Bug 151104

Summary:	mksnap_ffs(8) should mention 20 snapshot limit on UFS
Product:	Documentation	Reporter:	Aldis Berjoza <aldis>
Component:	Books & Articles	Assignee:	Giorgos Keramidas <keramida>
Status:	Closed FIXED
Severity:	Affects Only Me
Priority:	Normal
Version:	Latest
Hardware:	Any
OS:	Any

Description Aldis Berjoza 2010-09-30 09:00:10 UTC

mksnap_ffs(8) should mention 20 snapshot limit on UFS to avoid confusion for new users

Comment 1 Alexander Best freebsd_committer

2010-09-30 19:51:44 UTC

+1 on this one. also imo mount(8) should also have this information, since a
lot of users use `mount -u -o snapshot /var/snapshot/snap1 /var` (as described
in sys/ufs/ffs/README.snapshot) rather than mksnap_ffs(8).

cheers.
alex

-- 
a13x

Comment 2 dfilter service freebsd_committer

2011-02-15 07:25:59 UTC

Author: keramida (doc committer)
Date: Tue Feb 15 07:25:54 2011
New Revision: 218700
URL: http://svn.freebsd.org/changeset/base/218700

Log:
  Note that a UFS filesystem can have up to 20 active snapshots.
  
  PR:		docs/151104
  Submitted by:	Aldis Berjoza <aldis@bsdroot.lv>
  MFC after:	3 days

Modified:
  head/sbin/mksnap_ffs/mksnap_ffs.8

Modified: head/sbin/mksnap_ffs/mksnap_ffs.8
==============================================================================
--- head/sbin/mksnap_ffs/mksnap_ffs.8	Tue Feb 15 07:16:27 2011	(r218699)
+++ head/sbin/mksnap_ffs/mksnap_ffs.8	Tue Feb 15 07:25:54 2011	(r218700)
@@ -34,7 +34,7 @@
 .\"
 .\" $FreeBSD$
 .\"
-.Dd May 29, 2009
+.Dd February 14, 2011
 .Dt MKSNAP_FFS 8
 .Os
 .Sh NAME
@@ -79,3 +79,12 @@ utility first appeared in
 .Sh CAVEATS
 The disk full situation is not handled gracefully and may
 lead to a system panic when no free blocks are found.
+.Pp
+Every filesystem can have only up to 20 active snapshots.
+When this limit is reached, attempting to create more snapshots
+fails with
+.Er ENOSPC ,
+and
+.Nm
+reports that it is
+.Dq out of space .
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Comment 3 Giorgos Keramidas freebsd_committer

2011-02-15 07:26:45 UTC

State Changed
From-To: open->patched

Fixed in /head at rev 218700.

Comment 4 Giorgos Keramidas freebsd_committer

2011-02-15 07:26:45 UTC

Responsible Changed
From-To: freebsd-doc->keramida

I'll take care of MFCing this.

Comment 5 Eitan Adler freebsd_committer

2013-03-15 23:22:52 UTC

State Changed
From-To: patched->closed

MFCed/fixed by now or it will never be MFCed