Re: [SLUG] HOT SWAPPING - back to the OP ;-)

2009-05-16 Thread Daniel Pittman
david writes: > Daniel Pittman wrote: >> david writes: >>> Daniel Pittman wrote: david writes: [...] >>> ChipDriver NCQ DMA++ hotplug PMP >>> ICH7 family ata_piix, ahci AHCIAHCIAHCIno >>> >>> Since I still don't want to fry the d

Re: [SLUG] HOT SWAPPING - back to the OP ;-)

2009-05-16 Thread david
Daniel Pittman wrote: david writes: Daniel Pittman wrote: david writes: (Admittedly, the last is only on really bad hardware, but hey, that hardware is out there and still within the reasonable life of machines for home users.) Anyway, once the hardware doesn't die completely you still ne

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Alex Samad
On Sun, May 17, 2009 at 11:04:33AM +1000, Grahame Kelly wrote: > > On 16/05/2009, at 5:53 PM, Adrian Chadd wrote: > >> On Sat, May 16, 2009, Grahame Kelly wrote: >> >>> Rather than stating what I suspect is just a "belief", have you look >>> at the Kernel source code at all? If so I would be very i

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Grahame Kelly
On 16/05/2009, at 5:53 PM, Adrian Chadd wrote: On Sat, May 16, 2009, Grahame Kelly wrote: Rather than stating what I suspect is just a "belief", have you look at the Kernel source code at all? If so I would be very interested at exactly where you state such activity happens. According to Linu

Re: [SLUG] LVM

2009-05-16 Thread Amos Shapira
2009/5/15 Steve Kowalik : > Daniel Bush wrote: >> That sounds fraught. >> Are you sure I can't just go with the alternate cd which will walk me thru >> lvm and still give me a desktop kernel/system? >> > > Indeed you can. You can even download the alternate CD with jigdo! Apparently yes, from goog

Re: [SLUG] hot swapping hard drives

2009-05-16 Thread Tony Sceats
On Sat, May 16, 2009 at 6:19 PM, Daniel Pittman wrote: > Tony Sceats writes: > >>> The CLI command "umount" does this within the Linux / Unix OS. > >> > >> That should have the filesystem flush data, but doesn't actually push > >> out dirty pages for the device — if you accessed it raw at any po

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Daniel Pittman
david writes: > Daniel Pittman wrote: >> david writes: > (Admittedly, the last is only on really bad hardware, but hey, that > hardware is out there and still within the reasonable life of machines > for home users.) > > Anyway, once the hardware doesn't die completely you sti

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread david
Daniel Pittman wrote: > david writes: (Admittedly, the last is only on really bad hardware, but hey, that hardware is out there and still within the reasonable life of machines for home users.) Anyway, once the hardware doesn't die completely you still need the drive

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Daniel Pittman
Adrian Chadd writes: > On Sat, May 16, 2009, Grahame Kelly wrote: [...] >> >FWIW, SATA devices are hot-swap and the are ... a little less than >> >8mm of coverage for those connections. Just sayin' >> >> SATA I, II and forthcoming III specifications originally covered hot- >> swapping. So it wo

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Daniel Pittman
Grahame Kelly writes: >> From: Daniel Pittman >> Grahame Kelly writes: [...] >> That only handles the hot *UN*-plug side of things, and can cause >> significant grief to you if the driver doesn't cope: anything from >> several minutes in which *all* disks on that controller are unavailable >>

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Daniel Pittman
david writes: >>> (Admittedly, the last is only on really bad hardware, but hey, that >>> hardware is out there and still within the reasonable life of machines >>> for home users.) >>> >>> Anyway, once the hardware doesn't die completely you still need the >>> driver stack to notice and remove th

Re: [SLUG] hot swapping hard drives

2009-05-16 Thread Daniel Pittman
Tony Sceats writes: >>> The CLI command "umount" does this within the Linux / Unix OS. >> >> That should have the filesystem flush data, but doesn't actually push >> out dirty pages for the device — if you accessed it raw at any point >> this will not be sufficient. >> >> (Also, lower layers such

Re: lshal, gnome-device-manager, was Re: [SLUG] hot swapping hard drives

2009-05-16 Thread Jeff Waugh
> lshal is PERFECT and I didn't know it existed. Much nicer than the gnome > version. Having said that, why did Ubuntu take it out? Given that it is only a diagnostic tool and serves no other purpose (and we have lshal anyway), it lost out during one of the difficult "we have two days until rele

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread david
>> (Admittedly, the last is only on really bad hardware, but hey, that >> hardware is out there and still within the reasonable life of machines >> for home users.) >> >> Anyway, once the hardware doesn't die completely you still need the >> driver stack to notice and remove the now absent hardwa

Re: [SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Adrian Chadd
On Sat, May 16, 2009, Grahame Kelly wrote: > Rather than stating what I suspect is just a "belief", have you look > at the Kernel source code at all? If so I would be very interested at > exactly where you state such activity happens. > According to Linux Internals Doco (and hereijn I refer to

lshal, gnome-device-manager, was Re: [SLUG] hot swapping hard drives

2009-05-16 Thread david
Thanks Jeremy, lshal is PERFECT and I didn't know it existed. Much nicer than the gnome version. Having said that, why did Ubuntu take it out? I now know that I have an 82801GB/GR/GH (ICH7 Family) SATA IDE Controller which may help with the original question ;-) David Jeremy Visser wrote:

[SLUG] HOT SWAPPING - "Internals of the sync/umount call"

2009-05-16 Thread Grahame Kelly
On 16/05/2009, at 4:32 PM, slug-requ...@slug.org.au wrote: From: Daniel Pittman Date: 16 May 2009 4:31:34 PM To: slug@slug.org.au Subject: Re: [SLUG] hot swapping hard drives Grahame Kelly writes: Of the seven systems I look after, three have hot-swapping HDA's via a RAID5/6 drive enclos