raw device for solaris(sparc)
A poster testing IDS 9.2 on Solaris 8 found the raw partition /dev/rdsk/c0t1d0s0 corrupted after initialising the rootdbs. Doug McAllister advised using links rather than device names and Solaris volume manager logical volumes. smooth1 and philippe explained the partition's first pages are overwritten at offset 0, so use an offset of at least 8 KB and never mount the partition. No confirmation.
Auto-generated by Claude from the posts below — may be imperfect; read the full thread.
Hello, I am now testing Informix-dynamic server 9.2 for Sun Solaris 8, I have something can not understand for Solaris 8. (1) I used raw device /dev/rdsk/c0t1d0s0 (2GB, for rootdb) /dev/rdsk/c0t1d0s1 (2GB, for additioanl chunk) (2) after I initialized the rootdb using onmonitor, the partition of /dev/rdsk/c0t1d0s0 disappeared. (partition crupt, partition crash) (3) I used the format utility of solaris 8 to partition the disk. Can anybody tell me how to use raw device in Sun Solaris 8 (Sparc)? Thanks for your help.
First: NEVER,NEVER,NEVER refer to the direct device name, make a link and refer to that. If the device names change, you only need to change the link name. Second: Solaris comes with a volume manager which is a "lite" version of Veritas. Create logical volumes and use these. They end up in /dev/vx/rdsk. I create logical volumes named infchunk1, infchunk2, etc. Never need an offset. B-T-W, have you run into the Solaris 8,Informix,TCP/IP bug yet? tfhkcyt2000@taifuji.com wrote: > > Hello, > > I am now testing Informix-dynamic server 9.2 for > Sun Solaris 8, I have something can not understand > for Solaris 8. > > (1) I used raw device /dev/rdsk/c0t1d0s0 (2GB, for rootdb) > /dev/rdsk/c0t1d0s1 (2GB, for > additioanl chunk) > > (2) after I initialized the rootdb using onmonitor, the > partition of /dev/rdsk/c0t1d0s0 disappeared. (partition crupt, > partition crash) > > (3) I used the format utility of solaris 8 to partition the > disk. > > Can anybody tell me how to use raw device in Sun Solaris 8 (Sparc)? > > Thanks for your help.
Add an offset of at least 8K tfhkcyt2000@taifuji.com wrote in message <8tmr0b$2gd1@imsp212.netvigator.com>... >Hello, > > I am now testing Informix-dynamic server 9.2 for > Sun Solaris 8, I have something can not understand > for Solaris 8. > > (1) I used raw device /dev/rdsk/c0t1d0s0 (2GB, for rootdb) > /dev/rdsk/c0t1d0s1 (2GB, for >additioanl chunk) > > (2) after I initialized the rootdb using onmonitor, the > partition of /dev/rdsk/c0t1d0s0 disappeared. (partition crupt, > partition crash) > > (3) I used the format utility of solaris 8 to partition the > disk. > > Can anybody tell me how to use raw device in Sun Solaris 8 (Sparc)? > > > Thanks for your help. > >
- Sorry for bad english - I've no Sun servers, but I imagine you can translate What I say in your OS 1 - When the partition is mounted, Unix writes datas into the first pages of the partition. 2 - When you initialize you raw device, if offset is 0, informix overwrites these datas. -> crash So : 1 - Create a link (such as /dev/rootraw, /dev/dataraw1, ...) with your partitions /dev/rdsk.... If you have to change the physical partition (hardware failure), you can create a new raw device in another partition and you have just to change the link to match the /dev/raw before restauring. When you create your chunks, use the link name. This link MUST be in the (?) rc.d directory (or similar in Sun system) 2 - NEVER (auto) mount your partition (in UnixWare and System5, it is in /dev/vfstab) Here is an example (anonymised) # # Table of filesystem defaults. # # special fsckdev mountp fstype fsckpass automnt mntopts /dev/dsk/f1 /dev/dsk/f1 /install s5 - no - /dev/dsk/1s1 /dev/rdsk/1s1 /mnt1 vxfs 1 yes - #/dev/dsks/XXX151/s1 /dev/rdsks/XXX151/s1 RAW DEVICE RAW1 #/dev/dsks/XXX151/s2 /dev/rdsks/XXX151/s2 RAW DEVICE RAW2 /dev/dsks/XXX151/s3 /dev/rdsks/XXX151/s3 /oss11 vxfs 1 yes - etc... I 've links /dev/.../151/s1 with "RAW1" etc.. The "#" is only to show the patition in the vfstab but it is not mounted 3 - Keep 8 k (I prefer 96 K) for offset of any chunks that are at the begenning of the partition That prevents from accidental mount ( the first pages of rootdbs will never be overwriten by Unix) "smooth1" <smooth1@iclway.co.uk> a 'crit dans le message news: 3a06e1a2_1@news2.vip.uk.com... > Add an offset of at least 8K > > tfhkcyt2000@taifuji.com wrote in message > <8tmr0b$2gd1@imsp212.netvigator.com>... > >Hello, > > > > I am now testing Informix-dynamic server 9.2 for > > Sun Solaris 8, I have something can not understand > > for Solaris 8. > > > > (1) I used raw device /dev/rdsk/c0t1d0s0 (2GB, for rootdb) > > /dev/rdsk/c0t1d0s1 (2GB, for > >additioanl chunk) > > > > (2) after I initialized the rootdb using onmonitor, the > > partition of /dev/rdsk/c0t1d0s0 disappeared. (partition crupt, > > partition crash) > > > > (3) I used the format utility of solaris 8 to partition the > > disk. > > > > Can anybody tell me how to use raw device in Sun Solaris 8 (Sparc)? > > > > > > Thanks for your help. > > > > > >