Hello Alasdair/All
The recommended entries for the HP Storageworks Arrays are as follows:
r += store_hwe_ext(hw, "HP", "HSV101*", GROUP_BY_PRIO,
DEFAULT_GETUID,
"/sbin/mpath_prio_alua %n", "0","1
queue_if_no_path", "tur",
-FAILBACK_IMMEDIATE, NULL);
r += store_hwe_ext(hw, "COMPAQ", "HSV111*", GROUP_BY_PRIO,
DEFAULT_GETUID,
"/sbin/mpath_prio_alua %n", "0", "1
queue_if_no_path", "tur",
-FAILBACK_IMMEDIATE, NULL);
r += store_hwe_ext(hw, "HP", "HSV200", GROUP_BY_PRIO,
DEFAULT_GETUID,
"/sbin/mpath_prio_alua %n", "0", "1
queue_if_no_path", "tur",
-FAILBACK_IMMEDIATE, NULL);
r += store_hwe_ext(hw, "HP", "HSV210", GROUP_BY_PRIO,
DEFAULT_GETUID,
"/sbin/mpath_prio_alua %n", "0", "1
queue_if_no_path", "tur",
-FAILBACK_IMMEDIATE, NULL);
r += store_hwe_ext(hw, "HP", "OPEN-*", MULTIBUS, DEFAULT_GETUID,
NULL, "0", "0",
"tur", -FAILBACK_IMMEDIATE, NULL);
Currently HP recommends the above parameters in /etc/multipath.conf by
means of Configuration Guide for the HP Storageworks Arrays to override
the current default settings in hwtable.c.
Please let me know if any information needed further on this.
Thanks,
Anbu
-----Original Message-----
From: dm-devel-bounces@xxxxxxxxxx [mailto:dm-devel-bounces@xxxxxxxxxx]
On Behalf Of Matthias Rudolph
Sent: Wednesday, October 25, 2006 3:06 PM
To: dm-devel@xxxxxxxxxx
Subject: Wrong entries in hwtable.c for Hitachi Storage
indevice-mapper-multipath-0.4.5-16.1.RHEL4.src.rpm
Hi all,
I checked the latest dm-multipath in RHEL4U4 with Hitachi Storage
Arrays. Normally it should work now without a modified or created
/etc/multipath.conf. But it does not. I beliefe the file hwtable.c of
the source is not correct. The right entries on kernel.org did not found
the way to the RedHat package. Here my suggestions for file hwtable.c:
Wrong lines (please delete):
r += store_hwe_ext(hw, "HP", "OPEN-.", MULTIBUS, DEFAULT_GETUID,
NULL,
"0", "0", "tur", FAILBACK_UNDEF, NULL);
r += store_hwe(hw, "HITACHI", "DF400", MULTIBUS,
DEFAULT_GETUID);
r += store_hwe(hw, "HITACHI", "DF500", MULTIBUS,
DEFAULT_GETUID);
r += store_hwe(hw, "HITACHI", "DF600", MULTIBUS,
DEFAULT_GETUID);
r += store_hwe_ext(hw, "HITACHI", "DF600F*", GROUP_BY_PRIO,
DEFAULT_GETUID, "/sbin/mpath/prio_hds_modular %d", "0",
"0",
"readsector0", -FAILBACK_IMMEDIATE, NULL);
Correct lines (please add):
r += store_hwe_ext(hw, "{HITACHI,HP}", "OPEN-.*", MULTIBUS,
DEFAULT_GETUID, NULL, "0", "0", "readsector0",
FAILBACK_UNDEF,
NULL);
r += store_hwe_ext(hw, "HITACHI", "DF.*", GROUP_BY_PRIO,
DEFAULT_GETUID, "/sbin/mpath_prio_hds_modular %d", "0",
"0",
"readsector0", -FAILBACK_IMMEDIATE, NULL);
I hope the regular expressions are correct for dm-multipath.
The file multipath.conf.defaults does also not match the entries in file
hwtable.c.
A temporary fix for the problem above is to create the file
/etc/multipath.conf with the entries below:
devices {
device {
vendor "HITACHI"
product "DF.*"
path_grouping_policy group_by_prio
prio_callout "/sbin/pp_hds_modular %d"
path_checker readsector0
getuid_callout "/sbin/scsi_id -g -u -s
/block/%n"
failback immediate
}
device {
vendor "HITACHI"
product "OPEN-.*"
path_grouping_policy multibus
path_checker readsector0
getuid_callout "/sbin/scsi_id -g -u -s
/block/%n"
}
}
Regards
Matthias Rudolph
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