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How to backup ZFS filesystems to files on USB drive?

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Operating Systems Solaris How to backup ZFS filesystems to files on USB drive?
# 22  
Old 02-20-2014
Zpool backup done but not know whether it is valid or not yet
Hi jlliagre,

The following backup command took days but still did not complete:

Code:
zfs send -R -p rpool@001 > /mnt/usbdrive/servername_sr02_rpool@001.snapshot1

I had to reset the server and found it to be around 16GB. It is being looked into by another person so I will let you know of the outcome.

Thanks,

George

---------- Post updated at 07:36 PM ---------- Previous update was at 06:15 PM ----------

Hi jlliagre,

I have successfully booted up the same servername_sr02_1 from another disk in BIOS thanks to my lucky start. As a result, I am back to square 1 and would like to do a zpool backup by creating a single zfs dump file so can you please detail the instruction on what syntax, orders switches.... Below is disk format listing in the meantime:

Code:
 
root@servernamesr02 # uname -a
SunOS servernamesr02 5.10 Generic_147441-09 i86pc i386 i86pc
root@servernamesr02 # df -h
Filesystem             size   used  avail capacity  Mounted on rpool/ROOT/servername_srs_2
                       228G   6.5G   204G     4%    /
/devices                 0K     0K     0K     0%    /devices
ctfs                     0K     0K     0K     0%    /system/contract
proc                     0K     0K     0K     0%    /proc
mnttab                   0K     0K     0K     0%    /etc/mnttab
swap                   8.6G   1.0M   8.6G     1%    /etc/svc/volatile
objfs                    0K     0K     0K     0%    /system/object
sharefs                  0K     0K     0K     0%    /etc/dfs/sharetab
/usr/lib/libc/libc_hwcap2.so.1
                       210G   6.5G   204G     4%    /lib/libc.so.1
fd                       0K     0K     0K     0%    /dev/fd
rpool/ROOT/servername_srs_2/var
                       228G   3.3G   204G     2%    /var
swap                   8.6G   1.6M   8.6G     1%    /tmp
swap                   8.6G   424K   8.6G     1%    /var/run
rpool/export           228G    32K   204G     1%    /export
rpool/export/home      228G   4.6M   204G     1%    /export/home
rpool                  228G    49K   204G     1%    /rpool
root@servernamesr02 # zpool status -v rpool
  pool: rpool
 state: ONLINE
 scan: resilvered 9.59G in 0h12m with 0 errors on Wed Mar 14 12:09:12 2012
config:
        NAME          STATE     READ WRITE CKSUM
        rpool         ONLINE       0     0     0
          mirror-0    ONLINE       0     0     0
            c1t1d0s0  ONLINE       0     0     0
            c1t0d0s0  ONLINE       0     0     0
errors: No known data errors
root@servernamesr02 # zfs list -r rpool
NAME                                            USED  AVAIL  REFER  MOUNTPOINT
rpool                                          24.6G   204G    49K  /rpool
rpool@001                                        30K      -    49K  -
rpool/ROOT                                     11.0G   204G    31K  legacy
rpool/ROOT@001                                     0      -    31K  -
rpool/ROOT/10                                  14.1M   204G  4.37G  /tmp/.liveupgrade.442.548/lu_zone_update.548
rpool/ROOT/10@001                               299K      -  4.37G  -
rpool/ROOT/10/var                              6.50M   204G  1011M  /tmp/.liveupgrade.442.548/lu_zone_update.548/var
rpool/ROOT/10/var@001                             1K      -  1011M  -
rpool/ROOT/base_srs_install                    38.2M   204G  4.48G  /tmp/.liveupgrade.442.548/lu_zone_update.548
rpool/ROOT/base_srs_install@001                 299K      -  4.48G  -
rpool/ROOT/base_srs_install/var                14.4M   204G  1.47G  /tmp/.liveupgrade.442.548/lu_zone_update.548/var
rpool/ROOT/base_srs_install/var@001               1K      -  1.47G  -
rpool/ROOT/servername_srs_1                        384M   204G  6.37G  /tmp/.liveupgrade.442.548/lu_zone_update.548
rpool/ROOT/servername_srs_1@001                   62.2M      -  6.37G  -
rpool/ROOT/servername_srs_1/var                    244M   204G  1.69G  /tmp/.liveupgrade.442.548/lu_zone_update.548/var
rpool/ROOT/servername_srs_1/var@001               10.5M      -  1.48G  -
rpool/ROOT/servername_srs_2                       10.5G   204G  6.47G  /
rpool/ROOT/servername_srs_2@base_srs_install      75.0M      -  4.37G  -
rpool/ROOT/servername_srs_2@servername_srs_1         71.3M      -  4.47G  -
rpool/ROOT/servername_srs_2@servername_srs_2         67.2M      -  6.37G  -
rpool/ROOT/servername_srs_2@001                   76.7M      -  6.38G  -
rpool/ROOT/servername_srs_2/var                   3.75G   204G  3.32G  /var
rpool/ROOT/servername_srs_2/var@base_srs_install  23.8M      -  1011M  -
rpool/ROOT/servername_srs_2/var@servername_srs_1     14.8M      -  1.46G  -
rpool/ROOT/servername_srs_2/var@servername_srs_2     34.7M      -  1.48G  -
rpool/ROOT/servername_srs_2/var@001               25.3M      -  3.33G  -
rpool/dump                                     1.00G   204G  1.00G  -
rpool/dump@001                                   16K      -  1.00G  -
rpool/export                                   4.84M   204G    32K  /export
rpool/export@001                                 18K      -    32K  -
rpool/export/home                              4.80M   204G  4.61M  /export/home
rpool/export/home@001                           194K      -  4.61M  -
rpool/swap                                     12.7G   212G  4.16G  -
rpool/swap@001                                     0      -  4.16G  -
root@servernamesr02 # format -e
Searching for disks...done
 
AVAILABLE DISK SELECTIONS:
       0. c1t0d0 <DEFAULT cyl 30397 alt 2 hd 255 sec 63>
          /pci@0,0/pci108e,534b@5/disk@0,0
       1. c1t1d0 <DEFAULT cyl 30397 alt 2 hd 255 sec 63>
          /pci@0,0/pci108e,534b@5/disk@1,0
       2. c2t0d0 <DEFAULT cyl 60797 alt 2 hd 255 sec 252>  usb-ext
          /pci@0,0/pci108e,534b@2,1/storage@7/disk@0,0
Specify disk (enter its number):2
Specify disk (enter its number)[0]: 2
selecting c2t0d0: usb-ext
[disk formatted]
partition> pr
Volume:  usb-ext
Current partition table (original):
Total disk cylinders available: 60797 + 2 (reserved cylinders)
Part      Tag    Flag     Cylinders         Size            Blocks
  0 unassigned    wm       0                0         (0/0/0)              0
  1 unassigned    wm       0                0         (0/0/0)              0
  2       root    wm       1 - 60796        1.82TB    (60796/0/0) 3906750960
  3 unassigned    wm       0                0         (0/0/0)              0
  4 unassigned    wm       0                0         (0/0/0)              0
  5 unassigned    wm       0                0         (0/0/0)              0
  6 unassigned    wm       0                0         (0/0/0)              0
  7 unassigned    wm       0                0         (0/0/0)              0
  8       boot    wu       0 -     0       31.38MB    (1/0/0)          64260

Many thanks again,
George
# 23  
Old 02-20-2014
Days to write 16 GB looks like a USB 1.1 transfer. I would recommend using something faster. You might also destroy the swap snapshot (4.16 GB) as there is no point doing a backup of it.

Finally, if you really want to keep trying to work out a ZFS backup/restore of your system despite the bad experience you had, please experiment with a test system running the same Solaris release and that you can rebuild from scratch until you are familiar and comfortable enough with the process.

You might also have a look to this document:
ZFS Troubleshooting Guide - Siwiki
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