FAQs

Hardware (2)
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ZFS Cheatsheet
List Pool
zpool list
Show detailed health status
zpool status rpool
Show all properties for the pool
zpool get all rpool
Show I/O Stats
zpool iostat -v rpool
List datasets

root@pve:~# zfs list
NAME USED AVAIL REFER MOUNTPOINT
rpool 20.7G 1.73T 139K /rpool
rpool/ROOT 6.12G 1.73T 128K /rpool/ROOT
rpool/ROOT/pve-1 6.12G 1.73T 6.12G /
rpool/data 14.6G 1.73T 128K /rpool/data
rpool/data/vm-100-disk-0 10.7G 1.73T 10.7G -
rpool/data/vm-101-disk-0 3.85G 1.73T 3.85G -
Replacing a failed disk

root@pve:~# zpool status -v
  pool: rpool
 state: ONLINE
  scan: resilvered 143G in 15h22m with 0 errors on Fri Oct 14 10:59:46 2016
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       ONLINE       0     0     0
          raidz1-0  ONLINE       0     0     0
            sda2    ONLINE       0     0     0
            sdb2    ONLINE       0     0     0
            sdc2    ONLINE       0     0     0

errors: No known data errors
Assuming the failing disk is /dev/sdb2, first take the disk offline: 

root@pve:~# zpool offline rpool /dev/sdb2
root@pve:~# zpool status -v              
  pool: rpool
 state: DEGRADED
status: One or more devices has been taken offline by the administrator.
        Sufficient replicas exist for the pool to continue functioning in a
        degraded state.
action: Online the device using 'zpool online' or replace the device with
        'zpool replace'.
  scan: resilvered 143G in 15h22m with 0 errors on Fri Oct 14 10:59:46 2016
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       DEGRADED     0     0     0
          raidz1-0  DEGRADED     0     0     0
            sda2    ONLINE       0     0     0
            sdb2    OFFLINE      0     0     0
            sdc2    ONLINE       0     0     0

errors: No known data errors
replace the physical disk & clone a working disk’s partition tables, copy the GRUB boot partition, copy the MBR, and rerandomize the GUIDs before letting ZFS at the disk again. 

root@pve:~# sgdisk --replicate=/dev/sdb /dev/sda
root@pve:~# sgdisk --randomize-guids /dev/sdb
root@pve:~# grub-install /dev/sdb
Replace the disk in the ZFS pool 
root@pve:~# zpool replace rpool /dev/sdb2
Check Status: 

root@pve:~# zpool status -v
  pool: rpool
 state: DEGRADED
status: One or more devices is currently being resilvered.  The pool will
	continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Mon Oct 17 13:02:00 2016
    147M scanned out of 298G at 4.46M/s, 19h1m to go
    47.3M resilvered, 0.05% done
config:

	NAME             STATE     READ WRITE CKSUM
	rpool            DEGRADED     0     0     0
	  raidz1-0       DEGRADED     0     0     0
	    sda2         ONLINE       0     0     0
	    replacing-1  OFFLINE      0     0     0
	      old        OFFLINE      0     0     0
	      sdb2       ONLINE       0     0     0  (resilvering)
	    sdc2         ONLINE       0     0     0

errors: No known data errors
Add Cache to existing pool
zpool add -f rpool cache sdc
Kategorien: Hardware, Linux
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LSI RAID failed drive ersetzen unter Linux mit storcli

Anzeigen aller Drives:
./storcli64 /c0 show
Output (als Beispiel):
——————————————————————————
EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp
——————————————————————————
252:0 8 Onln 0 931.0 GB SATA SSD N N 512B Samsung SSD 850 EVO 1TB U
252:1 9 Onln 0 931.0 GB SATA SSD N N 512B Samsung SSD 850 EVO 1TB U

Drive “offline” setzen:
./storcli64 /c0 /e252 /s1 set offline

Drive als “missing” setzen:
./storcli64 /c0 /e252 /s1 set missing

Drive spindown zum entfernen:
./storcli64 /c0 /e252 /s1 spindown

Danach Disk/SSD ersetzen. Der Rebuidl startet automatisch. Den Status kann man mittels folgendem Befehl kontrollieren:
./storcli64 /c0 /eall /sall show rebuild

Beispiel output:
———————————————————-
Drive-ID Progress% Status Estimated Time Left
———————————————————-
/c0/e252/s0 – Not in progress –
/c0/e252/s1 46 In progress –

Kategorien: Hardware, Linux
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Linux (2)
m
ZFS Cheatsheet
List Pool
zpool list
Show detailed health status
zpool status rpool
Show all properties for the pool
zpool get all rpool
Show I/O Stats
zpool iostat -v rpool
List datasets

root@pve:~# zfs list
NAME USED AVAIL REFER MOUNTPOINT
rpool 20.7G 1.73T 139K /rpool
rpool/ROOT 6.12G 1.73T 128K /rpool/ROOT
rpool/ROOT/pve-1 6.12G 1.73T 6.12G /
rpool/data 14.6G 1.73T 128K /rpool/data
rpool/data/vm-100-disk-0 10.7G 1.73T 10.7G -
rpool/data/vm-101-disk-0 3.85G 1.73T 3.85G -
Replacing a failed disk

root@pve:~# zpool status -v
  pool: rpool
 state: ONLINE
  scan: resilvered 143G in 15h22m with 0 errors on Fri Oct 14 10:59:46 2016
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       ONLINE       0     0     0
          raidz1-0  ONLINE       0     0     0
            sda2    ONLINE       0     0     0
            sdb2    ONLINE       0     0     0
            sdc2    ONLINE       0     0     0

errors: No known data errors

Assuming the failing disk is /dev/sdb2, first take the disk offline:


root@pve:~# zpool offline rpool /dev/sdb2
root@pve:~# zpool status -v              
  pool: rpool
 state: DEGRADED
status: One or more devices has been taken offline by the administrator.
        Sufficient replicas exist for the pool to continue functioning in a
        degraded state.
action: Online the device using 'zpool online' or replace the device with
        'zpool replace'.
  scan: resilvered 143G in 15h22m with 0 errors on Fri Oct 14 10:59:46 2016
config:

        NAME        STATE     READ WRITE CKSUM
        rpool       DEGRADED     0     0     0
          raidz1-0  DEGRADED     0     0     0
            sda2    ONLINE       0     0     0
            sdb2    OFFLINE      0     0     0
            sdc2    ONLINE       0     0     0

errors: No known data errors

replace the physical disk & clone a working disk’s partition tables, copy the GRUB boot partition, copy the MBR, and rerandomize the GUIDs before letting ZFS at the disk again.


root@pve:~# sgdisk --replicate=/dev/sdb /dev/sda
root@pve:~# sgdisk --randomize-guids /dev/sdb
root@pve:~# grub-install /dev/sdb

Replace the disk in the ZFS pool

root@pve:~# zpool replace rpool /dev/sdb2

Check Status:


root@pve:~# zpool status -v
  pool: rpool
 state: DEGRADED
status: One or more devices is currently being resilvered.  The pool will
	continue to function, possibly in a degraded state.
action: Wait for the resilver to complete.
  scan: resilver in progress since Mon Oct 17 13:02:00 2016
    147M scanned out of 298G at 4.46M/s, 19h1m to go
    47.3M resilvered, 0.05% done
config:

	NAME             STATE     READ WRITE CKSUM
	rpool            DEGRADED     0     0     0
	  raidz1-0       DEGRADED     0     0     0
	    sda2         ONLINE       0     0     0
	    replacing-1  OFFLINE      0     0     0
	      old        OFFLINE      0     0     0
	      sdb2       ONLINE       0     0     0  (resilvering)
	    sdc2         ONLINE       0     0     0

errors: No known data errors
Add Cache to existing pool
zpool add -f rpool cache sdc
Kategorien: Hardware, Linux
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m
LSI RAID failed drive ersetzen unter Linux mit storcli

Anzeigen aller Drives:
./storcli64 /c0 show
Output (als Beispiel):
——————————————————————————
EID:Slt DID State DG Size Intf Med SED PI SeSz Model Sp
——————————————————————————
252:0 8 Onln 0 931.0 GB SATA SSD N N 512B Samsung SSD 850 EVO 1TB U
252:1 9 Onln 0 931.0 GB SATA SSD N N 512B Samsung SSD 850 EVO 1TB U

Drive “offline” setzen:
./storcli64 /c0 /e252 /s1 set offline

Drive als “missing” setzen:
./storcli64 /c0 /e252 /s1 set missing

Drive spindown zum entfernen:
./storcli64 /c0 /e252 /s1 spindown

Danach Disk/SSD ersetzen. Der Rebuidl startet automatisch. Den Status kann man mittels folgendem Befehl kontrollieren:
./storcli64 /c0 /eall /sall show rebuild

Beispiel output:
———————————————————-
Drive-ID Progress% Status Estimated Time Left
———————————————————-
/c0/e252/s0 – Not in progress –
/c0/e252/s1 46 In progress –

Kategorien: Hardware, Linux
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