acl_xattr vs acl_tdb
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From: Gary Greene on 27 Mar 2010 11:40 On Mar 26, 2010, at 1:26 AM, Adrian Berlin wrote: Hi! > Does anyone know how many ACLs can be stored on file system (xfs) using acl_xattr module and in file file_ntacls.tdb? > > Best regards > /Adrian Berlin > > > -- > You Rock! Your E-Mail Should Too! Signup Now at Rock.com and get 250MB of Storage! > > http://webmail.rock.com/signup/ > -- > To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/options/samba > If I recall correctly, the POSIX ACLs only allow 25 ACLs per file, though this might be based off old information I read about a while back.... -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Harry Jede on 28 Mar 2010 10:10 On Freitag, 26. März 2010 wrote Adrian Berlin: > Hi! > Does anyone know how many ACLs can be stored on file system (xfs) > using acl_xattr module and in file file_ntacls.tdb? The docs say that xfs uses 64k. A small test gives me total other numbers :-( . xfs can store 21 to 26 ACEs. It depends on the size of gidnumber. ext3 may store 503 to 513 ACEs, also depending on the size of gidnumber. The test bed: fresh created /home partitions with: mkfs.xfs -f /dev/hda6 for xfs, and mkfs.ext3 /dev/hda6 for ext3. only one directory: rmdir /home/dir/ ;mkdir /home/dir/ and a small shell script, which add ACEs: /root/acl-test.sh: #!/bin/sh -ex G=2200000000 #G=10 while : do G=$(( $G + 1 )) setfacl -m g:"$G":rwx /home/dir done OS is Debian Lenny: debian:/# cat /etc/debian_version 5.0.4 debian:/# uname -r 2.6.26-2-amd64 getfacl & setfacl has version: 2.2.47 Other extended attributes may reduce the number of avaiable ACEs. Conclusion: ext3 is a better choice then xfs, at least for Debian Lenny. I have not tested any special tuning options for ext3 or xfs. > > Best regards > /Adrian Berlin -- Gruss Harry Jede -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Miguel Medalha on 28 Mar 2010 16:30 > A small test gives me total other numbers :-( . > > xfs can store 21 to 26 ACEs. It depends on the size of gidnumber. > ext3 may store 503 to 513 ACEs, also depending on the size of gidnumber. > > The test bed: > fresh created /home partitions with: > mkfs.xfs -f /dev/hda6 > for xfs, and > mkfs.ext3 /dev/hda6 > for ext3. > > only one directory: > rmdir /home/dir/ ;mkdir /home/dir/ > > and a small shell script, which add ACEs: > /root/acl-test.sh: > > #!/bin/sh -ex > G=2200000000 > #G=10 > > while : > do > G=$(( $G + 1 )) > > setfacl -m g:"$G":rwx /home/dir > > done > > > > OS is Debian Lenny: > debian:/# cat /etc/debian_version > 5.0.4 > debian:/# uname -r > 2.6.26-2-amd64 > > getfacl& setfacl has version: 2.2.47 > > Other extended attributes may reduce the number of avaiable ACEs. > > Conclusion: > ext3 is a better choice then xfs, at least for Debian Lenny. > > I have not tested any special tuning options for ext3 or xfs. Thank you very much for that information! -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba
From: Adrian Berlin on 29 Mar 2010 08:20
Thanks everyone for answers! 21 - 26 ACLs in XFS filesystem is just for POSIX ACL or extended too? Best regards /Adrian Berlin > ----- Original Message ----- > From: Miguel Medalha <miguelmedalha(a)sapo.pt> > To: Harry Jede <walk2sun(a)arcor.de> > Cc: samba(a)lists.samba.org > Subject: Re: [Samba] acl_xattr vs acl_tdb > Date: Sun, 28 Mar 2010 21:24:21 +0100 > > > > > A small test gives me total other numbers :-( . > > > > xfs can store 21 to 26 ACEs. It depends on the size of gidnumber. > > ext3 may store 503 to 513 ACEs, also depending on the size of gidnumber. > > > > The test bed: > > fresh created /home partitions with: > > mkfs.xfs -f /dev/hda6 > > for xfs, and > > mkfs.ext3 /dev/hda6 > > for ext3. > > > > only one directory: > > rmdir /home/dir/ ;mkdir /home/dir/ > > > > and a small shell script, which add ACEs: > > /root/acl-test.sh: > > > > #!/bin/sh -ex > > G=2200000000 > > #G=10 > > > > while : > > do > > G=$(( $G + 1 )) > > > > setfacl -m g:"$G":rwx /home/dir > > > > done > > > > > > > > OS is Debian Lenny: > > debian:/# cat /etc/debian_version > > 5.0.4 > > debian:/# uname -r > > 2.6.26-2-amd64 > > > > getfacl& setfacl has version: 2.2.47 > > > > Other extended attributes may reduce the number of avaiable ACEs. > > > > Conclusion: > > ext3 is a better choice then xfs, at least for Debian Lenny. > > > > I have not tested any special tuning options for ext3 or xfs. > > Thank you very much for that information! > -- To unsubscribe from this list go to the following URL and read the > instructions: https://lists.samba.org/mailman/options/samba > -- You Rock! Your E-Mail Should Too! Signup Now at Rock.com and get 250MB of Storage! http://webmail.rock.com/signup/ -- To unsubscribe from this list go to the following URL and read the instructions: https://lists.samba.org/mailman/options/samba |