So, if I'm understanding this correctly, taking a backup of a running Linux system from another LPAR gives you, at best, an unreliable backup.
That means that there are only two viable alternatives: Shut down Linux and do the backup from another LPAR or, Use a backup client that runs within Linux and therefore participates in its file system processing, getting all the current and correct data for the backup. Is that about it? The problem, as I see it, with backing up from another LPAR is that there is no incremental or differential backup capability. Nor is there any selective restore capability. Its an all-or-nothing backup/restore. Paul Noble Cuyahoga County Information Service Center >>> Rich Smrcina <[EMAIL PROTECTED]> 6/29/2007 10:20 AM >>> Well OK, maybe the analogy wasn't absolutely perfect. The point is on reboot Linux will think it crashed, Linux will attempt to rebuild it's filesystem, it may or may not work. Don't take the chance with your corporate data. Rob van der Heij wrote: > On 6/29/07, Rich Smrcina <[EMAIL PROTECTED]> wrote: > >> It's exactly like rebooting a Linux PC after some sort of crash, it goes >> through a filesystem check (fsck). > > There's a big difference. If the PC crashes you have a consistent > state as it was at that time. But when you have z/OS on the other end > copy the disk track by track, it is not consistent. > It's like the panoramic photo's in Google Streetview, composed of > multiple pictures taken short after each other from slightly different > location. A person walking by could show on adjacent pictures and > appear duplicate when you combine the pictures. > > If you use snapshot on the ESS, you do get a consistent copy. But then > you still may loose data. Even on a journaled file system because only > meta data is normally recovered. > > Rob > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or > visit > http://www.marist.edu/htbin/wlvindex?LINUX-390 > -- Rich Smrcina VM Assist, Inc. Phone: 414-491-6001 Ans Service: 360-715-2467 rich.smrcina at vmassist.com http://www.linkedin.com/in/richsmrcina Catch the WAVV! http://www.wavv.org WAVV 2008 - Chattanooga - April 18-22, 2008 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390 ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
