6 ms·

The announcement doesn't state what DRBD is. It turns out that it is effectively RAID-1 running over the network. It looks fairly impressive and will make setti

by sgk284 17y ago

The announcement doesn't state what DRBD is. It turns out that it is effectively RAID-1 running over the network. It looks fairly impressive and will make setting up mirrored servers easy as cake. Personally though I'd like to see networked RAID-0 support in the kernel. It'd be neat just throwing a bunch of machines on a network and have them all act like a giant disk.

mseebach 17y ago
> Personally though I'd like to see networked RAID-0 support in the kernel No, I don't think you would. File systems won't play well with arbitrarily large drives. You probably want a distributed file system, something like AFS, and it's already in there. http://en.wikipedia.org/wiki/Andrew_File_System http://en.wikipedia.org/wiki/Andrew_File_System
thwarted 17y ago
You can effectively do that now with NBD and md.
pmorici 17y ago
"I'd like to see networked RAID-0 support in the kernel" Isn't that what iSCSI is for?
cschep 17y ago
easy as pie. or piece of cake. you pick. :)
- nex3 17y ago
  The idioms you're familiar with and the idioms the parent is familiar with may not be identical. I've heard "easy as cake" used reasonably widely.
josephruscio 17y ago
Distributed Replicated Block Device (http://www.drbd.org/ http://www.drbd.org/) can be used in conjunction with something like Linux HA (http://www.linux-ha.org/ http://www.linux-ha.org/) to create a systematic high availability clustering approach for stateful (and transactional) applications such as a database. Lots of sites use it (e.g. github.com IIRC) and up until now, you've had to run a patched kernel to take advantage of it.
wendroid 17y ago
Use AoE and you can have whatever raiding system you want.
tristan_juricek 17y ago
See Phillip's response for a bit more explanation in the mail thread: http://marc.info/?l=linux-kernel&m=125309001007725&w=2 http://marc.info/?l=linux-kernel&m=125309001007725&w... At my (soon-to-be-last) company, emarsys, Linbit maintained our production clusters. We had a couple of Postgres servers and main file storage replicated across physical locations - a customer requirement, actually, that the system be capable of handling something like a fire at one of the data centers. Overall, it worked well. In the 2.5 years I was there, the only time I needed a backup was to restore my own mistake. :) I'd check it out if you're looking for a more complete replication system (Again, not RAID.)

by sgk284 17y ago

mseebach 17y ago

> Personally though I'd like to see networked RAID-0 support in the kernel No, I don't think you would. File systems won't play well with arbitrarily large drives. You probably want a distributed file system, something like AFS, and it's already in there. http://en.wikipedia.org/wiki/Andrew_File_System http://en.wikipedia.org/wiki/Andrew_File_System

thwarted 17y ago

You can effectively do that now with NBD and md.

pmorici 17y ago

"I'd like to see networked RAID-0 support in the kernel" Isn't that what iSCSI is for?

cschep 17y ago

easy as pie. or piece of cake. you pick. :)

nex3 17y ago
The idioms you're familiar with and the idioms the parent is familiar with may not be identical. I've heard "easy as cake" used reasonably widely.

josephruscio 17y ago

Distributed Replicated Block Device (http://www.drbd.org/ http://www.drbd.org/) can be used in conjunction with something like Linux HA (http://www.linux-ha.org/ http://www.linux-ha.org/) to create a systematic high availability clustering approach for stateful (and transactional) applications such as a database. Lots of sites use it (e.g. github.com IIRC) and up until now, you've had to run a patched kernel to take advantage of it.

wendroid 17y ago

Use AoE and you can have whatever raiding system you want.

tristan_juricek 17y ago

See Phillip's response for a bit more explanation in the mail thread: http://marc.info/?l=linux-kernel&m=125309001007725&w=2 http://marc.info/?l=linux-kernel&m=125309001007725&w... At my (soon-to-be-last) company, emarsys, Linbit maintained our production clusters. We had a couple of Postgres servers and main file storage replicated across physical locations - a customer requirement, actually, that the system be capable of handling something like a fire at one of the data centers. Overall, it worked well. In the 2.5 years I was there, the only time I needed a backup was to restore my own mistake. :) I'd check it out if you're looking for a more complete replication system (Again, not RAID.)