I have a RAID-10 setup of four 400 GB HDDs. As the data grows by several
GBs a day, I want to migrate it somehow to RAID-5 on separate disks in a
separate machine.
Which would be easy, if I didn't have to do it online, without stopping
any services.
M1 - machine 1, RAID-10
M2 - machine 2,
Tomasz Chmielewski wrote:
I have a RAID-10 setup of four 400 GB HDDs. As the data grows by several
GBs a day, I want to migrate it somehow to RAID-5 on separate disks in a
separate machine.
Which would be easy, if I didn't have to do it online, without stopping
any services.
Your
Peter Rabbitson schrieb:
Tomasz Chmielewski wrote:
I have a RAID-10 setup of four 400 GB HDDs. As the data grows by several
GBs a day, I want to migrate it somehow to RAID-5 on separate disks in a
separate machine.
Which would be easy, if I didn't have to do it online, without stopping
any
On Tue, 15 May 2007, Tomasz Chmielewski wrote:
I have a RAID-10 setup of four 400 GB HDDs. As the data grows by several GBs
a day, I want to migrate it somehow to RAID-5 on separate disks in a separate
machine.
Which would be easy, if I didn't have to do it online, without stopping any
Tomasz Chmielewski wrote:
Peter Rabbitson schrieb:
Tomasz Chmielewski wrote:
I have a RAID-10 setup of four 400 GB HDDs. As the data grows by several
GBs a day, I want to migrate it somehow to RAID-5 on separate disks in a
separate machine.
Which would be easy, if I didn't have to do it
Gordon Henderson schrieb:
On Tue, 15 May 2007, Tomasz Chmielewski wrote:
I have a RAID-10 setup of four 400 GB HDDs. As the data grows by
several GBs a day, I want to migrate it somehow to RAID-5 on separate
disks in a separate machine.
Which would be easy, if I didn't have to do it online,
David Greaves schrieb:
(...)
So I want to synchronize /dev/LVM2/my-volume (ext3) with /dev/sdr (now
empty; bigger than /dev/LVM2/my-volume).
(sda2, sdb2, sdc2, sdd2) - RAID-10 - LVM-2 - my volume - ext3
I've not used iSCSI but I wonder about using nbd : network block device
Use nbd to
Bill Davidsen [EMAIL PROTECTED] writes:
Bernd Schubert wrote:
Yep, thats exactly what I'm talking about and its not only limited
to usb, but happens with sata as well.
And real SCSI hot plug drives if you pull the wrong one.
The right thing to do would be to change the raid superblock
On Tuesday May 15, [EMAIL PROTECTED] wrote:
Now, is there a way I can synchronize the contents of RAID-10, or
/dev/md10, with the contents of RAID-5, or /dev/sdr, when /dev/sdr is
bigger then /dev/md10, and /dev/md10 has to be synchronized on /dev/sdr,
not the way around (I would expand
Neil Brown schrieb:
(...)
You will want to test this of course - I cannot guarantee that I have
that command exactly right.
If the remote device fails (link breaks) it should get marked faulty
in the array. Once you have it working again you can use mdadm to
remove (--remove) and re-add
Neil Brown schrieb:
(...)
An external bitmap means that if the link goes down, it keeps track of
which blocks are in sync and which aren't, and when the link comes
back up you re-add the missing device and the rebuild continues where
it left off.
mdadm --build /dev/md22 --level=1
On Tuesday May 15, [EMAIL PROTECTED] wrote:
Neil Brown schrieb:
(...)
An external bitmap means that if the link goes down, it keeps track of
which blocks are in sync and which aren't, and when the link comes
back up you re-add the missing device and the rebuild continues where
it
On Tuesday May 15, [EMAIL PROTECTED] wrote:
Interesting lecture, thanks a lot. I'm gonna take that path.
:-)
I have one more question, though.
I want to migrate:
- from 4x400GB HDD RAID-10
- to 4x400GB HDD RAID-5
Obviously, I need 8 disks for that, but I have only 6.
So my idea
Neil Brown schrieb:
On Tuesday May 15, [EMAIL PROTECTED] wrote:
Neil Brown schrieb:
(...)
An external bitmap means that if the link goes down, it keeps track of
which blocks are in sync and which aren't, and when the link comes
back up you re-add the missing device and the rebuild continues
On Tue, May 15, 2007 at 11:27:16AM +0200, Tomasz Chmielewski wrote:
Peter Rabbitson schrieb:
Tomasz Chmielewski wrote:
I have a RAID-10 setup of four 400 GB HDDs. As the data grows by several
GBs a day, I want to migrate it somehow to RAID-5 on separate disks in a
separate machine.
Which
[Ingo, Neil, linux-raid added to CC]
On 16/05/07, Jeff Zheng [EMAIL PROTECTED] wrote:
Hi everyone:
We are experiencing problems with software raid0, with very
large disk arrays.
We are using two 3ware disk array controllers, each of them is connected
8 750GB harddrives. And we build a
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