Executing a "vxassist" command to create a volume results in V-5-1-325 dm:diskalign: No disks match specification
Article ID: 100020486
Updated On:
Description
Error Message
VxVM vxassist ERROR V-5-1-325 dm:disk align: No disks match specificationIssue:
The vxassist command is unable to create a volume.
The following error is displayed:
VxVMvxassist ERROR V-5-1-325 dm:disk align: No disks matchs pecification Resolution
The vxassist error is misleading.
The error does not indicate a disk alignment (cylinder boundary) issue.
The erro rindicates that vxassist is attempting to work with a disk media name"disk align"
The cause oft he issue is an error while the vxassist command parses the vxassist rules file.
The rules are contained in the file "/etc/vx/default/vxassist"
In the event a rule is setup and a carriage return is input in the middle of a variable string in the file, the next line is considered a variable and will be parsed incorrectly by the "vxassist" command.
Rule setup is discussed in the 'Veritas Volume Manager Administrator's Guide' in the"Creating Volumes" chapter.
For example(a default rule file, input exactly as in the guide):
#By Default: #create unmirrored, unstriped volumes# allow allocations to spandrives #with RAID-5 create a log, with mirroring don't create alog #align allocations on cylinder boundaries layout=nomirror,nostripe,span,nocontig,raid5log,noregionlog, diskalign #use the fsgen usage type, except when creating RAID-5 volumesusetype=fsgen #allow only root access to a volume mode=u=rw,g=,o= user=root group=root #when mirroring, create two mirrors nmirror=2 #for regular striping, by default create between 2 and 8 stripe #columns max_nstripe=8 min_nstripe=2 #for RAID-5, by default create between 3 and 8 stripecolumns max_nraid5stripe=8 min_nraid5stripe=3 #by default, create 1 log copy for both mirroring and RAID-5volumes nregionlog=1 nraid5log=1 #by default, limit mirroring log lengths to 32Kbytes max_regionloglen=32k #use 64K as the default stripe unit size for regularvolumes stripe_stwid=64k #use 16K as the default stripe unit size for RAID-5 volumes raid5_stwid=16k The example above, typed exactly, will result in vxassist displaying the V-5-1-325error.
The two lines:
layout=nomirror,nostripe,span,nocontig,raid5log,noregionlog, diskalign Should actually be one line when typed:
layout=nomirror,nostripe,span,nocontig,raid5log,noregionlog,diskalign
Issue/Introduction
Executing a "vxassist" command to create a volume results in V-5-1-325 dm:disk align: No disks match specification
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