[linux] raid question

A. Mathes mathes at u.washington.edu
Wed May 7 17:31:48 PDT 2003


know why it's taken 24 hours on a 2xp3 933 1 Gb ram ... 3 120 Gb HD's? I
read somewhere about a min/max setting for reconstruction so it
wouldn't eat up other processes or something...
it's only going at 1229K/Sec ... and nothing else is running.

Andrew Mathes

On Wed, 7 May 2003, Mark L. Chang wrote:


> When you set it up initially, there isn't anything but crap on the three

> drives. It has to put them into a known consistent state, and that's the

> rebuild process. Looks just like when a drive horked.

>

> It takes some time. It took just under 2 hours on my Athlon 1GHz machine

> with 3x80gb 8mb cache drives at ATA-133.

>

> On Wed, May 07, 2003 at 05:11:45PM -0700 or thereabouts, A. Mathes wrote:

> > so, i set up a server this weekend using 3 hd's. It wouldn't boot off

> > RAID-5 for /boot partition, so, I ended up setting up /boot as RAID-1 and

> > / as RAID-5.

> > It seems like everything is going well, except when I cat /proc/mdstat:

> >

> > Personalities : [raid1] [raid5]

> > read_ahead 1024 sectors

> > md1 : active raid1 ide/host0/bus1/target0/lun0/part1[2]

> > ide/host0/bus0/target1/lun0/part1[1] ide/host0/bus0/target0/lun0/part1[0]

> > 96256 blocks [2/2] [UU]

> > resync=DELAYED

> > md2 : active raid5 ide/host0/bus1/target0/lun0/part3[2]

> > ide/host0/bus0/target1/lun0/part3[1] ide/host0/bus0/target0/lun0/part3[0]

> > 236010752 blocks level 5, 32k chunk, algorithm 3 [3/3] [UUU]

> > [=========>...........] resync = 47.6% (56217208/118005376)

> > finish=837.0min speed=1229K/sec

> > unused devices: <none>

> >

> > well, it's resyncing, to say the least. What's confusing me is I had

> > thought resync happened when a drive went down. But all 3 drives are

> > functional ... and I did the install to the raid itself. (mounted

> > /dev/md1 and md2 before install) So nothing ever should have been out of

> > sync.

> > Any help as to why it's resynching or as to why it's already taken 24

> > hours (and how to avoid this in the future) would be appreciated ...

> >

> > it's running gentoo

> >

> > Andrew Mathes

> >

>

> --

> "Streakers *repant* your end is in sight."

>





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