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[Fwd: Re: [linux-lvm] Progress on LVM2 snapshots]]





-------- Original-Nachricht --------
Betreff: Re: [linux-lvm] Progress on LVM2 snapshots]
Datum: Tue, 02 Aug 2005 10:39:47 +0200
Von: Hubert <hubgor poczta fm>
An: Klaus Strebel <klaus strebel gmx net>
Referenzen: <42EDD9A3 5060602 gmx net>

Hello Klaus ;-)

Could you ask Alasdair wich dm devel patches should be added with kernel
2.6.12-rc5 ?

I noticed that in this kerenel release are added many dm devel patches.

Best regards and many thanks ;-)

Have a nice day

Hubert

Klaus Strebel napisał(a):

FYI

-------- Original-Nachricht --------
Betreff: Re: [linux-lvm] Progress on LVM2 snapshots
Datum: Fri, 29 Jul 2005 21:47:57 +0100
Von: Alasdair G Kergon <agk redhat com>
Antwort an: LVM general discussion and development <linux-lvm redhat com>
An: LVM general discussion and development <linux-lvm redhat com>
Referenzen: <1119267914 21477 3 camel dilbert> <1122572640 9888 27 camel localhost localdomain>


On Thu, Jul 28, 2005 at 01:44:00PM -0400, Ming Zhang wrote:

1) very hard to solve technically. or
2) not so easy but doable, just no time and human resource?


The hardest part of the fix involves changing the sequence of
device-mapper ioctls that LVM2 uses, and that's a couple of weeks'
development work, now pencilled into the RHEL4 Update 3 timescale.

In the meantime, you can apply the snapshot patches in the -udm
tree and use 'dmsetup' manually to activate and deactivate snapshots
when lvm2 fails.

Patches 8 and 9 at:

ftp://sources.redhat.com/pub/dm/patches/2.6-unstable/2.6.12-rc2/2.6.12-rc2-udm1/

(Further patches are needed, but those two plus correct dmsetup use
should avoid machine lockups.)

Alasdair


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-- Mit freundlichen Grüssen / best regards

Klaus Strebel, Dipl.-Inform. (FH), mailto:klaus strebel gmx net

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