The PV device is a MD device, RAID5 on several SATA disks。
Linux kernel is 2.6.29.
The SATA disks belong to a JBOD and the JBOD can be accessed by 2 controller(I use some methods to control multiple access).
The OS on both of the controllers are the same, but one will hang and the other did not, so I think there is not any bad sectors on the disks.
Maybe there is something wrong with the MD (soft raid) driver, I should to check more information.
> -----原始邮件-----
> 发件人: "Stuart D. Gathman" <stuart@bmsi.com>
> 发送时间: 2011年7月2日 星期六
> 收件人: "LVM general discussion and development" <linux-lvm@redhat.com>
> 抄送:
> 主题: Re: [linux-lvm] why 'lvcreate' command blocked?
>
> On Fri, 1 Jul 2011, Busby.Cheung wrote:
>
> > When I used the lvcreate cmd in my system, it blocked for a long
> > time. My OS kernel version is linux-2.6.29, is there any bug?
>
> There is a bug somewhere. Your block device is hanging. You don't
> mention what kind of block device and what driver are used for your
> PVs. It would only be an LVM problem if the block device was itself
> an LVM device. :-)
>
> For instance, if your block device is iSCSI, and the SAN server is
> down, or your block device is DRBD and the link is slow (has
> happened to me), or your block device is a disk that is frantically
> playing with bad sectors (has happened to me also), then LVM
> would "hang".
>
> --
> Stuart D. Gathman <stuart@bmsi.com>
> Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
> "Confutatis maledictis, flammis acribus addictis" - background song for
> a Microsoft sponsored "Where do you want to go from here?" commercial.
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 发件人: "Stuart D. Gathman" <stuart@bmsi.com>
> 发送时间: 2011年7月2日 星期六
> 收件人: "LVM general discussion and development" <linux-lvm@redhat.com>
> 抄送:
> 主题: Re: [linux-lvm] why 'lvcreate' command blocked?
>
> On Fri, 1 Jul 2011, Busby.Cheung wrote:
>
> > When I used the lvcreate cmd in my system, it blocked for a long
> > time. My OS kernel version is linux-2.6.29, is there any bug?
>
> There is a bug somewhere. Your block device is hanging. You don't
> mention what kind of block device and what driver are used for your
> PVs. It would only be an LVM problem if the block device was itself
> an LVM device. :-)
>
> For instance, if your block device is iSCSI, and the SAN server is
> down, or your block device is DRBD and the link is slow (has
> happened to me), or your block device is a disk that is frantically
> playing with bad sectors (has happened to me also), then LVM
> would "hang".
>
> --
> Stuart D. Gathman <stuart@bmsi.com>
> Business Management Systems Inc. Phone: 703 591-0911 Fax: 703 591-6154
> "Confutatis maledictis, flammis acribus addictis" - background song for
> a Microsoft sponsored "Where do you want to go from here?" commercial.
>
> _______________________________________________
> linux-lvm mailing list
> linux-lvm@redhat.com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
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