[Scst-devel] scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not send.

[Xiaoyu Hu <sam...@gm...>]

Hallo,

I am using Qlogic 8Gb FC adaptor as FC target qla2x00tgt, with a Brocade FC
switch connecting ca. 30 FC initiators. I am using vdisk_fileio handler.

After creating a new LUN through vdisk_fileio handler, I use issue_lips
command to make it available to all initiators,  and i got "tx buff is
full" failure. The log message is as below.

Is there any SCST parameter that can be tuned to avoid this issue? or
switching vdisk_blockio could solve it? Or it is just a bug? (we are using
SCST 3.0 stable veersion)

thanks a lot in advance

Samuel



  Aug 11 14:19:29 local04 kernel: qla2x00t(8): Target mode already enabled
Aug 11 14:19:29 local04 kernel: qla2x00t(10): Target mode already enabled
Aug 11 14:19:29 local04 kernel: qla2x00t(9): Target mode already enabled
Aug 11 14:19:29 local04 kernel: qla2x00t(11): Target mode already enabled
Aug 11 14:19:32 local04 kernel: dev_vdisk: Registering virtual
vdisk_fileio device DEVPOOLB_TEST (ROTATIONAL)
Aug 11 14:19:32 local04 kernel: scst: Waiting for 6 active commands to
complete... This might take few minutes for disks or few hours for
tapes, if you use long executed commands, like REWIND or FORMAT. In
case, if you have a hung user space device (i.e. made using
 scst_user
 module) not responding to any commands, if might take virtually
forever until the corresponding user space program recovers and starts
responding or gets killed.
Aug 11 14:19:32 local04 kernel: scst: All active commands completed
Aug 11 14:19:32 local04 kernel: dev_vdisk: Attached SCSI target
virtual disk DEVPOOLB_TEST (file="/dev/zvol/POOLB/TEST", fs=614400MB,
bs=512, nblocks=1258291200, cyln=614400)
Aug 11 14:19:32 local04 kernel: scst: Attached to virtual device
DEVPOOLB_TEST (id 10)
Aug 11 14:19:32 local04 kernel: scst: Waiting for 13 active commands
to complete... This might take few minutes for disks or few hours for
tapes, if you use long executed commands, like REWIND or FORMAT. In
case, if you have a hung user space device (i.e. made using scst_user
module) not responding to any commands, if might take virtually
forever until the corresponding user space program recovers and starts
responding or gets killed.
Aug 11 14:19:32 local04 kernel: scst: All active commands completed
Aug 11 14:19:32 local04 kernel: scst: Added device DEVPOOLB_TEST to
group 21:00:00:24:ff:90:f1:3e (LUN 6, rd_only 0) to target
21:00:00:24:ff:90:f1:3e
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff881868fd7000!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
10:00:00:90:fa:75:08:92 (loop ID 21) scheduled for deletion in 35 secs
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff881869626000!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
10:00:d8:9d:67:11:39:5e (loop ID 45) scheduled for deletion in 35 secs
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff88109558f800!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
50:01:43:80:31:84:86:dc (loop ID 62) scheduled for deletion in 35 secs
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff88186c961c00!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
50:01:43:80:31:84:86:50 (loop ID 105) scheduled for deletion in 35
secs
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff881866384800!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
50:01:43:80:31:84:85:ec (loop ID 41) scheduled for deletion in 35 secs
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff8818685c0400!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
50:01:43:80:31:83:d7:84 (loop ID 46) scheduled for deletion in 35 secs
Aug 11 14:19:32 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:32 local04 kernel: scsi_tgt_it_nexus_destroy(591) The
i_t_neuxs request lost, 10 ffff8812cddb1400!
Aug 11 14:19:32 local04 kernel: qla2x00t(10): session for port
10:00:d8:9d:67:11:39:86 (loop ID 89) scheduled for deletion in 35 secs
Aug 11 14:19:32 local04 kernel: qla2x00t(10): Async event 0x8030
occured: ignoring (m[1]=478, m[2]=2, m[3]=0, m[4]=50c8)
Aug 11 14:19:32 local04 kernel: qla2x00t(10): LIP reset (loop 0xffff), subcode 3
Aug 11 14:19:32 local04 kernel: qla2x00t(10): CTIO with PORT LOGGED
OUT (29) or PORT UNAVAILABLE (28) status 29 received (state 1,
scst_cmd ffff880f10728600, op WRITE(16))
Aug 11 14:19:32 local04 kernel: qla2x00t(10): CTIO with PORT LOGGED
OUT (29) or PORT UNAVAILABLE (28) status 29 received (state 3,
scst_cmd ffff880f10728600, op WRITE(16))
Aug 11 14:19:33 local04 kernel: qla2x00t(10): Doing NEXUS_LOSS_SESS
Aug 11 14:19:33 local04 kernel: scst: TM fn 6 (mcmd ffff8816a0526748,
initiator 21:fd:00:27:f8:c8:cc:16, target 21:00:00:24:ff:90:f1:3e)
Aug 11 14:19:33 local04 kernel: scst: TM fn 6 (mcmd ffff8816a0526748)
finished, status 0
Aug 11 14:19:34 local04 kernel: qla2xxx_find_fcport_by_wwpn: QT:
0x10000090fa750892: enter
Aug 11 14:19:34 local04 kernel: qla2xxx_find_fcport_by_wwpn: QT:
0x1000d89d6711395e: enter
Aug 11 14:19:34 local04 kernel: qla2xxx_find_fcport_by_wwpn: QT:
0x1000d89d67113986: enter
Aug 11 14:19:39 local04 kernel: qla2x00t(10): session for port
10:00:00:90:fa:75:08:92 (loop ID 21) scheduled for deletion in 35 secs
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
10:00:00:90:fa:75:08:92 (loop ID 21) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
10:00:00:90:fa:75:08:92 (loop ID 21) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff881868fd7000!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:19:39 local04 kernel: qla2x00t(10): session for port
10:00:d8:9d:67:11:39:5e (loop ID 45) scheduled for deletion in 35 secs
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
10:00:d8:9d:67:11:39:5e (loop ID 45) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
10:00:d8:9d:67:11:39:5e (loop ID 45) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff881869626000!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:19:39 local04 kernel: qla2x00t(10): session for port
10:00:d8:9d:67:11:39:86 (loop ID 89) scheduled for deletion in 35 secs
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
10:00:d8:9d:67:11:39:86 (loop ID 89) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
10:00:d8:9d:67:11:39:86 (loop ID 88) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff8812cddb1400!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
50:01:43:80:31:84:86:dc (loop ID 62) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
50:01:43:80:31:84:86:dc (loop ID 62) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff88109558f800!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:19:39 local04 kernel: qla2x00t(10): session for port
50:01:43:80:31:84:86:50 (loop ID 105) scheduled for deletion in 35
secs
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
50:01:43:80:31:84:86:50 (loop ID 105) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
50:01:43:80:31:84:86:50 (loop ID 105) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff88186c961c00!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:19:39 local04 kernel: qla2x00t(10): session for port
50:01:43:80:31:84:85:ec (loop ID 41) scheduled for deletion in 35 secs
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
50:01:43:80:31:84:85:ec (loop ID 41) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
50:01:43:80:31:84:85:ec (loop ID 41) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff881866384800!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local  session for port
50:01:43:80:31:83:d7:84 (loop ID 46) login_state ff reappeared
Aug 11 14:19:39 local04 kernel: qla2x00t(10): local session for port
50:01:43:80:31:83:d7:84 (loop ID 46) became global
Aug 11 14:19:39 local04 kernel:
scsi_tgt_uspace_send_it_nexus_request(198) tx buf is full, could not
send
Aug 11 14:19:39 local04 kernel: scsi_tgt_it_nexus_create(577) The
i_t_neuxs request lost, 10 ffff8818685c0400!
Aug 11 14:19:39 local04 kernel: FC Remore Port tgt nexus failed -4
Aug 11 14:22:08 local04 kernel: qla2x00t(10): task abort (s_id=f:9:d,
tag=1222112, param=0)
Aug 11 14:22:08 local04 kernel: scst: TM fn 0 (mcmd ffff8811550ea748,
initiator 10:00:d8:9d:67:11:39:86, target 21:00:00:24:ff:90:f1:3e)
Aug 11 14:22:08 local04 kernel: qla2x00t(10): task abort (s_id=f:9:d,
tag=1222160, param=0)
Aug 11 14:22:08 local04 kernel: scst: TM fn 0 (mcmd ffff8811550ea6d8,
initiator 10:00:d8:9d:67:11:39:86, target 21:00:00:24:ff:90:f1:3e)
Aug 11 14:22:08 local04 kernel: scst: TM fn 0 (mcmd ffff8811550ea748)
finished, status -1
Aug 11 14:22:08 local04 kernel: scst: TM fn 0 (mcmd ffff8811550ea6d8)
finished, status -1
Aug 11 14:22:08 local04 kernel: qla2x00t(10): task abort (s_id=f:9:d,
tag=1222592, param=0)
Aug 11 14:22:08 local04 kernel: scst: TM fn 0 (mcmd ffff8811550ea668,
initiator 10:00:d8:9d:67:11:39:86, target 21:00:00:24:ff:90:f1:3e)
Aug 11 14:22:08 local04 kernel: scst: TM fn 0 (mcmd ffff8811550ea668)
finished, status -1

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