man/man8/zpool-attach.8

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  30 .Dd May 15, 2020
  31 .Dt ZPOOL-ATTACH 8
  32 .Os Linux
  33 .Sh NAME
  34 .Nm zpool Ns Pf - Cm attach
  35 .Nd Attach a new device to an existing ZFS virtual device (vdev).
  36 .Sh SYNOPSIS
  37 .Nm
  38 .Cm attach
  39 .Op Fl fsw
  40 .Oo Fl o Ar property Ns = Ns Ar value Oc
  41 .Ar pool device new_device
  42 .Sh DESCRIPTION
  43 .Bl -tag -width Ds
  44 .It Xo
  45 .Nm
  46 .Cm attach
  47 .Op Fl fsw
  48 .Oo Fl o Ar property Ns = Ns Ar value Oc
  49 .Ar pool device new_device
  50 .Xc
  51 Attaches
  52 .Ar new_device
  53 to the existing
  54 .Ar device .
  55 The existing device cannot be part of a raidz configuration.
  56 If
  57 .Ar device
  58 is not currently part of a mirrored configuration,
  59 .Ar device
  60 automatically transforms into a two-way mirror of
  61 .Ar device
  62 and
  63 .Ar new_device .
  64 If
  65 .Ar device
  66 is part of a two-way mirror, attaching
  67 .Ar new_device
  68 creates a three-way mirror, and so on.
  69 In either case,
  70 .Ar new_device
  71 begins to resilver immediately and any running scrub is cancelled.
  72 .Bl -tag -width Ds
  73 .It Fl f
  74 Forces use of
  75 .Ar new_device ,
  76 even if it appears to be in use.
  77 Not all devices can be overridden in this manner.
  78 .It Fl o Ar property Ns = Ns Ar value
  79 Sets the given pool properties. See the
  80 .Xr zpoolprops 8
  81 manual page for a list of valid properties that can be set. The only property
  82 supported at the moment is ashift.
  83 .It Fl s
  84 The
  85 .Ar new_device
  86 is reconstructed sequentially to restore redundancy as quickly as possible.
  87 Checksums are not verfied during sequential reconstruction so a scrub is
  88 started when the resilver completes.
  89 Sequential reconstruction is not supported for raidz configurations.
  90 .It Fl w
  91 Waits until
  92 .Ar new_device
  93 has finished resilvering before returning.
  94 .El
  95 .El
  96 .Sh SEE ALSO
  97 .Xr zpool-detach 8 ,
  98 .Xr zpool-add 8 ,
  99 .Xr zpool-import 8 ,
 100 .Xr zpool-initialize 8 ,
 101 .Xr zpool-online 8 ,
 102 .Xr zpool-replace 8 ,
 103 .Xr zpool-resilver 8