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Operating Systems AIX cfgmgr and hdisk number allocation Post 302095357 by fosteria on Monday 6th of November 2006 12:18:53 PM
Old 11-06-2006
cfgmgr and hdisk number allocation

Hi - can anybody tell me what the default behaviour is for cfgmgr when it allocates hdisk numbers to newly discovered disks in the ODM ? I want to add a disk from our FAStT700 SAN disk array and import it on our p-series (AIX 5.2). Problem is we import and export Flashcopy devices fror scripted backups there too.

If my Flashcopies are mounted when I introduce the new disk, I'm guessing it will just get the next available id (in our case hdisk27). However, if I subsequently disable the Flashcopies (hdisks17-26) then reintroduce them at a later date, will they still get id's 17-26 or will the system start numbering them from hdisk28 ?? If so I might have to change all our scripts.

Essentially I just need to know does the system always use the lowest available id; or just the next (incremental) one to the one it just allocated ?

Thanks in advance.
 

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sys_attrs_tc(5) 						File Formats Manual						   sys_attrs_tc(5)

NAME
sys_attrs_tc - tc subsystem attributes DESCRIPTION
This reference page lists and describes attributes for the TURBOchannel Bus (tc) kernel subsystem. Refer to the sys_attrs(5) reference page for an introduction to the topic of kernel subsystem attributes. For this subsytem, users should modify only the following attribute and do so only for the purpose described. Any other visible attributes cannot or should not be modified. Enables (nonzero value) or disables (0) console messages that appear at boot time and runtime for use by device driver developers to collect information about a driver configuration problem. A developer can set this attribute by using the sysconfig or sysconfigdb utility. See sysconfig(8), sysconfigdb(8), and cfgmgr(8) for more information on options for modifying attributes and reconfiguring a kernel subsystem. Default value: 0 (disabled) SEE ALSO
Commands: cfgmgr(8), sysconfig(8), sysconfigdb(8) Files: stanza(4), cfgmgr.auth(4), sysconfigtab(4) Others: sys_attrs(5) Writing TURBOchannel Device Drivers sys_attrs_tc(5)
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