[dm-devel] mpathpersist
Fil
lists at internyc.net
Sat Dec 31 17:52:49 UTC 2011
oops sorry, I was reading something else you responded to so
automatically I wrote to you....
thanks
fil
On 12/31/2011 09:00 AM, Christophe Varoqui wrote:
>
>> I have seen your set of patches for persistent reservation of multipath
>> devices and wanted to try them out. While trying this patch set I have
>> run into several issues. Which code base can I apply this against? Any
>> help would be greatly appreciated. Issues are listed below.
>
> This patchset has been developped by Netapp's Vijay Chauhan.
>
>> 2. I pulled multipath-tools from opensvc git and that patching failed
>> too, so I had to apply all the patches manually.
>>
> This is the correct project repository. The patchset may need rebasing
> over the HEAD. If it does not apply cleanly there, you might try to
> revert to a previous commit.
>
> I'll try this patchset soon and compare my experience with your
> observations.
>
> Thanks for the report.
>
>> 3. while testing mppersist I get following error:
>>
>> mpathpersist --out --register --param-sark=123abc --prout-type=8
>> /dev/mapper/blah -v 4
>> Dec 31 00:54:29 | alias = blah
>> Dec 31 00:54:29 | params = 0 0 1 1 round-robin 0 2 1 8:0 1 8:16 1
>> Dec 31 00:54:29 | status = 2 0 0 0 1 1 A 0 2 0 8:0 A 0 8:16 A 0
>> Dec 31 00:54:29 | blah: disassemble map [0 0 1 1 round-robin 0 2 1 8:0 1
>> 8:16 1 ]
>> Dec 31 00:54:29 | 8:0: not found in pathvec
>> Dec 31 00:54:29 | 8:16: not found in pathvec
>> Dec 31 00:54:29 | No device found for 8:0
>>
>> Dec 31 00:54:29 | No device found for 8:16
>>
>> Dec 31 00:54:29 | blah: disassemble status [2 0 0 0 1 1 A 0 2 0 8:0 A 0
>> 8:16 A 0 ]
>> Dec 31 00:54:29 | 36001405c55fc03cd8193d491eda0d4d7: no path available
>> PR out: command failed
>>
>> 4. with all patches applied, all multipathd cli commands crash the daemon.
>>
>> here are my configs:
>>
>> cat /etc/multipath.conf
>> defaults {
>> user_friendly_names yes
>> polling_interval 10
>> }
>>
>> multipaths {
>> multipath {
>> wwid 36001405c55fc03cd8193d491eda0d4d7
>> alias blah
>> }
>> }
>>
>>
>> devices {
>> device {
>> vendor "QNAP"
>> product "iSCSI Storage"
>> path_selector "round-robin 0"
>> path_grouping_policy multibus
>> getuid_callout "/lib/udev/scsi_id -g -u -d /dev/%n"
>> path_checker directio
>> failback immediate
>> }
>>
>> }
>>
>> blacklist {
>> devnode "^(vd)[a-z]"
>> }
>>
>> multipath -ll -v3
>> Dec 31 00:59:01 | loading /lib64/multipath/libcheckdirectio.so checker
>> Dec 31 00:59:01 | loading /lib64/multipath/libprioconst.so prioritizer
>> Dec 31 00:59:01 | loop0: device node name blacklisted
>> Dec 31 00:59:01 | loop1: device node name blacklisted
>> Dec 31 00:59:01 | loop2: device node name blacklisted
>> Dec 31 00:59:01 | loop3: device node name blacklisted
>> Dec 31 00:59:01 | loop4: device node name blacklisted
>> Dec 31 00:59:01 | loop5: device node name blacklisted
>> Dec 31 00:59:01 | loop6: device node name blacklisted
>> Dec 31 00:59:01 | loop7: device node name blacklisted
>> Dec 31 00:59:01 | vda: device node name blacklisted
>> Dec 31 00:59:01 | dm-0: device node name blacklisted
>> Dec 31 00:59:01 | dm-1: device node name blacklisted
>> Dec 31 00:59:01 | dm-2: device node name blacklisted
>> Dec 31 00:59:01 | dm-3: device node name blacklisted
>> Dec 31 00:59:01 | sda: not found in pathvec
>> Dec 31 00:59:01 | sda: mask = 0x5
>> Dec 31 00:59:01 | sda: dev_t = 8:0
>> Dec 31 00:59:01 | sda: size = 20971520
>> Dec 31 00:59:01 | sda: vendor = QNAP
>> Dec 31 00:59:01 | sda: product = iSCSI Storage
>> Dec 31 00:59:01 | sda: rev = 3.1
>> Dec 31 00:59:01 | sda: h:b:t:l = 2:0:0:0
>> Dec 31 00:59:01 | sda: path state = running
>> Dec 31 00:59:01 | sda: get_state
>> Dec 31 00:59:01 | sda: path checker = directio (controller setting)
>> Dec 31 00:59:01 | sda: checker timeout = 30000 ms (sysfs setting)
>> Dec 31 00:59:01 | directio: starting new request
>> Dec 31 00:59:01 | directio: io finished 4096/0
>> Dec 31 00:59:01 | sda: state = up
>> Dec 31 00:59:01 | sdb: not found in pathvec
>> Dec 31 00:59:01 | sdb: mask = 0x5
>> Dec 31 00:59:01 | sdb: dev_t = 8:16
>> Dec 31 00:59:01 | sdb: size = 20971520
>> Dec 31 00:59:01 | sdb: vendor = QNAP
>> Dec 31 00:59:01 | sdb: product = iSCSI Storage
>> Dec 31 00:59:01 | sdb: rev = 3.1
>> Dec 31 00:59:01 | sdb: h:b:t:l = 3:0:0:0
>> Dec 31 00:59:01 | sdb: path state = running
>> Dec 31 00:59:01 | sdb: get_state
>> Dec 31 00:59:01 | sdb: path checker = directio (controller setting)
>> Dec 31 00:59:01 | sdb: checker timeout = 30000 ms (sysfs setting)
>> Dec 31 00:59:01 | directio: starting new request
>> Dec 31 00:59:01 | directio: io finished 4096/0
>> Dec 31 00:59:01 | sdb: state = up
>> Dec 31 00:59:01 | dm-4: device node name blacklisted
>> ===== paths list =====
>> uuid hcil dev dev_t pri dm_st chk_st vend/prod/rev dev_st
>> 2:0:0:0 sda 8:0 -1 undef ready QNAP,iSCSI Storage running
>> 3:0:0:0 sdb 8:16 -1 undef ready QNAP,iSCSI Storage running
>> Dec 31 00:59:01 | params = 0 0 1 1 round-robin 0 2 1 8:0 1 8:16 1
>> Dec 31 00:59:01 | status = 2 0 0 0 1 1 A 0 2 0 8:0 A 0 8:16 A 0
>> Dec 31 00:59:01 | blah: disassemble map [0 0 1 1 round-robin 0 2 1 8:0 1
>> 8:16 1 ]
>> Dec 31 00:59:01 | sda: mask = 0x8
>> Dec 31 00:59:01 | sda: path state = running
>> Dec 31 00:59:01 | sda: prio = const (internal default)
>> Dec 31 00:59:01 | sda: prio = (internal default)
>> Dec 31 00:59:01 | sda: const prio = 1
>> Dec 31 00:59:01 | sdb: mask = 0x8
>> Dec 31 00:59:01 | sdb: path state = running
>> Dec 31 00:59:01 | sdb: prio = const (internal default)
>> Dec 31 00:59:01 | sdb: prio = (internal default)
>> Dec 31 00:59:01 | sdb: const prio = 1
>> Dec 31 00:59:01 | blah: disassemble status [2 0 0 0 1 1 A 0 2 0 8:0 A 0
>> 8:16 A 0 ]
>> blah (36001405c55fc03cd8193d491eda0d4d7) dm-4 QNAP,iSCSI Storage
>> size=10G features='0' hwhandler='0' wp=rw
>> `-+- policy='round-robin 0' prio=0 status=active
>> |- 2:0:0:0 sda 8:0 active ready running
>> `- 3:0:0:0 sdb 8:16 active ready running
>> Dec 31 00:59:01 | directio checker refcount 2
>> Dec 31 00:59:01 | directio checker refcount 1
>> Dec 31 00:59:01 | unloading const prioritizer
>> Dec 31 00:59:01 | unloading directio checker
>>
>> --
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>> dm-devel at redhat.com
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>
>
>
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