On Sat, Jan 01, 2000 at 07:29:54PM +, Lyndon David wrote:
> There has been much talk of problems with swapping on raid.
>
> As I understand it swapping on raid is fine unless the array is reconstructing.
yes
> Is this true ? If so then I can get around this problem with an appropriate
>ope
Part of the problem you may be seeing is SCSI itself.
You pull an active SCSI data cable on a non-hot swappable controller/drive
and the controller will hang the SCSI and CPU busses the next time it
accesses the controller.
At 03:42 PM 1/1/2000 -0500, you wrote:
>the linux kernel stripes swap
the linux kernel stripes swap writes across multiple swap partitions of the
same priority. striping (effectively raid0) provides NO reliability in case of
disk failure. this is what the original poster was asking about.
to aswer the original question, i have twice tried to make swap on raid1,
whi
: There has been much talk of problems with swapping on raid.
:
: As I understand it swapping on raid is fine unless the array
: is reconstructing.
[snip]
I was under the impression that the current Linux
swapping code automatically distributed (RAID-0
style) across all available swap partitio
Louis Mandelstam wrote:
>
> On Tue, 12 Jan 1999, M.H.VanLeeuwen wrote:
>
> > #swapoff -a
> > #dd if=/dev/zero of=swapfile bs=1k count=1
> > #mkswap swapfile
> > #losetup /dev/loop3 swapfile
> > #swapon /dev/loop3
> > #free
> > total used free sharedbuffers
On Tue, 12 Jan 1999, M.H.VanLeeuwen wrote:
> #swapoff -a
> #dd if=/dev/zero of=swapfile bs=1k count=1
> #mkswap swapfile
> #losetup /dev/loop3 swapfile
> #swapon /dev/loop3
> #free
> total used free sharedbuffers cached
> Mem:144044 141608
Quoth Louis Mandelstam.
>
>On Wed, 13 Jan 1999, Russell Brown wrote:
>
>> >Reasons TO USE RAID for swap - if the darn swap partition goes bad,
>>
>> Except that the lower level SCSI drivers* seem to croak when a disk goes
>> bad and lockup the system anyway :-(
>> * - aic7xxx in my case.
>
>I
On Wed, 13 Jan 1999, Russell Brown wrote:
> >Reasons TO USE RAID for swap - if the darn swap partition goes bad,
> >the kernel chokes. With a raid swap partition, a bad disk will not
> >bring down the system. Guess how I found out!!!
>
> Except that the lower level SCSI drivers* seem to croak wh
On Tue, 12 Jan 1999, Michael wrote:
> Reasons TO USE RAID for swap - if the darn swap partition goes bad,
> the kernel chokes. With a raid swap partition, a bad disk will not
> bring down the system. Guess how I found out!!!
>
> Am I missing something here?? The system in question had 2 swap
>
Quoth Michael.
>
>> On Tue, 12 Jan 1999, Bohumil Chalupa wrote:
>>
>> > IMHO there's no reason for using raid0 (striped) partition for swap.
>> > If you use two swap partitions with equal priority, the kernel does
>> > the striping automatically.
>
>Reasons TO USE RAID for swap - if the darn
> On Tue, 12 Jan 1999, Bohumil Chalupa wrote:
>
> > IMHO there's no reason for using raid0 (striped) partition for swap.
> > If you use two swap partitions with equal priority, the kernel does
> > the striping automatically.
> >
> > Another reason why NOT to use ANY RAID device for swap is that
here is what i've tried on 2.0.36 on a raid 5 file system to
show it can be done, but I don't normally run this way because
of comments about locking up if resources are unavailable
#swapoff -a
#dd if=/dev/zero of=swapfile bs=1k count=1
#mkswap swapfile
#losetup /dev/loop3 swapfile
#swapon /d
On Tue, 12 Jan 1999, Bruno Prior wrote:
> Haven't tried it myself, but I've had two different reports that swap on RAID-1
> works, from people who didn't realise that it _shouldn't_ work. I encouraged them to
> post their experiences to the list, but I don't think either of them did. Could it be
> In fact it's quite simple: the md device doesn't currently support swap
> partitions (or swapping to files on an md device).
Haven't tried it myself, but I've had two different reports that swap on RAID-1
works, from people who didn't realise that it _shouldn't_ work. I encouraged them to
post
On Tue, 12 Jan 1999, MOLNAR Ingo wrote:
> > In fact it's quite simple: the md device doesn't currently support swap
> > partitions (or swapping to files on an md device).
>
> it's quite simple: it should work just fine, if not then it's a bug. (i've
> tested it and it works, but YMMV, bug repo
On Tue, 12 Jan 1999, Louis Mandelstam wrote:
> In fact it's quite simple: the md device doesn't currently support swap
> partitions (or swapping to files on an md device).
it's quite simple: it should work just fine, if not then it's a bug. (i've
tested it and it works, but YMMV, bug reports
On Tue, 12 Jan 1999, Bohumil Chalupa wrote:
> IMHO there's no reason for using raid0 (striped) partition for swap.
> If you use two swap partitions with equal priority, the kernel does
> the striping automatically.
>
> Another reason why NOT to use ANY RAID device for swap is that
> it may allo
17 matches
Mail list logo
