[linux-lvm] ReiserFS/XFS/JFS, LVM, Raid5
Brian Kress
kressb at icp.siemens.com
Mon Jun 26 15:01:46 UTC 2000
I have almost exactly this system. ( I don't have the
raid0 boot partition) Works great.
Jean-Eric Cuendet wrote:
>
> Hi,
> I'd like to build such a system:
> - Kernel + root on non-LVM Raid0/ext2 partition (no problemo)
This gets a little tricky. You need both disks BIOS
addressable (preferably hda and hdb or sda and sdb). You also
need a LILO that speaks Raid0. I think RH6.2 comes with one.
> A big partition (100Gb) which lokks like:
> - Raid5 (linux md)
> - LVM
> - filesystem
>
> It's a classic schema, but my question is:
> Does anyone already tried it?
/dev/md0 is a raid5 of /dev/hdb, /dev/hde, /dev/hdg, and
/dev/hdl. /dev/md0 is a PV for a VG that has 7 LVs in it. I
even have root in LVM. (this requires MD autodetect and
an initrd for LVM)
> Any success? failure? Drawback?
> Does XFS + LVM or JFS + LVM or ReiserFS + LVM be stable enough for
> production?
Currently you cannot put journaled filesystems on a software
raid I believe, because they use the buffer cache in incompatible
ways. If I am wrong, someone correct me. Ext2 (what I use) works
fine.
Raid 0.90 and LVM are both quite stable for production use.
> Do they all have resize tools?
Ext2 has one I think. I don't generally resize LVs.
If you'd like any help setting this up, let me know.
Brian Kress
kressb at icp.siemens.com
More information about the linux-lvm
mailing list