From: Simon Loewenthal/NL/Tele2 <simon.loewenthal@tele2.com>
To: LVM general discussion and development <linux-lvm@redhat.com>
Subject: Re: [linux-lvm] LVM preference for multipath verses disk/by-id/scsi
Date: Tue, 05 Jan 2010 17:12:37 +0100 [thread overview]
Message-ID: <4B4364F5.40209@tele2.com> (raw)
In-Reply-To: <4B4321A4.1030005@tele2.com>
More info:
I thought for a moment that LVM might cache the devices somewhere other
than in the cache but am unsure as per output from strace :-
# grep -i cach typescript.*
typescript.pvscan:open("/etc/ld.so.cache", O_RDONLY) = 3
typescript.pvscan:open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
typescript.pvscan:stat("/etc/lvm/.cache", 0x7fff2193b6d0) = -1 ENOENT
(No such file or directory)
typescript.vgscan:open("/etc/ld.so.cache", O_RDONLY) = 3
typescript.vgscan:open("/usr/lib64/gconv/gconv-modules.cache", O_RDONLY) = 3
typescript.vgscan:stat("/etc/lvm/.cache", 0x7fff8d6ad440) = -1 ENOENT
(No such file or directory)
Simon Loewenthal/NL/Tele2 wrote:
> Update:
>
> I modified the filter to read:
> filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|",
> "r|/dev/dm-*|" , "a|/dev/mapper/EMC*|", "a|/dev/cciss/*|" , "r/.*/" ]
>
> and this made no difference.
>
> What did work was to turn off the cache and delete the .cache file:
> write_cache_state = 0
>
> Then the discs were brought in as so:
> PV Name /dev/mapper/EMC_00FD
> PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw
> PV Status allocatable
> Total PE / Free PE 539 / 0
>
>
> Howevr, as soon as I activated the cache:
> write_cache_state = 1
> then the discs in the volume group magically reverted to
>
> PV Name /dev/dm-16
> PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw
> PV Status allocatable
> Total PE / Free PE 539 / 0
>
>
> Any clues?
>
> Simon Loewenthal/NL/Tele2 wrote:
>
>> I just this on a system with these in the lvm.conf:
>> preferred_names = [ "^/dev/mapper/EMC_", "^/dev/[hs]d", "^/dev/cciss" ]
>> filter = [ "r|/dev/.*/by-path/.*|", "r|/dev/.*/by-id/.*|",
>> "a|/dev/mapper/EMC_*|", "a|/dev/cciss/*|" , "r/.*/" ]
>>
>>
>> After a pvscan and vgscan I did a vgimport. Guess what: A vgimport of
>> the volume group ignored the filters and preferred devices and imported
>> the vg with these PVs (only one PV shown for brevity, but the rest are
>> similar ):
>>
>> PV Name /dev/dm-16
>> PV UUID ctz8rd-ew58-0pU8-FssR-x9pR-KSA9-mI4flw
>> PV Status allocatable
>> Total PE / Free PE 539 / 0
>>
>> Unless, /dev/dm-16 is really some abstracted link back to a multipathed
>> device but I cannot work out this bit:
>> # ls -l /dev/mapper/
>> total 0
>> brw------- 1 root root 253, 17 Dec 30 15:11 EMC_0012
>> [SNIP]
>>
>> # dmsetup ls
>> EMC_0103 (253, 13)
>> EMC_00FF (253, 15)
>> EMC_0101 (253, 14)
>> EMC_00FD (253, 16)
>> vg00-app052 (253, 3)
>> vg00-xen (253, 2)
>> vg00-usr (253, 0)
>> EMC_0113 (253, 4)
>> vg00-var (253, 1)
>> EMC_0012 (253, 17)
>> EMC_010F (253, 6)
>> EMC_0109 (253, 10)
>> EMC_0111 (253, 5)
>> EMC_010D (253, 8)
>> EMC_0107 (253, 11)
>> EMC_010B (253, 9)
>> EMC_0105 (253, 12)
>>
>>
>> The output of pvscan and vgscan follow:
>>
>> *PVSCAN*
>> # pvscan -vv
>> Setting global/locking_type to 1
>> File-based locking selected.
>> Setting global/locking_dir to /var/lock/lvm
>> Wiping cache of LVM-capable devices
>> Wiping internal VG cache
>> Walking through all physical volumes
>> /dev/cciss/c0d0: size is 286677120 sectors
>> /dev/cciss/c0d0p1: size is 208782 sectors
>> /dev/cciss/c0d0p1: size is 208782 sectors
>> /dev/cciss/c0d0p1: No label detected
>> /dev/cciss/c0d0p2: size is 4209030 sectors
>> /dev/cciss/c0d0p2: size is 4209030 sectors
>> /dev/cciss/c0d0p2: No label detected
>> /dev/cciss/c0d0p3: size is 10490445 sectors
>> /dev/cciss/c0d0p3: size is 10490445 sectors
>> /dev/cciss/c0d0p3: No label detected
>> /dev/cciss/c0d0p4: size is 271755540 sectors
>> /dev/cciss/c0d0p4: size is 271755540 sectors
>> /dev/cciss/c0d0p4: lvm2 label detected
>> /dev/mapper/EMC_0113: size is 35358720 sectors
>> /dev/mapper/EMC_0113: size is 35358720 sectors
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: size is 35358720 sectors
>> /dev/mapper/EMC_0111: size is 35358720 sectors
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: size is 35358720 sectors
>> /dev/mapper/EMC_010F: size is 35358720 sectors
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: size is 35358720 sectors
>> /dev/mapper/EMC_010D: size is 35358720 sectors
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: size is 35358720 sectors
>> /dev/mapper/EMC_010B: size is 35358720 sectors
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: size is 35358720 sectors
>> /dev/mapper/EMC_0109: size is 35358720 sectors
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: size is 35358720 sectors
>> /dev/mapper/EMC_0107: size is 35358720 sectors
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: size is 35358720 sectors
>> /dev/mapper/EMC_0105: size is 35358720 sectors
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: size is 35358720 sectors
>> /dev/mapper/EMC_0103: size is 35358720 sectors
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: size is 35358720 sectors
>> /dev/mapper/EMC_0101: size is 35358720 sectors
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: size is 35358720 sectors
>> /dev/mapper/EMC_00FF: size is 35358720 sectors
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: size is 35358720 sectors
>> /dev/mapper/EMC_00FD: size is 35358720 sectors
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0012: size is 9600 sectors
>> /dev/mapper/EMC_0012: size is 9600 sectors
>> /dev/mapper/EMC_0012: No label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/cciss/c0d0p4: lvm2 label detected
>> /dev/cciss/c0d0p4: lvm2 label detected
>> PV /dev/mapper/EMC_0113 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_0111 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_010F is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_010D is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_010B is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_0109 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_0107 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_0105 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_0103 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_0101 is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_00FF is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/mapper/EMC_00FD is in exported VG vg_mds [16.84 GB / 0 free]
>> PV /dev/cciss/c0d0p4 VG vg00 lvm2 [129.58 GB / 44.00 MB free]
>> Total: 13 [331.71 GB] / in use: 13 [331.71 GB] / in no VG: 0 [0 ]
>>
>> *VGSCAN
>> *# vgscan -vv
>> Setting global/locking_type to 1
>> File-based locking selected.
>> Setting global/locking_dir to /var/lock/lvm
>> Wiping cache of LVM-capable devices
>> Wiping internal VG cache
>> Reading all physical volumes. This may take a while...
>> Finding all volume groups
>> /dev/cciss/c0d0: size is 286677120 sectors
>> /dev/cciss/c0d0p1: size is 208782 sectors
>> /dev/cciss/c0d0p1: size is 208782 sectors
>> /dev/cciss/c0d0p1: No label detected
>> /dev/cciss/c0d0p2: size is 4209030 sectors
>> /dev/cciss/c0d0p2: size is 4209030 sectors
>> /dev/cciss/c0d0p2: No label detected
>> /dev/cciss/c0d0p3: size is 10490445 sectors
>> /dev/cciss/c0d0p3: size is 10490445 sectors
>> /dev/cciss/c0d0p3: No label detected
>> /dev/cciss/c0d0p4: size is 271755540 sectors
>> /dev/cciss/c0d0p4: size is 271755540 sectors
>> /dev/cciss/c0d0p4: lvm2 label detected
>> /dev/mapper/EMC_0113: size is 35358720 sectors
>> /dev/mapper/EMC_0113: size is 35358720 sectors
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: size is 35358720 sectors
>> /dev/mapper/EMC_0111: size is 35358720 sectors
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: size is 35358720 sectors
>> /dev/mapper/EMC_010F: size is 35358720 sectors
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: size is 35358720 sectors
>> /dev/mapper/EMC_010D: size is 35358720 sectors
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: size is 35358720 sectors
>> /dev/mapper/EMC_010B: size is 35358720 sectors
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: size is 35358720 sectors
>> /dev/mapper/EMC_0109: size is 35358720 sectors
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: size is 35358720 sectors
>> /dev/mapper/EMC_0107: size is 35358720 sectors
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: size is 35358720 sectors
>> /dev/mapper/EMC_0105: size is 35358720 sectors
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: size is 35358720 sectors
>> /dev/mapper/EMC_0103: size is 35358720 sectors
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: size is 35358720 sectors
>> /dev/mapper/EMC_0101: size is 35358720 sectors
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: size is 35358720 sectors
>> /dev/mapper/EMC_00FF: size is 35358720 sectors
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: size is 35358720 sectors
>> /dev/mapper/EMC_00FD: size is 35358720 sectors
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0012: size is 9600 sectors
>> /dev/mapper/EMC_0012: size is 9600 sectors
>> /dev/mapper/EMC_0012: No label detected
>> Locking /var/lock/lvm/V_vg_mds RB
>> Finding volume group "vg_mds"
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> /dev/mapper/EMC_0113: lvm2 label detected
>> /dev/mapper/EMC_0111: lvm2 label detected
>> /dev/mapper/EMC_010F: lvm2 label detected
>> /dev/mapper/EMC_010D: lvm2 label detected
>> /dev/mapper/EMC_010B: lvm2 label detected
>> /dev/mapper/EMC_0109: lvm2 label detected
>> /dev/mapper/EMC_0107: lvm2 label detected
>> /dev/mapper/EMC_0105: lvm2 label detected
>> /dev/mapper/EMC_0103: lvm2 label detected
>> /dev/mapper/EMC_0101: lvm2 label detected
>> /dev/mapper/EMC_00FF: lvm2 label detected
>> /dev/mapper/EMC_00FD: lvm2 label detected
>> Found exported volume group "vg_mds" using metadata type lvm2
>> Unlocking /var/lock/lvm/V_vg_mds
>> Locking /var/lock/lvm/V_vg00 RB
>> Finding volume group "vg00"
>> /dev/cciss/c0d0p4: lvm2 label detected
>> /dev/cciss/c0d0p4: lvm2 label detected
>> Found volume group "vg00" using metadata type lvm2
>> Unlocking /var/lock/lvm/V_vg00
>>
>> brem belguebli wrote:
>>
>>
>>> Hi,
>>>
>>> Never had no problem with it.
>>>
>>> The only problem I've hit was due to the binding file being, by
>>> default, located in /var/lib/multipath, which is in my setup on a
>>> separate LV than /, during boot time the devices were not correctly
>>> created.
>>>
>>> Just had to switch the binding file to /etc and now no more problem.
>>>
>>> extract of my /etc/multipath.conf :
>>>
>>>
>>> defaults {
>>> ...
>>> flush_on_last_del yes
>>> user_friendly_names yes
>>> bindings_file "/etc/multipath_bindings"
>>> }
>>>
>>> 2010/1/4 Bryn M. Reeves <bmr@redhat.com>:
>>>
>>>
>>>
>>>> On Wed, 2009-12-30 at 12:52 +0100, brem belguebli wrote:
>>>>
>>>>
>>>>
>>>>> Hi,
>>>>>
>>>>> see man 5 lvm.conf there is an option called preferred_names which is
>>>>> well explained
>>>>>
>>>>> It'll instruct lvm to use the preferred_names you configured in the
>>>>> lvm.conf file if they exist
>>>>>
>>>>> ie : preferred_names = "/dev/mpath/" will use /dev/mpath/XXX instead
>>>>> of /dev/mapper/XXX
>>>>>
>>>>>
>>>>>
>>>> It's best not to use the symlinks in /dev/mpath - they are not always
>>>> reliable. Use the device nodes created in /dev/mapper instead.
>>>>
>>>> Regards,
>>>> Bryn.
>>>>
>>>>
>>>> _______________________________________________
>>>> linux-lvm mailing list
>>>> linux-lvm@redhat.com
>>>> https://www.redhat.com/mailman/listinfo/linux-lvm
>>>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>>>
>>>>
>>>>
>>>>
>>> _______________________________________________
>>> linux-lvm mailing list
>>> linux-lvm@redhat.com
>>> https://www.redhat.com/mailman/listinfo/linux-lvm
>>> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
>>>
>>>
>>>
>>
>>
>
>
--
Simon Loewenthal/Tele2
GSM: +31 6 2000 5427
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next prev parent reply other threads:[~2010-01-05 16:13 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-12-30 10:18 [linux-lvm] LVM preference for multipath verses disk/by-id/scsi Simon Loewenthal/NL/Tele2
2009-12-30 10:31 ` Simon Loewenthal/NL/Tele2
2009-12-30 11:52 ` brem belguebli
2009-12-30 12:37 ` Simon Loewenthal/NL/Tele2
2009-12-30 12:40 ` Simon Loewenthal/NL/Tele2
2009-12-30 13:00 ` brem belguebli
2009-12-30 13:45 ` Simon Loewenthal/NL/Tele2
2009-12-30 14:15 ` Simon Loewenthal/NL/Tele2
2010-01-04 12:54 ` Bryn M. Reeves
2010-01-04 13:17 ` brem belguebli
2010-01-05 10:52 ` Simon Loewenthal/NL/Tele2
2010-01-05 11:25 ` Simon Loewenthal/NL/Tele2
2010-01-05 16:12 ` Simon Loewenthal/NL/Tele2 [this message]
2010-01-11 14:12 ` Simon Loewenthal/NL/Tele2
2010-01-11 15:18 ` Eugene Vilensky
2010-01-11 16:06 ` Simon Loewenthal/NL/Tele2
2010-01-12 1:13 ` Eugene Vilensky
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