[OpenIndiana-discuss] RAIDZ issue

[Thebest videos]

I've created 3disks as bootable disk, and remaining disks as raw disks.
Then I ran
Zpool create -o altroot=/mnt datapool raidz1 disk1 disk2 disk3 disk4 raidz1
disk5 disk6 disk7 disk8
Still getting same zfs I/o error


On Wed, Feb 17, 2021, 15:56 Toomas Soome via openindiana-discuss <
openindiana-discuss at openindiana.org> wrote:

> hi!
>
> From your screenshot, you do get 5 disks recognized (disk0 - disk4), that
> means, those are disks you can use for booting. It *may* be the limit is
> higher with UEFI boot.
>
> You can check the number of disks while booting from usb/cd, press esc to
> get out of boot menu, and enter: lsdev -v, loader will report only those
> disk devices which BIOS can see, and only those devices can be used for
> booting.
>
> Since you are writing to OI list (and not freebsd), there is another way
> to check; in illumos you can get list of BIOS accessible disks with:
>
> $ prtconf -v | grep biosdev
>         name='biosdev-0x83' type=byte items=588
>         name='biosdev-0x82' type=byte items=588
>         name='biosdev-0x81' type=byte items=588
>         name='biosdev-0x80' type=byte items=588
>
> in this example, the system does have 4 BIOS-visible disk devices, and
> incidentally those are all disks this system does have, and I have:
>
> tsoome at beastie:/code$ zpool status
>   pool: rpool
>  state: ONLINE
>   scan: resilvered 1,68T in 0 days 10:10:07 with 0 errors on Fri Oct 25
> 05:05:34 2019
> config:
>
>         NAME        STATE     READ WRITE CKSUM
>         rpool       ONLINE       0     0     0
>           raidz1-0  ONLINE       0     0     0
>             c3t0d0  ONLINE       0     0     0
>             c3t1d0  ONLINE       0     0     0
>             c3t3d0  ONLINE       0     0     0
>             c3t4d0  ONLINE       0     0     0
>
> errors: No known data errors
> tsoome at beastie:/code$
>
>
> Please note; in theory, if you have 5 visible disks, you could create boot
> pool by having those 5 disks for data + parity disks, but such
> configuration would not be advisable, because if one data disk will get an
> issue, then you can not boot (unless you swap around physical disks).
>
> Therefore, the suggestion would be to verify, how many disks your system
> BIOS or UEFI can see, and plan the boot pool accordingly.
>
> rgds,
> toomas
>
> > On 17. Feb 2021, at 11:26, Thebest videos <sri.chityala504 at gmail.com>
> wrote:
> >
> > Hi there,
> >
> > I'm facing one issue since long time.i.e., I'm trying to create raidz
> > configuration with multiple disks as below
> > Create RAIDZ for 4 disks each vdev in RAIDZ1/RAIDZ2 intotal 2 vdevs
> >
> > I'm running below commands running for each hard disk
> >
> > gpart create -s gpt ada0
> >
> > gpart add -a 4k -s 512K -t freebsd-boot ada0
> >
> > gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ada0
> >
> > gpart add -a 1m -s 2G -t freebsd-swap -l swap0 ada0
> >
> > gpart add -a 1m -t freebsd-zfs -l disk0 ada0
> >
> >
> > #RAIDZ creating
> >
> > zpool create -o altroot=/mnt datapool raidz2 ada0p3 ada1p3 ada2p3 ada3p3
> > raidz2 ada4p3 ada5p3 ada6p3 ada7p3
> >
> > zfs create -o mountpoint=/ -o canmount=noauto datapool/boot
> >
> > mount -t zfs datapool/boot /mnt
> >
> > mount_cd9660 /dev/cd0 /media
> >
> > cp -r /media/* /mnt/.
> >
> > zpool set bootfs=datapool/boot datapool
> >
> >
> > I've tried both RAIDZ1 and RAIDZ2 getting same issue has been attached
> >
> >
> > 2 attachments has attached screenshot 1 (17th feb) issue: when i create
> > with 2vdevs with 4 disks each vdev
> >
> > 2nd attachment (16th feb)issue : creating RAIDZ2 with 5 disks with each
> > vdev total 2vdevs in total
> >
> >
> > Kindly respond since i need to fix this issue anyway
> > <Screenshot 2021-02-17 at 11.20.11 AM.png><Screenshot 2021-02-16 at
> 5.58.31 PM.png>_______________________________________________
> > openindiana-discuss mailing list
> > openindiana-discuss at openindiana.org
> > https://openindiana.org/mailman/listinfo/openindiana-discuss
>
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