Re: [Veritas-bu] get back data from tape if fragment 1 deleted
On Mon, Apr 19, 2010 at 12:52:02PM -0400, Len Boyle wrote: I suspect that you still will not be able to read the tape with this version of tar as the being of the tar file would be missing. With a lot of work you might be able to use the tar source as a base to read the data and lay it down to disk. No experience with multiplexed, but gnutar (which is the base for the provided tar) has little problem picking up in the middle of a tar stream. You'll lose whatever file you're in, but should be able to detect the beginning of the next file and start extracting. -- Darren ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] get back data from tape if fragment 1 deleted
/usr/openv/netbackup/bin/tar -tMvb 128 -f /tmp/tapeid worked under NBU4.5 for listing the contains of a multiplexed backup this command is for a block size of 64K. Regards Michael 2010/4/19 Markus, Istvan istvan.mar...@hp.com NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
[Veritas-bu] get back data from tape if fragment 1 deleted
NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan smime.p7s Description: S/MIME cryptographic signature ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] get back data from tape if fragment 1 deleted
It is just a tar file. You could find the tape file # and position with mt and cat the file out. I have not tried to recover an incomplete tar file, but I am sure there are tools out there. On 4/19/2010 3:18 AM, Markus, Istvan wrote: NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] get back data from tape if fragment 1 deleted
Istvan, You may not be able to use tar to recover data from the tape. It depends on how the tapes were written. If they were multiplexed with multiple streams of data going to them tar generally cannot read this. If they were written as a single stream you most likely can recover data from the tape(s) using the mt command and options as David has pointed out. I've had instances where one tape failed to read or write in one drive but worked in another. If you have additional drives free you may try disabling the drive it failed on last time and let it try to read from another drive. Jeff On Mon, Apr 19, 2010 at 2:18 AM, Markus, Istvan istvan.mar...@hp.com wrote: NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan ___ Veritas-bu maillist - veritas...@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] get back data from tape if fragment 1 deleted
Netbackup supplies a modified copy of tar with the netbackup client. You can even download the source code from the netbckup support web site. The source changes include the support for multiplexed tapes. I suspect that you still will not be able to read the tape with this version of tar as the being of the tar file would be missing. With a lot of work you might be able to use the tar source as a base to read the data and lay it down to disk. len -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Jeff Cleverley Sent: Monday, April 19, 2010 12:37 PM To: Markus, Istvan Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] get back data from tape if fragment 1 deleted Istvan, You may not be able to use tar to recover data from the tape. It depends on how the tapes were written. If they were multiplexed with multiple streams of data going to them tar generally cannot read this. If they were written as a single stream you most likely can recover data from the tape(s) using the mt command and options as David has pointed out. I've had instances where one tape failed to read or write in one drive but worked in another. If you have additional drives free you may try disabling the drive it failed on last time and let it try to read from another drive. Jeff On Mon, Apr 19, 2010 at 2:18 AM, Markus, Istvan istvan.mar...@hp.com wrote: NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan ___ Veritas-bu maillist - veritas...@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] get back data from tape if fragment 1 deleted
I restored many multiplexed SDLT media last year for a legal project without issue using the procedure below. http://www.backupcentral.com/phpBB2/two-way-mirrors-of-external-mailing-lists-3/symantec-netbackup-18/can-backup-exec-read-netbackup-99718/ Regarding bad media and legacy tape drives I complete agree with Jeff. Restoring data using this method is more or less a crap shoot and anything you get is better than nothing. -Jonathan -Original Message- From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of Jeff Cleverley Sent: Monday, April 19, 2010 12:37 PM To: Markus, Istvan Cc: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] get back data from tape if fragment 1 deleted Istvan, You may not be able to use tar to recover data from the tape. It depends on how the tapes were written. If they were multiplexed with multiple streams of data going to them tar generally cannot read this. If they were written as a single stream you most likely can recover data from the tape(s) using the mt command and options as David has pointed out. I've had instances where one tape failed to read or write in one drive but worked in another. If you have additional drives free you may try disabling the drive it failed on last time and let it try to read from another drive. Jeff On Mon, Apr 19, 2010 at 2:18 AM, Markus, Istvan istvan.mar...@hp.com wrote: NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan ___ Veritas-bu maillist - veritas...@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu -- Jeff Cleverley Unix Systems Administrator 4380 Ziegler Road Fort Collins, Colorado 80525 970-288-4611 ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
Re: [Veritas-bu] get back data from tape if fragment 1 deleted
The unix utility dd can get a lot of stuff off of tapes. You just have to learn how to forward to each header and then tar stuff off. From: veritas-bu-boun...@mailman.eng.auburn.edu [mailto:veritas-bu-boun...@mailman.eng.auburn.edu] On Behalf Of David Stanaway Sent: Monday, April 19, 2010 7:20 AM To: veritas-bu@mailman.eng.auburn.edu Subject: Re: [Veritas-bu] get back data from tape if fragment 1 deleted It is just a tar file. You could find the tape file # and position with mt and cat the file out. I have not tried to recover an incomplete tar file, but I am sure there are tools out there. On 4/19/2010 3:18 AM, Markus, Istvan wrote: NetBackup 6.5: Phase 2 import stops as fragment 1 is no more available: INF - Skipping backup id (backup_id), there is no fragment 1 INF - Found no images matching the selection criteria that were ready for phase 2 import. Is there any way to get data from fragment 2? Any help would be much appreciated. Regards, Istvan ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu ___ Veritas-bu maillist - Veritas-bu@mailman.eng.auburn.edu http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
