pv unavailable

ysping

syslog：
vmunix:LVM:VG 0x020000:Lost quorum.
vmunix: This may block configuration changes and I/Os. In order to reestablish quorum at least
1 of the following PVs (represented by current link) must become available:
Oct 21 12:55:29 bak vmunix: SCSI: Read error -- dev: b 31 0x040500, errno: 11, resid: 8192,
Oct 21 12:55:29 bak vmunix: <31 0x040500>
Oct 21 12:55:29 bak vmunix:  blkno: 122594776, sectno: 0, offset: 125537050624, bcount: 8192.

大家看看是什么原因？

[ 本帖最后由 ysping 于 2008-10-21 13:28 编辑 ]

nlsdkd960030

盘有问题的可能性多一点.ioscan,vgdisplay看一下.