[dm-devel] multipath tools - 'fail to get path uid' on LUN 0 whenfailback

Eli Stair estair at ilm.com
Mon Oct 16 22:58:12 UTC 2006 


Confirmed, increasing the timeout loop (MAX_WAIT_SECONDS) is a 
successful work-around for the underlying udev issue.

In my situation, the race condition is a delay between udevd creating 
'/sys/block/sd?/dev' and when it gets around to populating 
'/sys/block/sd?/device/{vendor, model, rev,}'   I haven't gone through 
the udevd code looking for a static sleep, but it does appear there IS a 
uniform 5-6 second wait between creation of the initial 
/sys/block/sd?/dev device and udevd subsequently getting around to 
populating the '/sys/block/sd?/device/*' files.

I have confirmed that the udev-101 release build resolves the root-cause 
issue.  When replacing the RHEL4.4 udev-039 build, there is no delay, 
and all files are created (effectively) immediately.

It seems safe enough to increase the WAIT_MAX_SECONDS value to allow for 
poorly-behaving udevd implementations in the wild, IMO.  In time, the 
upstream-fixed udevd will likely make it less likely this wait loop 
within the code will be hit (it appears).  Even if that occurs, I see it 
as useful to have the multipathd pause and retry, since it is feasible 
that a udev user would have udevd trigger functions that may be 
necessary to access/initialize multipath(or other) devices properly, 
increasing the time it takes to fully populate the /sys entries for it.


Cheers,


/eli




Frederic TEMPORELLI wrote:
> Hi,
> 
> 
> 
> In libmultipath/discovery.c, function wait_for_file(char * filename):
> 
> - increase WAIT_MAX_SECONDS (from 5 to 10 seconds)
> - add a condlog (level 3) to confirm WAIT_MAX_SECONDS and 
> WAIT_LOOP_PER_SECOND
> values, and that we are running the 'daemonized' func.
> 
> Doing so, I'm able to get device serial for LUN0 after 6 seconds...
> => udev is always losing the race, and in our case is more than 5 
> seconds late.
> (we are running a dual IA64 server). May be time to upgrade udev (still 039
> shipped in RHEL4U4) ?
> 
> 
> Here's the output when serial is OK for LUN0, after a 6 seconds polling 
> on /dev/sdX
> =====================================================================
> Oct 16 10:32:26 | sdf: vendor = DDN
> Oct 16 10:32:26 | wait for file (daemon) /sys/block/sdf/device/model max 
> seconds
> 10, loops per sec 5
> Oct 16 10:32:26 | sdf: product = S2A 8500
> Oct 16 10:32:26 | wait for file (daemon) /sys/block/sdf/device/rev max 
> seconds
> 10, loops per sec 5
> Oct 16 10:32:26 | sdf: rev = 5.24
> Oct 16 10:32:26 | sdf: h:b:t:l = 5:0:0:0
> Oct 16 10:32:26 | sdf: tgt_node_name = 0x20000001ff0302a8
> Oct 16 10:32:26 | wait for file (daemon) /dev/sdf max seconds 10, loops 
> per sec 5
> Oct 16 10:32:32 | sdf: serial = 03E0FE340C00
> Oct 16 10:32:32 | sdf: path checker = directio (controller setting)
> Oct 16 10:32:32 | sdf: state = 2
> Oct 16 10:32:32 | sdf: getprio = NULL (internal default)
> Oct 16 10:32:32 | sdf: prio = 1
> Oct 16 10:32:32 | sdf: getuid = /sbin/scsi_id -g -u -s /block/%n (controller
> setting)
> Oct 16 10:32:32 | sdf: uid = 360001ff02002110103e0fe34001f0c00 (callout)
> Oct 16 10:32:32 | 8:16: not found in pathvec
> Oct 16 10:32:32 | sdb: ownership set to 360001ff02002110103e0fe34001f0c00
> =====================================================================
> 
> 
> 
> 
> Eli Stair wrote:
>  >
>  >
>  > You're having identical symptoms to what I reported earlier this week,
>  > with the same versions.  I've since upgraded the base device-mapper
>  > package to 1.02.11 and recompiled multipath-tools, with no change.
>  >
>  >   https://www.redhat.com/archives/dm-devel/2006-October/msg00038.html
>  >
>  > Haven't heard any response yet on it, so I'm slowly going through and
>  > debugging the relevant code and tracking it down. Initially I thought it
>  > was a race condition due to a udev device-creation delay, but it appears
>  > the hangup is actually in /sys/block or (/sys/class) somewhere.
>  >
>  > It's looking to me like it points to the block device being (improperly)
>  > flagged as a partition here:
>  >
>  >
>  > multipathd/main.c:961 (uev_discard):
>  >
>  >         if (sscanf(devpath, "/block/%10s", a) != 1 ||
>  >             sscanf(devpath, "/block/%10[^/]/%10s", a, b) == 2) {
>  >                 condlog(4, "discard event on %s", devpath);
>  >                 return 1;
>  >         }
>  >
>  >
>  > I'm tracking backwards from here, figuring out what vars are passed into
>  > the function that it is comparing to the device in /sys.
>  >
>  >
>  > /eli
>  >
>  >
>  > Frederic TEMPORELLI wrote:
>  >
>  >> Hello,
>  >>
>  >>
>  >> I'm running kernel 2.6.18 + multipath-tools 0.4.7.
>  >>
>  >> Using Emulex HBA (kernel driver 8.1.9) and DDN S2A8500 disk array,
>  >> multipathd
>  >> generates a 'fail to get path uid' error when failback from link down
>  >> failure.
>  >> This only happen for LUN0 of the target. All the other LUNs are nicely
>  >> detected
>  >> and dm are updated for these other LUNs.
>  >>
>  >> attached is the multipathd log (multipathd -d -v4) and the system 
> syslog.
>  >> => I'm thinking that multipathd can't open the /dev/sdX related to
>  >> LUN0 as soon
>  >> as the the scsi event is received. multipathd processing is delayed
>  >> (until open
>  >> error is fired) then the other LUNs are processed (with sd that can be
>  >> opened).
>  >> Following such issue, LUN0 can be put back in multipath configuration
>  >> by running
>  >> by hand multipath command (but we lose the advantage of the multipathd
>  >> monitoring...)
>  >>
>  >> Did anyone get such issue ? any idea to solve it ?
>  >> (may be a way to add a delay between event and scsi_id detection ?)
>  >>
>  >> Thanks for your help.
>  >>
>  >> --
>  >> Frederic TEMPORELLI
>  >>
>  >>
>  >> ------------------------------------------------------------------------
>  >>
>  >> Oct 13 15:18:17 s_kernel at iotiger3 kernel: lpfc 0000:06:02.1: 1:1305
>  >> Link Down Event x4 received Data: x4 x20 x0
>  >> Oct 13 15:18:27 s_kernel at iotiger3 kernel: lpfc 0000:06:02.1: 1:0203
>  >> Nodev timeout on WWPN 23:0:0:1:ff:3:2:a8 NPort xef Data: x8 x7 x0
>  >> Oct 13 15:18:32 s_kernel at iotiger3 kernel: rport-5:0-0: blocked FC
>  >> remote port time out: removing target and saving binding
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: lpfc 0000:06:02.1: 1:1303
>  >> Link Up Event x5 received Data: x5 x1 x8 x2
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Vendor: DDN       Model: S2A
>  >> 8500          Rev: 5.24
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Type:  
>  >> Direct-Access                      ANSI SCSI revision: 03
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdf: 2048000
>  >> 512-byte hdwr sectors (1049 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdf: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdf: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdf: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdf: 2048000
>  >> 512-byte hdwr sectors (1049 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdf: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdf: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdf: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdf: unknown partition table
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:0: Attached scsi
>  >> disk sdf
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:0: Attached scsi
>  >> generic sg6 type 0
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Vendor: DDN       Model: S2A
>  >> 8500          Rev: 5.24
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Type:  
>  >> Direct-Access                      ANSI SCSI revision: 03
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdg: 571416576
>  >> 512-byte hdwr sectors (292565 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdg: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdg: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdg: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdg: 571416576
>  >> 512-byte hdwr sectors (292565 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdg: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdg: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdg: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdg: unknown partition table
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:1: Attached scsi
>  >> disk sdg
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:1: Attached scsi
>  >> generic sg7 type 0
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Vendor: DDN       Model: S2A
>  >> 8500          Rev: 5.24
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Type:  
>  >> Direct-Access                      ANSI SCSI revision: 03
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdh: 2048000
>  >> 512-byte hdwr sectors (1049 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdh: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdh: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdh: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdh: 2048000
>  >> 512-byte hdwr sectors (1049 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdh: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdh: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdh: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdh: unknown partition table
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:2: Attached scsi
>  >> disk sdh
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:2: Attached scsi
>  >> generic sg8 type 0
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Vendor: DDN       Model: S2A
>  >> 8500          Rev: 5.24
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: Type:  
>  >> Direct-Access                      ANSI SCSI revision: 03
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdi: 571416576
>  >> 512-byte hdwr sectors (292565 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdi: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdi: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdi: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdi: 571416576
>  >> 512-byte hdwr sectors (292565 MB)
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdi: Write Protect is off
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdi: Mode Sense: a7 00 10 08
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: SCSI device sdi: drive
>  >> cache: write through w/ FUA
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sdi: unknown partition table
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:3: Attached scsi
>  >> disk sdi
>  >> Oct 13 15:19:14 s_kernel at iotiger3 kernel: sd 5:0:0:3: Attached scsi
>  >> generic sg9 type 0
>  >> Oct 13 15:19:14 s_sys at iotiger3 scsi.agent[14745]: disk at
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:14 s_sys at iotiger3 scsi.agent[14757]: disk at
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:14 s_sys at iotiger3 scsi.agent[14716]: disk at
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:14 s_sys at iotiger3 scsi.agent[14734]: disk at
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >>
>  >>
>  >> ------------------------------------------------------------------------
>  >>
>  >> Oct 13 15:18:43 | sdb: directio checker reports path is up
>  >> Oct 13 15:18:43 | 8:16: delay next check 80s
>  >> Oct 13 15:18:43 | path prio refresh
>  >> Oct 13 15:18:43 | sdb: mask = 0x8
>  >> Oct 13 15:18:43 | sdb: prio = 1
>  >> Oct 13 15:18:43 | sdc: directio checker reports path is up
>  >> Oct 13 15:18:43 | 8:32: delay next check 80s
>  >> Oct 13 15:18:43 | path prio refresh
>  >> Oct 13 15:18:43 | sdc: mask = 0x8
>  >> Oct 13 15:18:43 | sdc: prio = 1
>  >> Oct 13 15:18:43 | sdd: directio checker reports path is up
>  >> Oct 13 15:18:43 | 8:48: delay next check 80s
>  >> Oct 13 15:18:43 | path prio refresh
>  >> Oct 13 15:18:43 | sdd: mask = 0x8
>  >> Oct 13 15:18:43 | sdd: prio = 1
>  >> Oct 13 15:18:43 | sde: directio checker reports path is up
>  >> Oct 13 15:18:43 | 8:64: delay next check 80s
>  >> Oct 13 15:18:43 | path prio refresh
>  >> Oct 13 15:18:43 | sde: mask = 0x8
>  >> Oct 13 15:18:43 | sde: prio = 1
>  >> Oct 13 15:18:44 | tick
>  >> Oct 13 15:18:45 | tick
>  >> Oct 13 15:18:45 | map garbage collection
>  >> Oct 13 15:18:46 | tick
>  >> Oct 13 15:18:47 | tick
>  >> Oct 13 15:18:48 | tick
>  >> Oct 13 15:18:49 | tick
>  >> Oct 13 15:18:50 | tick
>  >> Oct 13 15:18:51 | tick
>  >> Oct 13 15:18:51 | map garbage collection
>  >> Oct 13 15:18:52 | tick
>  >> Oct 13 15:18:53 | tick
>  >> Oct 13 15:18:54 | tick
>  >> Oct 13 15:18:55 | tick
>  >> Oct 13 15:18:56 | tick
>  >> Oct 13 15:18:57 | tick
>  >> Oct 13 15:18:57 | map garbage collection
>  >> Oct 13 15:18:58 | tick
>  >> Oct 13 15:18:59 | tick
>  >> Oct 13 15:19:00 | tick
>  >> Oct 13 15:19:01 | tick
>  >> Oct 13 15:19:02 | tick
>  >> Oct 13 15:19:03 | tick
>  >> Oct 13 15:19:03 | map garbage collection
>  >> Oct 13 15:19:04 | tick
>  >> Oct 13 15:19:05 | tick
>  >> Oct 13 15:19:06 | tick
>  >> Oct 13 15:19:07 | tick
>  >> Oct 13 15:19:08 | tick
>  >> Oct 13 15:19:09 | tick
>  >> Oct 13 15:19:09 | map garbage collection
>  >> Oct 13 15:19:10 | tick
>  >> Oct 13 15:19:11 | tick
>  >> Oct 13 15:19:12 | tick
>  >> Oct 13 15:19:13 | tick
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/fc_transport/target5:0:0'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/fc_transport/target5:0:0
>  >> Oct 13 15:19:14 | SUBSYSTEM=fc_transport
>  >> Oct 13 15:19:14 | SEQNUM=1294
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0
>  >>
>  >> Oct 13 15:19:14 | discard event on /class/fc_transport/target5:0:0
>  >> Oct 13 15:19:14 | uevent 'add' from
>  >> 
> '/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0'Oct
>  >> 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 |
>  >> 
> DEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi
>  >> Oct 13 15:19:14 | SEQNUM=1295
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | discard event on
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_disk/5:0:0:0'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_disk/5:0:0:0
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_disk
>  >> Oct 13 15:19:14 | SEQNUM=1296
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | discard event on /class/scsi_disk/5:0:0:0
>  >> Oct 13 15:19:14 | uevent 'add' from '/block/sdf'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/block/sdf
>  >> Oct 13 15:19:14 | SUBSYSTEM=block
>  >> Oct 13 15:19:14 | SEQNUM=1297
>  >> Oct 13 15:19:14 | MINOR=80
>  >> Oct 13 15:19:14 | MAJOR=8
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | sdf: add path (uevent)
>  >> Oct 13 15:19:14 | sdf: not found in pathvec
>  >> Oct 13 15:19:14 | sdf: mask = 0x1f
>  >> Oct 13 15:19:14 | sdf: bus = 1
>  >> Oct 13 15:19:14 | sdf: dev_t = 8:80
>  >> Oct 13 15:19:14 | sdf: size = 2048000
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_device/5:0:0:0'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_device/5:0:0:0
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_device
>  >> Oct 13 15:19:14 | SEQNUM=1298
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_generic/sg6'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_generic/sg6
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_generic
>  >> Oct 13 15:19:14 | SEQNUM=1299
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:0
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | MAJOR=21
>  >> Oct 13 15:19:14 | MINOR=6
>  >> Oct 13 15:19:14 | uevent 'add' from
>  >> 
> '/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1'Oct
>  >> 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 |
>  >> 
> DEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi
>  >> Oct 13 15:19:14 | SEQNUM=1300
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_disk/5:0:0:1'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_disk/5:0:0:1
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_disk
>  >> Oct 13 15:19:14 | SEQNUM=1301
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/block/sdg'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/block/sdg
>  >> Oct 13 15:19:14 | SUBSYSTEM=block
>  >> Oct 13 15:19:14 | SEQNUM=1302
>  >> Oct 13 15:19:14 | MINOR=96
>  >> Oct 13 15:19:14 | MAJOR=8
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_device/5:0:0:1'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_device/5:0:0:1
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_device
>  >> Oct 13 15:19:14 | SEQNUM=1303
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_generic/sg7'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_generic/sg7
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_generic
>  >> Oct 13 15:19:14 | SEQNUM=1304
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | MAJOR=21
>  >> Oct 13 15:19:14 | MINOR=7
>  >> Oct 13 15:19:14 | uevent 'add' from
>  >> 
> '/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2'Oct
>  >> 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 |
>  >> 
> DEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi
>  >> Oct 13 15:19:14 | SEQNUM=1305
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_disk/5:0:0:2'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_disk/5:0:0:2
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_disk
>  >> Oct 13 15:19:14 | SEQNUM=1306
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/block/sdh'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/block/sdh
>  >> Oct 13 15:19:14 | SUBSYSTEM=block
>  >> Oct 13 15:19:14 | SEQNUM=1307
>  >> Oct 13 15:19:14 | MINOR=112
>  >> Oct 13 15:19:14 | MAJOR=8
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_device/5:0:0:2'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_device/5:0:0:2
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_device
>  >> Oct 13 15:19:14 | SEQNUM=1308
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_generic/sg8'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_generic/sg8
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_generic
>  >> Oct 13 15:19:14 | SEQNUM=1309
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | MAJOR=21
>  >> Oct 13 15:19:14 | MINOR=8
>  >> Oct 13 15:19:14 | uevent 'add' from
>  >> 
> '/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3'Oct
>  >> 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 |
>  >> 
> DEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi
>  >> Oct 13 15:19:14 | SEQNUM=1310
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_disk/5:0:0:3'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_disk/5:0:0:3
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_disk
>  >> Oct 13 15:19:14 | SEQNUM=1311
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/block/sdi'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/block/sdi
>  >> Oct 13 15:19:14 | SUBSYSTEM=block
>  >> Oct 13 15:19:14 | SEQNUM=1312
>  >> Oct 13 15:19:14 | MINOR=128
>  >> Oct 13 15:19:14 | MAJOR=8
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_device/5:0:0:3'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_device/5:0:0:3
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_device
>  >> Oct 13 15:19:14 | SEQNUM=1313
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | uevent 'add' from '/class/scsi_generic/sg9'
>  >> Oct 13 15:19:14 | ACTION=add
>  >> Oct 13 15:19:14 | DEVPATH=/class/scsi_generic/sg9
>  >> Oct 13 15:19:14 | SUBSYSTEM=scsi_generic
>  >> Oct 13 15:19:14 | SEQNUM=1314
>  >> Oct 13 15:19:14 |
>  >> 
> PHYSDEVPATH=/devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:14 | PHYSDEVBUS=scsi
>  >> Oct 13 15:19:14 | PHYSDEVDRIVER=sd
>  >> Oct 13 15:19:14 | MAJOR=21
>  >> Oct 13 15:19:14 | MINOR=9
>  >> Oct 13 15:19:14 | sdf: vendor = DDN
>  >> Oct 13 15:19:14 | sdf: product = S2A 8500
>  >> Oct 13 15:19:14 | sdf: rev = 5.24
>  >> Oct 13 15:19:14 | sdf: h:b:t:l = 5:0:0:0
>  >> Oct 13 15:19:14 | sdf: tgt_node_name = 0x20000001ff0302a8
>  >> Oct 13 15:19:19 | failed to open /dev/sdf
>  >> Oct 13 15:19:19 | sdf: failed to get path uid
>  >> Oct 13 15:19:19 | uevent trigger error
>  >> Oct 13 15:19:19 | Oct 13 15:19:19 | tick
>  >> discard event on /class/scsi_device/5:0:0:0
>  >> Oct 13 15:19:19 | discard event on /class/scsi_generic/sg6
>  >> Oct 13 15:19:19 | discard event on
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:1
>  >>
>  >> Oct 13 15:19:19 | discard event on /class/scsi_disk/5:0:0:1
>  >> Oct 13 15:19:19 | sdg: add path (uevent)
>  >> Oct 13 15:19:19 | sdg: not found in pathvec
>  >> Oct 13 15:19:19 | sdg: mask = 0x1f
>  >> Oct 13 15:19:19 | sdg: bus = 1
>  >> Oct 13 15:19:19 | sdg: dev_t = 8:96
>  >> Oct 13 15:19:19 | sdg: size = 571416576
>  >> Oct 13 15:19:19 | sdg: vendor = DDN
>  >> Oct 13 15:19:19 | sdg: product = S2A 8500
>  >> Oct 13 15:19:19 | sdg: rev = 5.24
>  >> Oct 13 15:19:19 | sdg: h:b:t:l = 5:0:0:1
>  >> Oct 13 15:19:19 | sdg: tgt_node_name = 0x20000001ff0302a8
>  >> Oct 13 15:19:20 | sdg: serial = 03E0FE360D00
>  >> Oct 13 15:19:20 | sdg: path checker = directio (controller setting)
>  >> Oct 13 15:19:20 | sdg: state = 2
>  >> Oct 13 15:19:20 | sdg: getprio = NULL (internal default)
>  >> Oct 13 15:19:20 | sdg: prio = 1
>  >> Oct 13 15:19:20 | sdg: getuid = /sbin/scsi_id -g -u -s /block/%n
>  >> (controller setting)
>  >> Oct 13 15:19:20 | sdg: uid = 360001ff02002110103e0fe36220f0d00 (callout)
>  >> Oct 13 15:19:20 | 8:32: not found in pathvec
>  >> Oct 13 15:19:20 | sdc: ownership set to 
> 360001ff02002110103e0fe36220f0d00
>  >> Oct 13 15:19:20 | sdc: mask = 0xc
>  >> Oct 13 15:19:20 | sdc: state = 2
>  >> Oct 13 15:19:20 | sdc: prio = 1
>  >> Oct 13 15:19:20 | sdg: ownership set to 
> 360001ff02002110103e0fe36220f0d00
>  >> Oct 13 15:19:20 | sdg: not found in pathvec
>  >> Oct 13 15:19:20 | sdg: mask = 0xc
>  >> Oct 13 15:19:20 | sdg: state = 2
>  >> Oct 13 15:19:20 | sdg: prio = 1
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: pgfailback = -2
>  >> (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: pgpolicy =
>  >> multibus (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: selector =
>  >> round-robin 0 (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: features = 0
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: hwhandler = 0
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: rr_weight = 1
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: minio = 1000
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: no_path_retry =
>  >> -1 (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: load table [0
>  >> 571416576 multipath 0 0 1 1 round-robin 0 2 1 8:32 1000 8:96 1000]
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: discover
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 2, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 8:32, len = 4
>  >> Oct 13 15:19:20 | *word = 1000, len = 4
>  >> Oct 13 15:19:20 | *word = 8:96, len = 4
>  >> Oct 13 15:19:20 | *word = 1000, len = 4
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = E, len = 1
>  >> Oct 13 15:19:20 | *word = 2, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = A, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = A, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: rr_weight = 1
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: pgfailback = -2
>  >> (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe36220f0d00: no_path_retry =
>  >> -1 (config file default)
>  >> Oct 13 15:19:20 | sdg path added to devmap
>  >> 360001ff02002110103e0fe36220f0d00
>  >> Oct 13 15:19:20 | discard event on /class/scsi_device/5:0:0:1
>  >> Oct 13 15:19:20 | discard event on /class/scsi_generic/sg7
>  >> Oct 13 15:19:20 | discard event on
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:2
>  >>
>  >> Oct 13 15:19:20 | discard event on /class/scsi_disk/5:0:0:2
>  >> Oct 13 15:19:20 | sdh: add path (uevent)
>  >> Oct 13 15:19:20 | sdh: not found in pathvec
>  >> Oct 13 15:19:20 | sdh: mask = 0x1f
>  >> Oct 13 15:19:20 | sdh: bus = 1
>  >> Oct 13 15:19:20 | sdh: dev_t = 8:112
>  >> Oct 13 15:19:20 | sdh: size = 2048000
>  >> Oct 13 15:19:20 | sdh: vendor = DDN
>  >> Oct 13 15:19:20 | sdh: product = S2A 8500
>  >> Oct 13 15:19:20 | sdh: rev = 5.24
>  >> Oct 13 15:19:20 | sdh: h:b:t:l = 5:0:0:2
>  >> Oct 13 15:19:20 | sdh: tgt_node_name = 0x20000001ff0302a8
>  >> Oct 13 15:19:20 | sdh: serial = 03E0FE380E00
>  >> Oct 13 15:19:20 | sdh: path checker = directio (controller setting)
>  >> Oct 13 15:19:20 | sdh: state = 2
>  >> Oct 13 15:19:20 | sdh: getprio = NULL (internal default)
>  >> Oct 13 15:19:20 | sdh: prio = 1
>  >> Oct 13 15:19:20 | sdh: getuid = /sbin/scsi_id -g -u -s /block/%n
>  >> (controller setting)
>  >> Oct 13 15:19:20 | sdh: uid = 360001ff02002110103e0fe38001f0e00 (callout)
>  >> Oct 13 15:19:20 | 8:48: not found in pathvec
>  >> Oct 13 15:19:20 | sdd: ownership set to 
> 360001ff02002110103e0fe38001f0e00
>  >> Oct 13 15:19:20 | sdd: mask = 0xc
>  >> Oct 13 15:19:20 | sdd: state = 2
>  >> Oct 13 15:19:20 | sdd: prio = 1
>  >> Oct 13 15:19:20 | sdh: ownership set to 
> 360001ff02002110103e0fe38001f0e00
>  >> Oct 13 15:19:20 | sdh: not found in pathvec
>  >> Oct 13 15:19:20 | sdh: mask = 0xc
>  >> Oct 13 15:19:20 | sdh: state = 2
>  >> Oct 13 15:19:20 | sdh: prio = 1
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: pgfailback = -2
>  >> (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: pgpolicy =
>  >> multibus (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: selector =
>  >> round-robin 0 (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: features = 0
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: hwhandler = 0
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: rr_weight = 1
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: minio = 1000
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: no_path_retry =
>  >> -1 (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: load table [0
>  >> 2048000 multipath 0 0 1 1 round-robin 0 2 1 8:48 1000 8:112 1000]
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: discover
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 2, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 8:48, len = 4
>  >> Oct 13 15:19:20 | *word = 1000, len = 4
>  >> Oct 13 15:19:20 | *word = 8:112, len = 5
>  >> Oct 13 15:19:20 | *word = 1000, len = 4
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = E, len = 1
>  >> Oct 13 15:19:20 | *word = 2, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = A, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = A, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: rr_weight = 1
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: pgfailback = -2
>  >> (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe38001f0e00: no_path_retry =
>  >> -1 (config file default)
>  >> Oct 13 15:19:20 | sdh path added to devmap
>  >> 360001ff02002110103e0fe38001f0e00
>  >> Oct 13 15:19:20 | discard event on /class/scsi_device/5:0:0:2
>  >> Oct 13 15:19:20 | discard event on /class/scsi_generic/sg8
>  >> Oct 13 15:19:20 | discard event on
>  >> 
> /devices/pci0000:05/0000:05:1d.0/0000:06:02.1/host5/rport-5:0-0/target5:0:0/5:0:0:3
>  >>
>  >> Oct 13 15:19:20 | discard event on /class/scsi_disk/5:0:0:3
>  >> Oct 13 15:19:20 | sdi: add path (uevent)
>  >> Oct 13 15:19:20 | sdi: not found in pathvec
>  >> Oct 13 15:19:20 | sdi: mask = 0x1f
>  >> Oct 13 15:19:20 | sdi: bus = 1
>  >> Oct 13 15:19:20 | sdi: dev_t = 8:128
>  >> Oct 13 15:19:20 | sdi: size = 571416576
>  >> Oct 13 15:19:20 | sdi: vendor = DDN
>  >> Oct 13 15:19:20 | sdi: product = S2A 8500
>  >> Oct 13 15:19:20 | sdi: rev = 5.24
>  >> Oct 13 15:19:20 | sdi: h:b:t:l = 5:0:0:3
>  >> Oct 13 15:19:20 | sdi: tgt_node_name = 0x20000001ff0302a8
>  >> Oct 13 15:19:20 | sdi: serial = 03E0FE3A0F00
>  >> Oct 13 15:19:20 | sdi: path checker = directio (controller setting)
>  >> Oct 13 15:19:20 | sdi: state = 2
>  >> Oct 13 15:19:20 | sdi: getprio = NULL (internal default)
>  >> Oct 13 15:19:20 | sdi: prio = 1
>  >> Oct 13 15:19:20 | sdi: getuid = /sbin/scsi_id -g -u -s /block/%n
>  >> (controller setting)
>  >> Oct 13 15:19:20 | sdi: uid = 360001ff02002110103e0fe3a220f0f00 (callout)
>  >> Oct 13 15:19:20 | 8:64: not found in pathvec
>  >> Oct 13 15:19:20 | sde: ownership set to 
> 360001ff02002110103e0fe3a220f0f00
>  >> Oct 13 15:19:20 | sde: mask = 0xc
>  >> Oct 13 15:19:20 | sde: state = 2
>  >> Oct 13 15:19:20 | sde: prio = 1
>  >> Oct 13 15:19:20 | sdi: ownership set to 
> 360001ff02002110103e0fe3a220f0f00
>  >> Oct 13 15:19:20 | sdi: not found in pathvec
>  >> Oct 13 15:19:20 | sdi: mask = 0xc
>  >> Oct 13 15:19:20 | sdi: state = 2
>  >> Oct 13 15:19:20 | sdi: prio = 1
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: pgfailback = -2
>  >> (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: pgpolicy =
>  >> multibus (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: selector =
>  >> round-robin 0 (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: features = 0
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: hwhandler = 0
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: rr_weight = 1
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: minio = 1000
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: no_path_retry =
>  >> -1 (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: load table [0
>  >> 571416576 multipath 0 0 1 1 round-robin 0 2 1 8:64 1000 8:128 1000]
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: discover
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 2, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 8:64, len = 4
>  >> Oct 13 15:19:20 | *word = 1000, len = 4
>  >> Oct 13 15:19:20 | *word = 8:128, len = 5
>  >> Oct 13 15:19:20 | *word = 1000, len = 4
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = 1, len = 1
>  >> Oct 13 15:19:20 | *word = E, len = 1
>  >> Oct 13 15:19:20 | *word = 2, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = A, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | *word = A, len = 1
>  >> Oct 13 15:19:20 | *word = 0, len = 1
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: rr_weight = 1
>  >> (controller setting)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: pgfailback = -2
>  >> (config file default)
>  >> Oct 13 15:19:20 | 360001ff02002110103e0fe3a220f0f00: no_path_retry =
>  >> -1 (config file default)
>  >> Oct 13 15:19:20 | sdi path added to devmap
>  >> 360001ff02002110103e0fe3a220f0f00
>  >> Oct 13 15:19:20 | discard event on /class/scsi_device/5:0:0:3
>  >> Oct 13 15:19:20 | discard event on /class/scsi_generic/sg9
>  >> Oct 13 15:19:20 | tick
>  >> Oct 13 15:19:20 | sdg: directio checker reports path is up
>  >> Oct 13 15:19:20 | 8:96: delay next check 40s
>  >> Oct 13 15:19:20 | path prio refresh
>  >> Oct 13 15:19:20 | sdg: mask = 0x8
>  >> Oct 13 15:19:20 | sdg: prio = 1
>  >> Oct 13 15:19:20 | sdh: directio checker reports path is up
>  >> Oct 13 15:19:20 | 8:112: delay next check 40s
>  >> Oct 13 15:19:20 | path prio refresh
>  >> Oct 13 15:19:20 | sdh: mask = 0x8
>  >> Oct 13 15:19:20 | sdh: prio = 1
>  >> Oct 13 15:19:20 | sdi: directio checker reports path is up
>  >> Oct 13 15:19:20 | 8:128: delay next check 40s
>  >> Oct 13 15:19:20 | path prio refresh
>  >> Oct 13 15:19:20 | sdi: mask = 0x8
>  >> Oct 13 15:19:20 | sdi: prio = 1
>  >> Oct 13 15:19:20 | map garbage collection
>  >> Oct 13 15:19:21 | tick
>  >> Oct 13 15:19:22 | tick
>  >> Oct 13 15:19:23 | tick
>  >> Oct 13 15:19:24 | tick
>  >> Oct 13 15:19:25 | unlink pidfile
>  >> Oct 13 15:19:25 | 360001ff02002110103e0fe34001f0c00: stop event
>  >> checker thread
>  >> Oct 13 15:19:25 | sdb: orphaned
>  >> Oct 13 15:19:25 | 360001ff02002110103e0fe36220f0d00: stop event
>  >> checker thread
>  >> Oct 13 15:19:25 | sdc: orphaned
>  >> Oct 13 15:19:25 | sdg: orphaned
>  >> Oct 13 15:19:25 | 360001ff02002110103e0fe38001f0e00: stop event
>  >> checker thread
>  >> Oct 13 15:19:25 | sdd: orphaned
>  >> Oct 13 15:19:25 | sdh: orphaned
>  >> Oct 13 15:19:25 | 360001ff02002110103e0fe3a220f0f00: stop event
>  >> checker thread
>  >> Oct 13 15:19:25 | sde: orphaned
>  >> Oct 13 15:19:25 | SIGUSR1 received
>  >> Oct 13 15:19:25 | SIGUSR1 received
>  >> Oct 13 15:19:25 | SIGUSR1 received
>  >> Oct 13 15:19:25 | SIGUSR1 received
>  >> Oct 13 15:19:25 | sdi: orphaned
>  >>
>  >>
>  >>
>  >> ------------------------------------------------------------------------
>  >>
>  >> --
>  >> dm-devel mailing list
>  >> dm-devel at redhat.com
>  >> https://www.redhat.com/mailman/listinfo/dm-devel
>  >
>  >
>  > --
>  > dm-devel mailing list
>  > dm-devel at redhat.com
>  > https://www.redhat.com/mailman/listinfo/dm-devel
>  >
> 
> 
> --
> Frederic TEMPORELLI
> 
>    \|/ ____ \|/
>    "@'/ ,. \`@"
>    /_| \__/ |_\
>       \__U_/
>

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