search for: path_grouping_policy

Displaying 12 results from an estimated 12 matches for "path_grouping_policy".

2010 May 27
2
Multipathing with Sun 7310
Dear list, we have a relatively new Sun Storage 7310, where we connect CentOS 5.5 Servers (IBM LS21/LS41 Blades) via Brocade Switches, 4GBit FC. The Blades boot from SAN via qla2xxx, and have no harddisks at all. We want them to use multipathing from the very beginning, so /boot and / are already seen by multipathd. Problem is, that the Sun 7310 has two storage heads which run in
2009 Sep 17
1
multipath using defaults rather than multipath.conf contents for some devices (?) - why ?
...]1|HSV2[01]0|HSV300|HSV4[05]0" getuid_callout "/sbin/scsi_id -g -u -s /block/%n" prio_callout "/sbin/mpath_prio_alua /dev/%n" hardware_handler "0" path_selector "round-robin 0" path_grouping_policy group_by_prio failback immediate rr_weight uniform no_path_retry 18 rr_min_io 100 path_checker tur } - but our actual multipathing as shown by multipath -ll , and multipath -ll -v 3 looks as though for the HSV400 it is using the de...
2017 Jan 31
1
multipath show config different in CentOS 7?
...a special configuration for my IBM/1814 storage array luns, then I put something like this in multipath.conf devices { device { vendor "IBM" product "^1814" product_blacklist "Universal Xport" path_grouping_policy "group_by_prio" path_checker "rdac" features "0" hardware_handler "1 rdac" prio "rdac" failback immediate rr_weight "uniform" n...
2013 Sep 18
3
multipathing XCP 1.6
Hello, I hope to be in the right list. my question is the following. I can''t seem to get multipathing configure on XCP 1.6. In XenCenter I was able to enable "Multipath" however, in the LUN under general tab I see " multipath 1 of 1 active", the the CLI I do the following command xe --m node session it list only one session. Can someone help me please? Thanks in
2008 Mar 04
0
Device-mapper-multipath not working correctly with GNBD devices
...o Sectors : 41941688 # After, I have configured the device-mapper multipath by commenting the "blacklist" section in /etc/multipath.conf and adding this "defaults" section: defaults { user_friendly_names yes polling_interval 5 #path_grouping_policy failover path_grouping_policy multibus rr_min_io 1 failback immediate #failback manual no_path_retry fail #no_path_retry queue } Now I have the mpath device configured correctly (IMHO): # multipath -ll mpath0 (gnbd) dm-2 GNBD,GNBD [si...
2015 Apr 14
1
HBA enumeration and multipath configuration
...her combinations, etc. This messes up our multipath filtering for weightedpath priority settings. From /etc/multipath.conf: defaults { user_friendly_names no find_multipaths yes prio weightedpath prio_args "hbtl 0:.:.:.* 1 [1-9]:.:.:.* 10" path_grouping_policy group_by_prio path_selector "service-time 0" failback immediate polling_interval 5 no_path_retry 12 } The setting for prio_args fails to set the correct path map topology and priority against an HBA as I can't predict what HBA is what. Consistently iSC...
2009 Sep 27
0
SUMMARY : multipath using defaults rather than multipath.conf contents for some devices (?) - why ?
...]1|HSV2[01]0|HSV300|HSV4[05]0" getuid_callout "/sbin/scsi_id -g -u -s /block/%n" prio_callout "/sbin/mpath_prio_alua /dev/%n" hardware_handler "0" path_selector "round-robin 0" path_grouping_policy group_by_prio failback immediate rr_weight uniform no_path_retry 18 rr_min_io 100 path_checker tur } - but our actual multipathing as shown by multipath -ll , and multipath -ll -v 3 looks as though for the HSV400 it is using the d...
2006 Apr 13
1
device-mapper multipath
...dev/sdb1 /dev/sdb3 /dev/sdb6 ===================================================== The multipath.conf is as follows: defaults { multipath_tool "/sbin/multipath -v0" udev_dir /dev polling_interval 10 default_selector "round-robin 0" default_path_grouping_policy multibus default_getuid_callout "/sbin/scsi_id -g -u -s /block/%n" default_prio_callout "/bin/true" default_features "0" rr_wmin_io 100 failback immediate } devnode_blacklist { devnode "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*&quot...
2015 Mar 05
1
Cannot remount drive after lost iSCSI connection
The most recent message is: [3108269.919256] sd 2:0:1:0: timing out command, waited 1080s [3108269.919528] sd 2:0:1:0: [sdb] Unhandled error code [3108269.919535] sd 2:0:1:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_OK [3108269.919540] sd 2:0:1:0: [sdb] CDB: Read(10): 28 00 00 01 21 47 00 00 08 00 [3108269.919586] EXT4-fs error (device sdb1): ext4_find_entry: reading directory #2 offset 0
2008 Jun 25
6
dm-multipath use
Are folks in the Centos community succesfully using device-mapper-multipath? I am looking to deploy it for error handling on our iSCSI setup but there seems to be little traffic about this package on the Centos forums, as far as I can tell, and there seems to be a number of small issues based on my reading the dm-multipath developer lists and related resources. -geoff Geoff Galitz Blankenheim
2008 Apr 05
0
BUG(?): multipathd confusion leads to kernel panic in Xen 3.2.1-rc2
...recollection. Xen was compiled with ''make world XEN_TARGET_X86_PAE=y vmxassist=n''. /etc/multipath.conf is as follows: defaults { udev_dir /dev polling_interval 2 selector "round-robin 0" path_grouping_policy multibus # getuid_callout "/sbin/scsi_id -g -u -s /block/%n" prio_callout /bin/true path_checker readsector0 rr_min_io 10 rr_weight priorities failback...
2010 Apr 29
3
Hardware error or ocfs2 error?
Hello, today I noticed the following on *only* one node: ----- cut here ----- Apr 29 11:01:18 node06 kernel: [2569440.616036] INFO: task ocfs2_wq:5214 blocked for more than 120 seconds. Apr 29 11:01:18 node06 kernel: [2569440.616056] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. Apr 29 11:01:18 node06 kernel: [2569440.616080] ocfs2_wq