I can't answer that specific question I'm afraid, would have to defer to the
more knowledgable, however I would have thought there'd be a way it can get
updated, and at least you'd have a safe copy of the data anyway should that
drive go entirely.
Booting a live/rescue cd with more updated resilvering code as others have
suggested would be the next best step - if that works, fine, if not, at least
you have a copy of the raw data.
Either way it's in the realms of data recovery territory and the usual caveats
apply (double/triple check source/destinations/everything you type etc, be
prepared for it to not work)!
-----Original Message-----
From: Udo Grabowski (IMK) <udo.grabow...@kit.edu>
Sent: 08 July 2024 17:11
To: discuss@lists.illumos.org
Subject: Re: [discuss] Disk resilvering problem
On 08/07/2024 13:36, Keith Hall via illumos-discuss wrote:
> Can you use ddrescue to copy the data off the "unhealthy third disk" to
> another good 'donor' drive, that can then be used for the resilvering process
> without the timeouts problem (assuming timeouts are drive not
> controller/cable related)?
>
> ddrescue will continue after retry with all uncopied data, not copying stuff
> already copied.
>
Startet that, but the question here is how to reinsert the disk copy into the
pool, since the devices are recorded in the (checksum protected) label. Will
zpool export/zpool import fix that when the defect disk is pulled and the donor
has the wrong path/phys_path/devid/fru (compared to the copied label) ?
# zdb -l /dev/dsk/c0t5000CCA2441F3258d0s0 #(donor disk) ....
children[0]:
type: 'spare'
id: 0
guid: 14397730801213461149
whole_disk: 0
create_txg: 4
children[0]:
type: 'disk'
id: 0
guid: 4559381366945349747
path: '/dev/dsk/c0t5000CCA2441ED19Cd0s0'
devid: 'id1,sd@n5000cca2441ed19c/a'
phys_path: '/scsi_vhci/disk@g5000cca2441ed19c:a'
fru:
'hc://:product-id=DataON-CIB-9470V2-E0:server-id=:chassis-id=500a0d10000eee3f:serial=N8GJYE7Y:part=HGST-HUS726040AL5210:revision=A907/ses-enclosure=0/bay=0/disk=0'
whole_disk: 1
DTL: 109
create_txg: 4
....
--
Dr.Udo Grabowski Inst.of Meteorology & Climate Research IMK-ASF-SAT
https://www.imk-asf.kit.edu/english/sat.php
KIT - Karlsruhe Institute of Technology https://www.kit.edu
Postfach 3640,76021 Karlsruhe,Germany T:(+49)721 608-26026 F:-926026
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