Another excellent link: http://togami.com/~warren/guides/remoteraidcrazies/ > -----Original Message----- > From: redhat-list-bounces@xxxxxxxxxx > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Furnish, Trever G > Sent: Thursday, May 17, 2007 4:49 PM > To: General Red Hat Linux discussion list > Subject: RE: mirror > > Don't know anything about that particular hardware, but it > looks like it has a hardware raid controller -- can't you > just mirror using that? If so, that'll be your best > performance choice. The only headache there is that you will > also need some mechanism for knowing when drives behind the > raid controller fail, which usually means you're out of luck > unless the vendor has released Linux tools to notify you of > that stuff. HP provides such tools for all of their > supported hardware, no clue about IBM. > > You didn't mention the version of Linux you're using either. > The mirroring choices available differ depending on version. > In RHEL3 it's pretty much just md or some commercial package > as your choice, unless you want to replace lvm with lvm2 or > evfs. Md works fine. In RHEL4 and > RHEL5 you have lvm2 with mirroring as a choice, although for > all I know it may still just be implemented via md. > Mirroring the entire disk (including /, /boot, and /bin) can > be done with md, not sure about the other tools (probably can > be done with them too though). > > Some links: > http://fy.chalmers.se/~appro/linux/HOWTO-mirror-root.html > http://www.jukie.net/~bart/blog/20060410220525 > > > > -----Original Message----- > > From: redhat-list-bounces@xxxxxxxxxx > > [mailto:redhat-list-bounces@xxxxxxxxxx] On Behalf Of Mad Unix > > Sent: Thursday, May 17, 2007 6:08 AM > > To: General Red Hat Linux discussion list > > Subject: mirror > > > > am looking to mirror my internal disk to another disk > located on the > > machine test@linuxppc:~> df -kh > > Filesystem Size Used Avail Use% Mounted on > > /dev/sda3 131G 8.4G 116G 7% / > > /dev/sda2 31M 8.9M 20M 31% /boot > > none 930M 0 930M 0% /dev/shm > > > > my dmesg > > ----//------------------- > > SCSI subsystem initialized > > ipr: IBM Power RAID SCSI Device Driver version: 2.0.11.2 > (January 24, > > 2006) ipr 0000:d0:01.0: Found IOA with IRQ: 325 ipr 0000:d0:01.0: > > Starting IOA initialization sequence. > > ipr 0000:d0:01.0: Adapter firmware version: 0510005E ipr > > 0000:d0:01.0: IOA initialized. > > scsi0 : IBM 573E Storage Adapter > > Vendor: IBM H0 Model: HUS151414VL3800 Rev: S430 > > Type: Direct-Access ANSI SCSI revision: 04 > > SCSI device sda: 286748000 512-byte hdwr sectors (146815 MB) SCSI > > device sda: drive cache: write through SCSI device sda: > > 286748000 512-byte hdwr sectors (146815 MB) SCSI device sda: > > drive cache: write through > > sda: sda1 sda2 sda3 sda4 < sda5 > > > Attached scsi disk sda at scsi0, channel 1, id 5, lun 0 > > Vendor: IBM Model: VSBPD4E2 U4SCSI Rev: 7217 > > Type: Enclosure ANSI SCSI revision: 02 > > scsi: unknown device type 31 > > Vendor: IBM Model: 573E001 Rev: 0150 > > Type: Unknown ANSI SCSI revision: 00 > > ----------------------//----- > > > > How would you do the mirror? > > -- > > madunix > > -- > > redhat-list mailing list > > unsubscribe > mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > > https://www.redhat.com/mailman/listinfo/redhat-list > > > > -- > redhat-list mailing list > unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe > https://www.redhat.com/mailman/listinfo/redhat-list > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
