04-14-2008
mirror external scsi to san
Hi,
How do I mirror an external scsi vg to one hdisk san? The vg has multiple hdisks and the san hdisk has only one.
Is this possible or do I need to create the same hdisks as the scsi? What I meant is, if the scsi vg has 10 hdisk then I need to create also 10 hdisk of san with the same size as per hdisk?
Or I can mirror a logical vg one by one?
Here's the sample of one of the vg:
LV NAME TYPE LPs PPs PVs LV STATE MOUNT POINT
lv110 jfs 3840 3840 8 closed/syncd N/A
lv102 jfs 128 128 1 closed/syncd N/A
lv68 jfs 16 16 1 closed/syncd N/A
loglv03 jfslog 1 1 1 open/syncd N/A
lvcrt01 jfs 178 178 1 open/syncd /crt01
lv106 jfs 16 16 1 open/syncd /db2replication
lv100 jfs 320 320 2 open/syncd /db2logs
paging05 paging 16 16 1 open/syncd N/A
paging06 paging 16 16 1 open/syncd N/A
paging01 paging 16 16 1 open/syncd N/A
lvcrt02 jfs 175 175 1 open/syncd /crt02
lv103 jfs 256 256 1 closed/syncd N/A
As much as possible I don't want a downtime. I don't know what is the best approach.
Thanks in advance,
itik
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LEARN ABOUT CENTOS
gnutls_x509_crt_get_subject_alt_name
gnutls_x509_crt_get_subject_alt_name(3) gnutls gnutls_x509_crt_get_subject_alt_name(3)
NAME
gnutls_x509_crt_get_subject_alt_name - API function
SYNOPSIS
#include <gnutls/x509.h>
int gnutls_x509_crt_get_subject_alt_name(gnutls_x509_crt_t cert, unsigned int seq, void * san, size_t * san_size, unsigned int * critical);
ARGUMENTS
gnutls_x509_crt_t cert
should contain a gnutls_x509_crt_t structure
unsigned int seq
specifies the sequence number of the alt name (0 for the first one, 1 for the second etc.)
void * san is the place where the alternative name will be copied to
size_t * san_size
holds the size of san.
unsigned int * critical
will be non-zero if the extension is marked as critical (may be null)
DESCRIPTION
This function retrieves the Alternative Name (2.5.29.17), contained in the given certificate in the X509v3 Certificate Extensions.
When the SAN type is otherName, it will extract the data in the otherName's value field, and GNUTLS_SAN_OTHERNAME is returned. You may use
gnutls_x509_crt_get_subject_alt_othername_oid() to get the corresponding OID and the "virtual" SAN types (e.g., GNUTLS_SAN_OTHERNAME_XMPP).
If an otherName OID is known, the data will be decoded. Otherwise the returned data will be DER encoded, and you will have to decode it
yourself. Currently, only the RFC 3920 id-on-xmppAddr SAN is recognized.
RETURNS
the alternative subject name type on success, one of the enumerated gnutls_x509_subject_alt_name_t. It will return GNUTLS_E_SHORT_MEM-
ORY_BUFFER if san_size is not large enough to hold the value. In that case san_size will be updated with the required size. If the cer-
tificate does not have an Alternative name with the specified sequence number then GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE is returned.
REPORTING BUGS
Report bugs to <bug-gnutls@gnu.org>.
General guidelines for reporting bugs: http://www.gnu.org/gethelp/
GnuTLS home page: http://www.gnu.org/software/gnutls/
COPYRIGHT
Copyright (C) 2012 Free Software Foundation, Inc..
Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright
notice and this notice are preserved.
SEE ALSO
The full documentation for gnutls is maintained as a Texinfo manual. If the info and gnutls programs are properly installed at your site,
the command
info gnutls
should give you access to the complete manual. As an alternative you may obtain the manual from:
http://www.gnu.org/software/gnutls/manual/
gnutls 3.1.15 gnutls_x509_crt_get_subject_alt_name(3)