2009/7/24 TYURIN Aleksey <Aleksey.TYURIN@xxxxxxxxxxxxx> > Hi > > To create the snapshot you need to have enough unpartitioned space in LVM > value group. > Alternatively, you can take this space from exists LVM-logical volume to > valume group > > umount /dev/VolGroup00/LogVol00 > > resize_reiserfs -s-1G /dev/VolGroup00/LogVol00 > (for riserfs) > or > resize2fs /dev/VolGroup00/LogVol00 18G > (for ext3) > > lvreduce -L-1G /dev/VolGroup00/LogVol00 > mount /dev/VolGroup00/LogVol00 > > Can you show?: > vgdisplay > yes of course: vgdisplay --- Volume group --- VG Name VolGroup00 System ID Format lvm2 Metadata Areas 2 Metadata Sequence No 6 VG Access read/write VG Status resizable MAX LV 0 Cur LV 1 Open LV 1 Max PV 0 Cur PV 2 Act PV 2 VG Size 19,06 GB PE Size 32,00 MB Total PE 610 Alloc PE / Size 610 / 19,06 GB Free PE / Size 0 / 0 VG UUID nlbCIt-jUrq-d0qk-pnN8-tM90-B3w1-0vVVEL The fs is ext3. I´m going to try to reduce the filesystem as you suggested. One thing, what happens If I dont use LVM at all, (I have a lot of system with out it). How can I make a snapshot of a Xen Image? Greetings, ESG > > > ?? > > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx [mailto: > redhat-list-bounces@xxxxxxxxxx] On Behalf Of ESGLinux > Sent: Friday, July 24, 2009 10:40 AM > To: General Red Hat Linux discussion list > Subject: Re: backup system for RHEL > > Hi, > this sounds interesting, I didn´t know the -s option of lvcreate. > I have a problem with this. In my VG I haven´t free space. When I run the > command: > > lvcreate -s -L 1G -n MySnap1 /dev/VolGroup00/LogVol00 > Insufficient free extents (0) in volume group VolGroup00: 32 required > > I have this: > > /dev/mapper/VolGroup00-LogVol00 > 19360436 13805512 4555620 76% /home > > and lvdisplay: > lvdisplay > --- Logical volume --- > LV Name /dev/VolGroup00/LogVol00 > VG Name VolGroup00 > LV UUID 8BRqMo-K9g5-2Pym-SZfS-Wte3-ZMvM-cqYMCv > LV Write Access read/write > LV Status available > # open 1 > LV Size 19,06 GB > Current LE 610 > Segments 2 > Allocation inherit > Read ahead sectors auto > - currently set to 256 > Block device 253:0 > > > what can I do in this situation? I´m not an expert with LVM > > Thanks > > ESG > > > > > > 2009/7/23 Geofrey Rainey <Geofrey.Rainey@xxxxxxxxxx> > > > Oh and by the way, after the dd is finished you can lvremove the > > snapshot file. > > > > -----Original Message----- > > From: redhat-list-bounces@xxxxxxxxxx [mailto: > > redhat-list-bounces@xxxxxxxxxx] On Behalf Of Geofrey Rainey > > Sent: Friday, 24 July 2009 9:16 a.m. > > To: General Red Hat Linux discussion list > > Subject: RE: backup system for RHEL > > > > I use Xen snapshot like so: > > > > 1. create a snapshot file - this can probably be quite small > > (depending on usage but 1G is probably enough) > > > > lvcreate -s -L 1G -n <name of snapshot> > > /dev/<volume_group>/<logical_volume_name> > > > > 2. then backup your partition with something like this: > > > > dd if=/dev/<volume_group>/<name of snapshot> of=<path/lvm_backup.img> > > bs=1M > > > > 3. if you need to restore, do the following: > > > > dd if=< path/lvm_backup.img > > of=/dev/<volume_group>/<logical_volume_name> > > > > Of course you'll need as much space as the original partition for this > > but that's the only solution I think. > > > > > > > > -----Original Message----- > > From: redhat-list-bounces@xxxxxxxxxx [mailto: > > redhat-list-bounces@xxxxxxxxxx] On Behalf Of ESGLinux > > Sent: Friday, 24 July 2009 12:46 a.m. > > To: General Red Hat Linux discussion list > > Subject: Re: backup system for RHEL > > > > Thanks for your answer, > > I´ll take a look at openfiler, it looks great. > > > > One question, how do I make a Xen snapshot? With vmware I see the > > option, but with Xen not. > > > > any help? > > > > thanks, > > > > ESG > > > > > > > > > -- > > redhat-list mailing list > > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=subscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > ========================================================== > > For more information on the Television New Zealand Group, visit us > > online at tvnz.co.nz > > ========================================================== > > CAUTION: This e-mail and any attachment(s) contain information that > > is intended to be read only by the named recipient(s). 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