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#1 2008-02-21 12:46:20

vthinsel
Member
Registered: 2007-05-24
Posts: 41

Migrate from RAID1 + JBOD to standard (2 volumes)

Hello,

As of today, my dns-323 is configured as follow, with 2x500Gb HD:
(RAID1) Total Volume_1 space = 196576 MBytes, Used space = 118281 MBytes, Free space = 78294 MBytes
(JBOD) Total Volume_2 space = 589241 MBytes, Used space = 41430 MBytes, Free space = 547810 MBytes

So it is roughly 150 Gb of data for the moment. I also have a 250G hd available as temp space, just in case.

I would like to switch to non-RAID and just rsync every night volume1 to volume2 (data on vol2 doesn't need backup)

Would the following work 100%:

- create a tar for volume_1 (tar cvf)
- create a tar for volume_2 (tar cvf)
- transfer both tar files (FTP or SMB share) to external disk
- reformat everything (2 500Gb disks)
- install fun-plug
- restore first tar on Volume1
- restore second tar on Volume1
- setup rsync as describded in other topic

Would all rights be kept ? Any comments, ideas (rsync ?)

Thanks.
V.

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#2 2008-02-21 14:52:28

fonz
Member / Developer
From: Berlin
Registered: 2007-02-06
Posts: 1716
Website

Re: Migrate from RAID1 + JBOD to standard (2 volumes)

looks fine. tar preserves file permissions, symbolic links, device files, pipes, etc... It's pretty safe and reliable, overall. Actually, tar is the 'tape archiver' and made specifically for backup purposes.

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#3 2008-02-21 15:17:29

vthinsel
Member
Registered: 2007-05-24
Posts: 41

Re: Migrate from RAID1 + JBOD to standard (2 volumes)

Thanks for the confirmation fonz.
And yes, I'm a tar addict. When it comes to backup, I love dar from http://dar.linux.free.fr/ Could someone compile it ? Otherwise, rsync will be my solution.

Vincent.

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#4 2008-02-26 10:21:50

vthinsel
Member
Registered: 2007-05-24
Posts: 41

Re: Migrate from RAID1 + JBOD to standard (2 volumes)

So the process went fine. I just had an issue with reformating the drives. I finally took them away from the dns (by the way, X Craft external hd enclosure from cooler master is a real killer... 4 secs to swap drives in/out), removed all partitions and then inserted/formatted them one by one into the DNS.
Another small issue occured: first disk was shared through volume_2 and second disk was shared through volume_1. So it took me some time to understand that fun_plug should be sent to volume_2 ..... smile
rsync is currently syncing the data. takes some time the first time.

Thanks everyone !

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#5 2008-02-26 18:42:19

mig
Member
From: Seattle, WA
Registered: 2006-12-21
Posts: 532

Re: Migrate from RAID1 + JBOD to standard (2 volumes)

vthinsel - please read this thread
http://dns323.kood.org/forum/t1729-funp … on%29.html
about how the drives are initialized.


DNS-323 • 2x Seagate Barracuda ES 7200.10 ST3250620NS 250GB SATAII (3.0Gb/s) 7200RPM 16MB • RAID1 • FW1.03 • ext2 
Fonz's v0.3 fun_plug http://www.inreto.de/dns323/fun-plug

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#6 2008-02-26 19:05:16

vthinsel
Member
Registered: 2007-05-24
Posts: 41

Re: Migrate from RAID1 + JBOD to standard (2 volumes)

Thanks. I saw this post before. Just my feedback on my migration.

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