[CentOS] 'yum update' rollback or .. ?
Theo Band
theo.band at greenpeak.comFri Jun 22 11:06:10 UTC 2012
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On 06/22/2012 09:42 AM, przemolicc at poczta.fm wrote: > Hello, > > we have several physical servers (CentOS 5.*) with rather critical applications where (because of stability) > we don't do regularly 'yum update'. In virtualized environemnts (under Vmware) > we do a snapshot, then 'yum update', reboot and if something is wrong we rollback the snapshot. > On physical servers we cannot do that. I have read about rollback option of rpm but not sure if > this is reliable solution. What is your best practise regarding "rollbacking" 'yum update' on > physical servers ? > One solution would be to use lvm snapshots. Create a snapshot of the root volume (lvcreate -s VolGroup00/LogVol00 -n rootsnapshot -L 10G), do an update and see if it works. If not, boot into rescue mode and copy the content from the snapshot back to the original. Make sure the snapshot gets the same size as the original volume. This is important if you want to copy back all the data. Theo
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