Talk:How to hotswap Ultrabay devices

I recently tried using the libata-tj patch tarball for 2.6.16.16, applying this against the newly released 2.6.16.18 kernel (released today.) Patch applied cleanly. Upon boot, I immediately get a multitude of "weird" errors -- strange lockups, programs segmentation fault (running "top" resulted in a seg fault), and ultimately a hard lockup.

I booted back to my vanilla 2.6.16.16, ran fsck (appeared to just replay a few transactions, no major damage), and am back to normal. However, it successfully scared me off - unfortunately can't risk too much downtime (or worse, subtle fs corruption) right now on my main system. Anybody have experiences with this on a T43p using piix driver?

--gsmenden 00:00, 23 May 2006 (EST)

---

The 2.6.16.16 patch works fine on my T43. There's a git tree (mentioned on the patch's webpage) which is closer to 2.6.18, but AFAIK no simple unified patch was prepred.

--Thinker 08:37, 23 May 2006 (CEST)

---

Cool. If I get brave I'll try it again on the 43p against 2.6.16.16 proper and report back.

--gsmenden 15:29, 23 May 2006 (EST)

---

Works fine here on 2.6.16. I got only one crash with Suspend to Ram, which I'm unable to reproduce yet. I renamed the acpi event files because at least my acpid doesn't read files that ends with .conf

--Defiant 21:09, 28 May 2006 (CEST)

---

Update - patched against 2.6.16.19, works fine. It appears my previous problems were due to a disk error unrelated to the patch. Excellent!

--gsmenden 00:57, 31 May 2006 (EST)

Anybody have time to make a patch of the libata(-tj) .git tree against the recently released 2.6.17? I hope to make one in the future if not...

--gsmenden 22:08, 19 Jun 2006 (EST)

one nit about ultrabay_close script / patch against 2.6.17 available

Howdy,

In ultrabay_close, there is 'sleep 3' for disk spinup, which isn't necessary. libata itself waits for disk spinup and if something breaks (e.g. first reset fails w/ timeout or something), it's libata's fault. Please remove that line and see if anything breaks.

Also, I've uploaded patch against 2.6.17/2.6.17.1 today.

http://home-tj.org/files/libata-tj-stable/libata-tj-2.6.17-20060625-1.tar.bz2

Hmmm... My post looks different from others. This wasn't intentional. Just don't know how to add normal discussion entry. Sorry.

--tj

---

Right, it works fine without "sleep 3" using the new patches. Sleep removed.

--Thinker 12:35, 1 July 2006 (CEST)

---

Is it correct, that the ata_piix driver in kernel 2.6.18 RC4 now supports hot swapping like described in the howto and announced here http://lwn.net/Articles/183734/?

--cob 15:53, 23 August 2006