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Progress on LVM2 snapshots]]

Fwd: Re: Klaus Strebel 1 participant 1 message Aug 2, 2005

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-------- Original-Nachricht --------
Betreff: Re: [linux-lvm] Progress on LVM2 snapshots]
Datum: Tue, 02 Aug 2005 10:39:47 +0200
Von: Hubert <[email protected]>
An: Klaus Strebel <[email protected]>
Referenzen: <[email protected]>

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 napisa�(a):

Quoted 24 lines

FYI

-------- Original-Nachricht --------
Betreff: Re: [linux-lvm] Progress on LVM2 snapshots
Datum: Fri, 29 Jul 2005 21:47:57 +0100
Von: Alasdair G Kergon <[email protected]>
Antwort an: LVM general discussion and development <[email protected]>
An: LVM general discussion and development <[email protected]>
Referenzen: <1119267914.21477.3.camel@dilbert> <[email protected]>

Quoted 2 lines · Ming Zhang

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.

Quoted 8 lines

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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Signature · 8 lines
Mit freundlichen Gr�ssen / best regards

Klaus Strebel, Dipl.-Inform. (FH), mailto:[email protected]

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