Linked by John Finigan on Mon 21st Apr 2008 19:00 UTC
Oracle and SUN When it comes to dealing with storage, Solaris 10 provides admins with more choices than any other operating system. Right out of the box, it offers two filesystems, two volume managers, an iscsi target and initiator, and, naturally, an NFS server. Add a couple of Sun packages and you have volume replication, a cluster filesystem, and a hierarchical storage manager. Trust your data to the still-in-development features found in OpenSolaris, and you can have a fibre channel target and an in-kernel CIFS server, among other things. True, some of these features can be found in any enterprise-ready UNIX OS. But Solaris 10 integrates all of them into one well-tested package. Editor's note: This is the first of our published submissions for the 2008 Article Contest.
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RE[5]: Comment by agrouf
by segedunum on Fri 25th Apr 2008 02:28 UTC in reply to "RE[4]: Comment by agrouf"
segedunum
Member since:
2005-07-06

LVM, DM, and MD are crap when you are working with large filesystems. On one 64-bit Debian Lenny box, I can't create multiple LVM volume if their total size goes over 1.2 TB. On a separate 64-bit Debian Etch box, I can create a single LVM volume that spans 7 TB, but creating a second one of 10 GB (yes GB) on the same box fails. On a third 64-bit Debian Etch box, I had to manually stitch together a bunch....

Your personal anecdotes on experiences with Linux storage management tools in a narrow set of circumstances count for very little. "Oh, this happened to me with LVM once!" I've created an absolute ton of multi gigabyte and terabyte logical volumes, and if what you described was the case generally then I think we'd have all heard about it. The very fact that you've mentioned 'Debian Lenny' sees your credibility get shot through the head right there.

Just because LVM does this or doesn't do that on a certain distribution, that doesn't mean that that is the way it works generally for everyone else. I daresay ZFS will have a few bugs and quirks once it gets more widely used, and if Sun actually gets a clue you might have an outside chance of finding the problem on their web site ;-).

I'd much rather see something useful in the server room. LVM, MD, and DM have a long way to go before that happens.

Well, they're used on a very, very, very wide basis these days, and I don't see people breaking down the doors and throwing out all their Linux boxes just to run ZFS. Just isn't happening.

I'm very tempted to turn our VM boxes into nothing more than NFS servers so that I can run FreeBSD or OpenSolaris on them and get some useful volume/fs management tools.

You'll do a cost/benefit analysis of that, like everyone else, and find out that it just isn't worth it. I don't know what you'd gain running FreeBSD, and the less-then-perfect userland in Solaris alone is enough to turn people off.

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