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Hello, sorry it took me so long to reply. On Tue, 12 Apr 2011, Per Jessen wrote:
David Haller wrote:
On Tue, 12 Apr 2011, Dave Howorth wrote:
David Haller wrote:
Let's say I'd use LVM, what if e.g. /dev/sde shows defects (seen in the SMART data). Can LVM show me what dirs and files(!) I have on the PV(s) on that probably soon-failing drive?
Doesn't matter because in the sane world you're now running LVM over a RAID, right? So the RAID tells you it's replaced /dev/sde with the hot spare and the rebuild is in progress. End of story. :-P
Ok, now, how'd you contruct a raid over my discs? And note that so many having 2T size is purely coincidental, due to the fact that available and sanely prices sizes (compared to 2T) have stalled there for over a year! 18 months ago, I had about 2 of each of 500G, 750G, 1000G, 1500G, 2000G or so. Now, how do you make a sane (Linux Software-)RAID (Levels 5 or 6), over _those_ drives?
I would probably make a number of RAID1 arrays of equal-size disks, then use LVM for managing the space.
RAID1 as underlying RAID-Level would be to wasteful for my data. RAID5 would be nice if I could span volumes sanely across my (often changing) disks ...
If I needed RAID6, I would have to do with the smallest disk-size, but otherwise I don't see a problem.
So, what'd you make out of: [0:0:0:0] disk ATA SAMSUNG HD501LJ CR10 /dev/sda # .5T [1:0:0:0] disk ATA SAMSUNG HD204UI 1AQ1 /dev/sdb # 2T [2:0:0:0] disk ATA ST31500341AS CC1H /dev/sdc # 1.5T [3:0:0:0] disk ATA SAMSUNG HD203WI 1AN1 /dev/sdd # 2T [4:0:0:0] disk ATA SAMSUNG HD203WI 1AN1 /dev/sde # 2T [5:0:0:0] disk ATA SAMSUNG HD203WI 1AN1 /dev/sdf # 2T [8:0:0:0] disk ATA SAMSUNG HD204UI 1AQ1 /dev/sdg # 2T [9:0:0:0] disk ATA SAMSUNG HD204UI 1AQ1 /dev/sdh # 2Y [16:0:1:0] disk ATA WDC WD5000AVJB-6 05.0 /dev/sdi # .5T and that's rather recently, until a few months ago that was a merry mix of .5T, .75T, 1T, 1.5T and 2T ... Oh, and only /dev/sda (current system disk for a SUSE and a Gentoo), /dev/sdb (newest disk, prepped for 2 system-roots w/o home[1] to replace sda sometime), and /dev/sdg (one "home2" partition for basically replacable "home" stuff, one "data" partition). The rest is data partitions (one each disk). Oh, and expect disks being replaced by e.g. 3T drives soonish. -dnh PS: ask if you need help configuring freedos for running the Samsung FW-Update-Tool F4EG.exe for the HD204UI ... (I needed it only for 2 of those 3 disks, sda already came with the updated firmware). [1] lately I tend to use only / and /home partitions. -- Kiss me twice. I'm schizophrenic. -- from the BSD fortune file -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org For additional commands, e-mail: opensuse+help@opensuse.org