You're right, it seems DM multipath-feature related. Going from queue_if_no_path to fail_if_no_path make it disappear. Sorry for the noise. Selon James.Smart@xxxxxxxxxx: > Nothing in the oops looks recognizable, at least relative to the issues we > had tracked down via the block/unblock (cable pull) patches. > > -- james > > > -----Original Message----- > > From: christophe.varoqui@xxxxxxx [mailto:christophe.varoqui@xxxxxxx] > > Sent: Friday, December 10, 2004 3:16 AM > > To: dm-devel@xxxxxxxxxx > > Cc: Smart, James > > Subject: multipath oops > > > > > > pour reference, here is the oops I mentionned earlier, happening when > > portdisabling on a brocade switch during streaming read on a > > multipath map : > > > > (kernel 2.6.10-rc1-udm2) > > > > SCSI error : <2 0 2 3> return code = 0x10000 > > SCSI error : <2 0 2 3> return code = 0x10000 > > SCSI error : <2 0 2 3> return code = 0x10000 > > SCSI error : <2 0 2 2> return code = 0x10000 > > SCSI error : <2 0 2 2> return code = 0x10000 > > SCSI error : <2 0 2 2> return code = 0x10000 > > device-mapper: dm-multipath: error getting device > > device-mapper: error adding target to table > > Device sde not ready. > > end_request: I/O error, dev sde, sector 4493616 > > Device sdb not ready. > > end_request: I/O error, dev sdb, sector 4493616 > > Unable to handle kernel paging request at ffffff000005e1b7 RIP: > > [<ffffff000005e1b7>] > > PML4 3c6063 PGD fbb07067 PMD fbb06067 PTE 80000000cc144163 > > Oops: 0011 [1] SMP > > CPU 1 > > Modules linked in: dm_round_robin af_packet iscsi_sfnet ipv6 > > smbfs lpfc > > scsi_transport_fc i2c_amd756 i2c_core hw_random amd74xx evdev > > ohci_hcd tg3 > > ide_generic ide_cd ide_core cdrom ext3 jbd mbcache sd_mod > > dm_multipath dm_mod > > mptscsih scsi_mod mptbase unix > > Pid: 7, comm: events/1 Not tainted 2.6.10-rc1 > > RIP: 0010:[<ffffff000005e1b7>] [<ffffff000005e1b7>] > > RSP: 0018:0000010004f8de60 EFLAGS: 00010247 > > RAX: ffffff000005e1af RBX: 00000100f8899a78 RCX: 0000010004f8ded0 > > RDX: ffffff000005e1b1 RSI: 0000000000000212 RDI: 00000100f8899a00 > > RBP: 00000100f8899a80 R08: 0000010004f8c000 R09: 0000000000000003 > > R10: 0000000000000000 R11: 0000000000000000 R12: 0000010004f64880 > > R13: 0000000000000212 R14: 00000100f8899a00 R15: ffffff000005e1b7 > > FS: 0000000040037970(0000) GS:ffffffff803b9500(0000) > > knlGS:0000000000000000 > > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > > CR2: ffffff000005e1b7 CR3: 0000000004dfa000 CR4: 00000000000006e0 > > Process events/1 (pid: 7, threadinfo 0000010004f8c000, task > > 00000100fba32070) > > Stack: ffffffff80143548 0000010004f648c0 0000010004f64898 > > 0000010004f648a8 > > ffffffffffffffff 0000000000000001 0000000000000000 > > ffffffff8012f1cc > > 0000000000010000 0000000000000000 > > Call Trace:<ffffffff80143548>{worker_thread+501} > > <ffffffff8012f1cc>{default_wake_function+0} > > <ffffffff8012f1cc>{default_wake_function+0} > > <ffffffff80143353>{worker_thread+0} > > <ffffffff801472e1>{kthread+218} <ffffffff80110f93>{child_rip+8} > > <ffffffff80147207>{kthread+0} <ffffffff80110f8b>{child_rip+0} > > > > > > Code: ff ff 05 00 00 ff ff ff 00 00 00 00 00 00 00 00 00 00 00 00 > > RIP [<ffffff000005e1b7>] RSP <0000010004f8de60> > > CR2: ffffff000005e1b7 > > SCSI error : <2 0 2 2> return code = 0x10000 > > SCSI error : <2 0 2 2> return code = 0x10000 > > > > > > -- > > > --