Just reread your post again....
Actually, "cat /proc/partitions", if the said partitions/disks are still being seen by kernel, you will need some sort of system scan to get rid of them, or a reboot.
I have a SAN, and qlogic card as HBA, qlogic has a tool for scanning for non-existent partitions and remove them...
http://filedownloads.qlogic.com/files/ms/56615/readme_dynamic_lun_22.html
and with qlogic, I could have removed the non-existent LUNs via the option refresh:
-r, --refresh
To refresh, that is remove LUNs that are lost
use the options "-r|--refresh". This will
remove the LUNs which no more exist.
How were these disks attached to your system?
----- Original Message -----
From: Philippe Naudin <philippe.naudin@xxxxxxxxxxxxxxx>
To: CentOS mailing list <centos@xxxxxxxxxx>
Cc:
Sent: Friday, October 28, 2011 9:26 AM
Subject: Re: read failed after messages of non existing harddisks
Le ven 28 oct 2011 14:08:50 CEST, Götz Reinicke a écrit:
> Hi,
>
> some time ago I removed some physical disks from a server and now I'm
> still getting dmesg messages like:
>
> sd 0:2:2:0: SCSI error: return code = 0x00040001
> end_request: I/O error, dev sdc, sector 0
>
> And all lvm tools still grumbel about that disks too:
>
> /dev/sdb: read failed after 0 of 4096 at 0: Eingabe-/Ausgabefehler
> /dev/sdb: read failed after 0 of 4096 at 1746969493504:
> Eingabe-/Ausgabefehler
>
>
> How may I tell the lvm and the system, that it is ok that this disk do
> not exist any more?
If a software RAID has been removed, don't forget :
mdadm --misc --zero-superblock /dev/sdX
where sdX is every disk that was part of the RAID.
--
Philippe Naudin
UMR MISTEA : Mathématiques, Informatique et STatistique pour
l'Environnement et l'Agronomie
INRA, bâtiment 29 - 2 place Viala - 34060 Montpellier cedex 2
tél: 04.99.61.26.34, fax: 04.99.61.29.03, mél: naudin@xxxxxxxxxxxxxxx
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