[dm-devel] multipath disk size

[Arsene Gschwind]

Hello

I'm trying to setup a FC Storage (Adaptec SANBloc 2Gb) using multipath
(Kernel 2.6.15 - multipath-tool-0.4.7 on Fedora Core 5 )
Everything seem to run right, but the disk created by multipath does not
reflect the physical one.
I do have a physical volume that is about 67GB big, when multipath
creates the dm device it is at least 1GB.
Here is the output of multipath -v3:
----------------------------------------------------
dm-0: blacklisted
dm-1: blacklisted
dm-2: blacklisted
dm-4: blacklisted
dm-5: blacklisted
fd0: blacklisted
hdd: blacklisted
md0: blacklisted
ram0: blacklisted
ram10: blacklisted
ram11: blacklisted
ram12: blacklisted
ram13: blacklisted
ram14: blacklisted
ram15: blacklisted
ram1: blacklisted
ram2: blacklisted
ram3: blacklisted
ram4: blacklisted
ram5: blacklisted
ram6: blacklisted
ram7: blacklisted
ram8: blacklisted
ram9: blacklisted
sda: not found in pathvec
sda: mask = 0x1f
sda: bus = 1
sda: dev_t = 8:0
sda: size = 71553024
sda: vendor = LSILOGIC
sda: product = 1030          IM
sda: rev = 1000
sda: h:b:t:l = 0:0:1:0
sda: serial =
sda: path checker = readsector0 (config file default)
sda: state = 2
sda: getprio = /bin/true (config file default)
sda: prio = 0
sda: getuid = /sbin/scsi_id -g -u -s /block/%n (config file default)
error calling out /sbin/scsi_id -g -u -s /block/sda
sdb: not found in pathvec
sdb: mask = 0x1f
sdb: bus = 1
sdb: dev_t = 8:16
sdb: size = 142114816
sdb: vendor = EUROLOGC
sdb: product = FC2502
sdb: rev = 7902
sdb: h:b:t:l = 2:0:0:0
sdb: tgt_node_name = 0x20000080e512dc77
sdb: serial = 0000dc7720000080e512dc770000000000000000
sdb: path checker = readsector0 (controler setting)
sdb: state = 2
sdb: getprio = /bin/true (config file default)
sdb: prio = 0
sdb: getuid = /sbin/scsi_id -g -u -p 0x80 -s /block/%n (controler setting)
sdb: uid = SEUROLOGCFC2502_0000dc7720000080e512dc770000000000000000
(callout)
sdc: not found in pathvec
sdc: mask = 0x1f
sdc: bus = 1
sdc: dev_t = 8:32
sdc: size = 142114816
sdc: vendor = EUROLOGC
sdc: product = FC2502
sdc: rev = 7902
sdc: h:b:t:l = 2:0:1:0
sdc: tgt_node_name = 0x20000080e512dc77
sdc: serial = 0000dc7720000080e512dc770000000000000000
sdc: path checker = readsector0 (controler setting)
sdc: state = 2
sdc: getprio = /bin/true (config file default)
sdc: prio = 0
sdc: getuid = /sbin/scsi_id -g -u -p 0x80 -s /block/%n (controler setting)
sdc: uid = SEUROLOGCFC2502_0000dc7720000080e512dc770000000000000000
(callout)
===== paths list =====
uuid                                                     hcil    dev
dev_t pri
                                                         0:0:1:0 sda 8:0   0
SEUROLOGCFC2502_0000dc7720000080e512dc770000000000000000 2:0:0:0 sdb 8:16  0
SEUROLOGCFC2502_0000dc7720000080e512dc770000000000000000 2:0:1:0 sdc 8:32  0
8:16 ownership set to hdmail
sdb: not found in pathvec
sdb: mask = 0xc
sdb: state = 2
sdb: prio = 0
8:32 ownership set to hdmail
sdc: not found in pathvec
sdc: mask = 0xc
sdc: state = 2
sdc: prio = 0
hdmail: pgfailback = -2 (config file default)
hdmail: pgpolicy = failover (controler setting)
hdmail: selector = round-robin 0 (controler setting)
hdmail: features = 0 (internal default)
hdmail: hwhandler = 0 (internal default)
hdmail: rr_weight = 2 (config file default)
hdmail: minio = 100 (config file default)
hdmail: no_path_retry = -1 (config file default)
hdmail: set ACT_CREATE (map does not exist)
hdmail: set ACT_CREATE (map does not exist)
create: hdmail (SEUROLOGCFC2502_0000dc7720000080e512dc770000000000000000)
[size=1 GB][features=0][hwhandler=0]
\_ round-robin 0 [prio=0][undef]
\_ 2:0:0:0 sdb 8:16  [undef][ready]
\_ round-robin 0 [prio=0][undef]
\_ 2:0:1:0 sdc 8:32  [undef][ready]
----------------------------------------------------
When you look at the disk size, it return the correct value but when it
creates the dm device it does it too small.
Do you have any Idea why this happen?

Thanks a lot for your work and your help

Regards,
Arsène

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