toasters July 2012

toasters@lists.teaparty.net

25 participants
22 discussions

ndmpcopy oddities
by Thomas Nail 10 Jul '12

10 Jul '12

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 And speaking of data migrations... I performed an ndmpcopy of a filesystem to move it off of a set of DS14 Mk1 shelves (72 GB FC drives, which are now end of support) to a newer set of DS14Mk4 shelves containing 300 GB FC drives. The problem is that after ndmpcopy has finished, the source and destination volume sizes are different: filer*> df -k old_vol Filesystem total used avail capacity Mounted on /vol/old_vol/ 547880960KB 401694484KB 146186476KB 73% /vol/old_vol/ filer*> df -k new_vol Filesystem total used avail capacity Mounted on /vol/new_vol/ 547880960KB 401639832KB 146241128KB 73% /vol/new_vol/ So we're looking at ~50 MB of difference between the two. After doing filesystem checks on both, I found that both contain the same number of files, all of which are equivalent in size. The directory structures are also equivalent, with one exception: one directory is 12KB on the source and 4KB on the destination. Another anomaly is that a 'df' of the filesystems on Solaris 10 show a difference of 16 files between the source and destination. /usr/SAG/db-backup (filer:/vol/new_vol/db-backup):292482200 blocks 19023148 files /mnt/old_vol (filer:/vol/old_vol/db-backup):292372920 blocks 19023132 files So, I know that ndmpcopy is a logical (not physical) copy of the volume, but how is that accounting for more files with fewer blocks? Is it an artifact of fragmentation and metadata changes in WAFL when the data is dumped? I don't have a good explanation for my customer, so I'm hoping someone here will have a quick and easy answer. Thanks, - -=Tom Nail -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ iEYEARECAAYFAk/8VYkACgkQH7E81Q7leo5frgCfbLd7vEcYPqELc0A/rCnWkMzL IcYAni/30uPVEAyntWvaTCjeBCnTjPmZ =nqZ5 -----END PGP SIGNATURE-----

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just checking if system is working
by Uddhav Regmi 10 Jul '12

10 Jul '12

Have not got any postings after 6/29 The last one was this -----Original Message----- From: toasters-bounces(a)teaparty.net [mailto:toasters-bounces@teaparty.net] On Behalf Of Dan Burkland Sent: Friday, June 29, 2012 8:58 AM To: toasters(a)teaparty.net Subject: Re: FAS2240 Twinax Support We have been using a pair of Nexus 5010s to connect our filers up via 10GbE. So far they have been working quite well, especially once we updated the code on them Regards, Dan

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toasters July 2012