,
>
> Read through the doc and tried to create a snapshot lv for rootlv by doing,
> but failed.
>
> singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap rootvg
> Path required for Logical Volume "rootvg"
> The origin name should include the volume group.
> lvcreate: Create a logical volume
> lvcreate
> [-A|--autobackup {y|n}]
> [--addtag Tag]
> [--alloc AllocationPolicy]
> [-C|--contiguous {y|n}]
> [-d|--debug]
> [-h|-?|--help]
> [-i|--stripes Stripes [-I|--stripesize StripeSize]]
> {-l|--extents LogicalExtentsNumber |
> -L|--size LogicalVolumeSize[kKmMgGtT]}
> [-M|--persistent {y|n}] [--major major] [--minor minor]
> [-m|--mirrors Mirrors]
> [-n|--name LogicalVolumeName]
> [-p|--permission {r|rw}]
> [-r|--readahead ReadAheadSectors]
> [-R|--regionsize MirrorLogRegionSize]
> [-t|--test]
> [--type VolumeType]
> [-v|--verbose]
> [-Z|--zero {y|n}]
> [--version]
> VolumeGroupName [PhysicalVolumePath...]
>
> lvcreate -s|--snapshot
> [-c|--chunksize]
> [-A|--autobackup {y|n}]
> [--addtag Tag]
> [--alloc AllocationPolicy]
> [-C|--contiguous {y|n}]
> [-d|--debug]
> [-h|-?|--help]
> [-i|--stripes Stripes [-I|--stripesize StripeSize]]
> {-l|--extents LogicalExtentsNumber |
> -L|--size LogicalVolumeSize[kKmMgGtT]}
> [-M|--persistent {y|n}] [--major major] [--minor minor]
> [-n|--name LogicalVolumeName]
> [-p|--permission {r|rw}]
> [-r|--readahead ReadAheadSectors]
> [-t|--test]
> [-v|--verbose]
> [--version]
> OriginalLogicalVolume[Path] [PhysicalVolumePath...]
>
>
> singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap /dev/mapper/rootvg-rootlv
> Volume group "mapper" doesn't exist
>
> singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap /dev/md1
> "/dev/md1": Invalid path for Logical Volume
> The origin name should include the volume group.
> lvcreate: Create a logical volume
>
> lvcreate
> [-A|--autobackup {y|n}]
> [--addtag Tag]
> [--alloc AllocationPolicy]
> [-C|--contiguous {y|n}]
> [-d|--debug]
> [-h|-?|--help]
> [-i|--stripes Stripes [-I|--stripesize StripeSize]]
> {-l|--extents LogicalExtentsNumber |
> -L|--size LogicalVolumeSize[kKmMgGtT]}
> [-M|--persistent {y|n}] [--major major] [--minor minor]
> [-m|--mirrors Mirrors]
> [-n|--name LogicalVolumeName]
> [-p|--permission {r|rw}]
> [-r|--readahead ReadAheadSectors]
> [-R|--regionsize MirrorLogRegionSize]
> [-t|--test]
> [--type VolumeType]
> [-v|--verbose]
> [-Z|--zero {y|n}]
> [--version]
> VolumeGroupName [PhysicalVolumePath...]
>
> lvcreate -s|--snapshot
> [-c|--chunksize]
> [-A|--autobackup {y|n}]
> [--addtag Tag]
> [--alloc AllocationPolicy]
> [-C|--contiguous {y|n}]
> [-d|--debug]
> [-h|-?|--help]
> [-i|--stripes Stripes [-I|--stripesize StripeSize]]
> {-l|--extents LogicalExtentsNumber |
> -L|--size LogicalVolumeSize[kKmMgGtT]}
> [-M|--persistent {y|n}] [--major major] [--minor minor]
> [-n|--name LogicalVolumeName]
> [-p|--permission {r|rw}]
> [-r|--readahead ReadAheadSectors]
> [-t|--test]
> [-v|--verbose]
> [--version]
> OriginalLogicalVolume[Path] [PhysicalVolumePath...]
>
>
> singmrecfp1001:~ #
>
>
> ---
>
> This e-mail may contain confidential and/or privileged information. If you
> are not the intended recipient (or have received this e-mail in error)
> please notify the sender immediately and destroy this e-mail. Any
> unauthorized copying, disclosure or distribution of the material in this
> e-mail is strictly forbidden.
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>
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^ permalink raw reply [flat|nested] 10+ messages in thread* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-13 10:30 ` Sébastien Roy
@ 2010-04-13 11:47 ` Alan Pek
0 siblings, 0 replies; 10+ messages in thread
From: Alan Pek @ 2010-04-13 11:47 UTC (permalink / raw)
To: linux-lvm
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Hi Folks,
Thanks.
singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap /dev/rootvg/rootlv
Logical volume "rsnap" created
But why the above work ?
And
singmrecfp1001:~ # mount /dev/mapper/rootvg-rsnap /mnt/rootlv/snap
singmrecfp1001:~ # df -k
Filesystem 1K-blocks Used Available Use% Mounted on
/dev/mapper/rootvg-rootlv
2621356 1637876 983480 63% /
tmpfs 4000100 4 4000096 1% /dev/shm
/dev/md0 102712 40056 62656 39% /boot
/dev/mapper/rootvg-rsnap
2621356 1636964 984392 63% /mnt/rootlv/snap
However I don't see any lv with lvs
singmrecfp1001:~ # lvs
LV VG Attr LSize Origin Snap% Move Log Copy%
rootlv rootvg owi-ao 2.50G
swaplv rootvg -wi-ao 1.00G
I will now mount a NFS filesystem and do a tar of this snapshot.
Is there anything I have to take care if now, my rootdisk is gone.
How do I restore from this snapshot , any specific settings like creating
bootable block ?
The root filesystem is reiserfs and it has software mirrored.
Regards
Alan
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-13 10:03 ` Alan Pek
2010-04-13 10:30 ` Sébastien Roy
@ 2010-04-13 14:32 ` Phillip Susi
2010-04-13 19:08 ` Stuart D. Gathman
2 siblings, 0 replies; 10+ messages in thread
From: Phillip Susi @ 2010-04-13 14:32 UTC (permalink / raw)
To: LVM general discussion and development; +Cc: Alan Pek
On 4/13/2010 6:03 AM, Alan Pek wrote:
>
> Hi Folks,
>
> Read through the doc and tried to create a snapshot lv for rootlv by
> doing, but failed.
>
> singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap rootvg
> Path required for Logical Volume "rootvg"
> The origin name should include the volume group.
> lvcreate: Create a logical volume
You need to specify the name of the logical volume you are trying to
snapshot but you only gave the volume group name. Try rootvg/rootlv,
assuming your root lv is named "rootlv".
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [linux-lvm] How do I properly backup and restore / on LVM2
2010-04-13 10:03 ` Alan Pek
2010-04-13 10:30 ` Sébastien Roy
2010-04-13 14:32 ` Phillip Susi
@ 2010-04-13 19:08 ` Stuart D. Gathman
2 siblings, 0 replies; 10+ messages in thread
From: Stuart D. Gathman @ 2010-04-13 19:08 UTC (permalink / raw)
To: LVM general discussion and development
On Tue, 13 Apr 2010, Alan Pek wrote:
> Read through the doc and tried to create a snapshot lv for rootlv by
> doing, but failed.
>
> singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap rootvg
> Path required for Logical Volume "rootvg"
> The origin name should include the volume group.
You forgot the LV name. E.g.
singmrecfp1001:~ # lvcreate -L 2.5g -s -n rsnap rootvg/myroot
--
Stuart D. Gathman <stuart@bmsi.com>
Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
"Confutatis maledictis, flammis acribus addictis" - background song for
a Microsoft sponsored "Where do you want to go from here?" commercial.
^ permalink raw reply [flat|nested] 10+ messages in thread
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2010-04-12 16:14 [linux-lvm] How do I properly backup and restore / on LVM2 Alan Pek
2010-04-12 16:51 ` Phillip Susi
2010-04-12 18:50 ` Robert Mortimer
2010-04-13 4:11 ` Alan Pek
2010-04-13 17:54 ` Allen, Jack
2010-04-13 10:03 ` Alan Pek
2010-04-13 10:30 ` Sébastien Roy
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