Re: A couple of... pearls?

1999-05-10 Thread Brian Leeper
On Sat, 24 Apr 1999, Andy Poling wrote: > Because you're _supposed_ to quiet the SCSI bus while you'ure swapping your > disk to prevent errors in active requests when you're removing or inserting > a device into the bus. I don't see why this couldn't be a function of the removeable drive brack

Re: A couple of... pearls?

1999-05-10 Thread Brian Leeper
On Sat, 24 Apr 1999, Francisco Jose Montilla wrote: > - Doesn't SCSI controllers use parity? (Although you have to > enable it, of course) Yes, every modern SCSI controller I've seen uses parity. But even more importantly--I think it's unlikely that something like a SCSI controller is g

Re: Swap on raid

1999-05-10 Thread Dietmar Stein
Hi I know what "swapoff -a" will do if there is data laying on the swap-partition; but the intention should be to have _NO_ processes (or whatever) being swapped out. At work we got much HP-Workstations and -Servers; everyone got a swap-partition which is of same size as physical memory (or even

Re: Swap on raid

1999-05-10 Thread A James Lewis
No matter how small the ammount of data in the swap partition, the system is likley to hang if it cannot be read... If you have swap, it must be raid if you don't want the machine to fail... but it's not all that much space... On Mon, 10 May 1999, Dietmar Stein wrote: > Hi > > I know what "sw

Re: Swap on raid

1999-05-10 Thread D. Lance Robinson
Hi, You can run a system without a swap device. But if you do 'swapoff -a' _after_ a swap device failure, you are dead (if swap had any virtual data stored in it.) 'swapoff -a' copies virtual data stored in the swap device to physical memory before closing the device. This is much different than

No Subject

1999-05-10 Thread Doug Greve
Hi All, I have a RAID 5 array with 8 IDE disks. Recently, it appears that one of the IDE controllers failed causing its two disks to become unavailable. When I fixed the controller, the two disks are visible, but the RAID claims they are out of synch (ie, time inconsistency --- see below). Have

Re: Problems with raidtools

1999-05-10 Thread Piete Brooks
> I am making several tests but I haven't found information about how I > can replace a broken disk. raidhotadd > - Then raid system boots in degraded mode and don't start the > reconstruction process. raidhotremove /dev/md0 /dev/hdd2# just to be tidy ... raidhotadd

Problems with raidtools

1999-05-10 Thread Juan Antonio GarcĂ­a Redondo
Hi. I've set up the raidtools ( RAID5) in my Linux PC and everything seems to be right. I am making several tests but I haven't found information about how I can replace a broken disk. The steps I am following are: - Unplug the drive /dev/hdd - Boot the system. Raid starts in degraded mod

quotacheck with -DEXT2_DIRECT broken with RAID

1999-05-10 Thread Malcolm Beattie
I have some systems using Red Hat 5.2 plus raid0145-19981215-2.0.36 with raidtools-19981214-0.90.tar.gz. On each I have six disks configured as a single RAID5 device and with an ext2 filesystem with 4K blocksize and -Rstride=16 (since the raid chunk-size is 64). On running quotacheck (from the qu