![]() I add a 4th drive, LIVE, while the filesystem is still up and running and then notice it in the syslog:Īta6: SATA link up 1.5 Gbps (SStatus 113 SControl 310) I started with 3 drives, 500gb each and made a 1tb raid pack from those 3. then threw in some drives to create an initial drive pack. I took a linux box, used any old drive connections I had (but I did use good ones pci-express sata2 ports). You don't need LVM (logical volume stuff) to have online capacity expansion on raid5! Online (always available) cap expansion in raid5 would be a REALLY nice thing to have, don't you agree? especially if its free? In my application, I don't want hardware raid cards (I have a few of those already for other things) - but I'm really curious if a software-only raid system (for SAMBA windows shares) can be built for the cost of spare parts and some time to configure it. (I was just not able to keep LVM running between reboots yet and was not able to grow that raid pack, live). I can pick any/all disk interfaces on my box and add their ports to the soup for a grand RAID dinner I added a mix of sata and even old IDE, created a raid5 group and it worked just fine. Software raid5 is working fine and gives some nice flexibility. anyone done this successfully? I've read that it can be made to work but its just not working for me, yet. I'm not yet successful in raid5 growing, live, yet. if you need to grow your filesystem (the Big Thing(tm) these days) you have to first grow the raid device, then grow the logical LVM layer above it, THEN finally resize the filesystem (ext3, xfs, jfs, whatever). It seems the idea is that the raid device is the physical thing and that LVM should sit on top of that (it has its own startup and subsystem and conf files to worry about, too). It seems (from reading up) that the preferred method for doing software raid - WITH the ability to do online capacity expansion - is to layer LVM2 on top of the MD (multiple devices aka RAID) device? Actually, I'm more thinking of what 'lvm' or logical volume manager' is like to live with.
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