Hello. I have some strange phenomenoma after I tried to detach and afterwards reattach a block-device to a domU. The problems occured after some problems with the underlying iscsi device that is accessed in dom0 and via Xen attached to the domU. I played around with "xm block-detach" "xm block-attach" and now I have the following situation: xm block-list gives me this output: [root@dom0]# xm block-list 19 Vdev BE handle state evt-ch ring-ref BE-path 2050 0 0 4 52 8 /local/domain/0/backend/vbd/19/2050 2053 0 0 4 53 9 /local/domain/0/backend/vbd/19/2053 2054 0 0 4 54 10 /local/domain/0/backend/vbd/19/2054 2055 0 0 4 55 11 /local/domain/0/backend/vbd/19/2055 2056 0 0 4 56 12 /local/domain/0/backend/vbd/19/2056 2057 0 0 4 57 13 /local/domain/0/backend/vbd/19/2057 2065 0 0 4 58 14 /local/domain/0/backend/vbd/19/2065 2066 0 0 4 59 15 /local/domain/0/backend/vbd/19/2066 2081 0 0 4 60 16 /local/domain/0/backend/vbd/19/2081 2145 0 0 4 62 18 /local/domain/0/backend/vbd/19/2145 2161 0 0 4 63 19 /local/domain/0/backend/vbd/19/2161 2177 0 0 4 64 20 /local/domain/0/backend/vbd/19/2177 2128 0 0 1 -1 -1 /local/domain/0/backend/vbd/19/2128 2129 0 0 1 -1 -1 /local/domain/0/backend/vbd/19/2129 2193 0 0 1 -1 -1 /local/domain/0/backend/vbd/19/2193 2209 0 0 1 -1 -1 /local/domain/0/backend/vbd/19/2209 2225 0 0 1 -1 -1 /local/domain/0/backend/vbd/19/2225 [root@dom0]# The entries with "evt-ch" and "ring-ref" = "-1" are the entries belonging to the corresponding device. xenstore-ls gives e.g.: [root@dom0]# xenstore-ls /local/domain/0/backend/vbd/19/2225 domain = "domU" frontend = "/local/domain/19/device/vbd/2225" format = "raw" dev = "sdl1" state = "2" params = "/dev/sdi1" mode = "w" online = "1" frontend-id = "19" type = "phy" physical-device = "8:81" hotplug-status = "connected" [root@dom0]# "xm block-detach 19 2225" gives no output and has no visible effect. With the --force options it says: [root@dom0]# xm block-detach 19 2225 -f Error: Device 2225 not connected Usage: xm block-detach <Domain> <DevId> [-f|--force] Destroy a domain''s virtual block device. [root@dom0]# xend log the following during this operation: [2009-07-03 13:55:11 xend.XendDomainInfo 1194] DEBUG (XendDomainInfo:1235) Check ingif ''vbd'' device 2225 is really a''tap'' device Btw: I cannot see this block device in the domU. Another strange thing: "xm list" does not show this domU anymore! In xend.log it says: [2009-07-03 13:58:46 xend 1194] WARNING (XMLRPCServer:66) Failed to query SXPR for domain <domain id=19 name=domU memory=23000> In "xm top" it is still there and running. Anybody having some ideas how to fix this? Thanks a lot, Ralf _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users