Date: Sat, 18 Mar 2006 11:03:50 +0000 From: Ceri Davies <ceri@submonkey.net> To: FreeBSD-gnats-submit@FreeBSD.org Subject: bin/94635: snapinfo/libufs only works for disk-backed filesystems Message-ID: <E1FKZDq-000N7Y-5c@shrike.submonkey.net> Resent-Message-ID: <200603181110.k2IBAAbY048231@freefall.freebsd.org>
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>Number: 94635 >Category: bin >Synopsis: snapinfo/libufs only works for disk-backed filesystems >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Mar 18 11:10:10 GMT 2006 >Closed-Date: >Last-Modified: >Originator: Ceri Davies >Release: FreeBSD 6.1-PRERELEASE i386 >Organization: Submonkey >Environment: System: FreeBSD shrike.private.submonkey.net 6.1-PRERELEASE FreeBSD 6.1-PRERELEASE #30: Fri Mar 17 16:58:24 GMT 2006 root@shrike.private.submonkey.net:/usr/obj/usr/src/sys/SHRIKE i386 >Description: My mounted filesystems are currently: Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/ad0s1a 507630 110934 356086 24% / devfs 1 1 0 100% /dev /dev/md0 253678 558 232826 0% /tmp /dev/ad0s1f 8122126 2467276 5005080 33% /usr /dev/mirror/userhome 25385514 9353432 14001242 40% /usr/home /dev/ad0s1e 4058062 418004 3437156 11% /usr/local/pgsql /dev/ad1s1a 1190120 873600 257016 77% /usr/ports /dev/ad1s1f 16582478 4024530 11728826 26% /var /dev/ad0s1g 4058062 4 3733414 0% /spare /dev/stripe/werehaus 65053706 29061010 32740012 47% /a devfs 1 1 0 100% /var/named/dev /dev/md1 25385514 8562932 14791742 37% /snap/20060318-005900/home /dev/md2 65053706 25343222 36457800 41% /snap/20060318-005900/a /dev/md3 507630 52306 414714 11% /snap/20060318-005900/slash /dev/md4 253678 104 233280 0% /snap/20060318-005900/tmp The recently added snapinfo(8) returns: # snapinfo -a ufs_disk_fillout: No such file or directory ufs_disk_fillout: Unknown error: 0 ufs_disk_fillout: Unknown error: 0 ufs_disk_fillout: Unknown error: 0 ufs_disk_fillout: Unknown error: 0 /.snap/20060314-005900 /.snap/20060315-005901 /.snap/20060316-005900 /.snap/20060317-005900 /.snap/20060318-005900 /usr/home/.snap/20060314-005900 /usr/home/.snap/20060315-005901 /usr/home/.snap/20060316-005900 /usr/home/.snap/20060317-005900 /usr/home/.snap/20060318-005900 /a/.snap/20060314-005900 /a/.snap/20060315-005901 /a/.snap/20060316-005900 /a/.snap/20060317-005900 /a/.snap/20060318-005900 The first three entries are from /dev/md0 through /dev/md4 in that order, although I'm not sure why the first error is "No such file or directory", since /dev/md0 does exist. Verbose examples for both failure modes: # snapinfo -v /tmp ufs_disk_fillout: No such file or directory (null) mounted on no snapshots found # snapinfo -v /snap/20060318-005900/a ufs_disk_fillout: Unknown error: 0 /snap/20060318-005900/a mounted on no snapshots found >How-To-Repeat: Mount an md backed filesystem, and run snapinfo against it. >Fix: Fix libufs to return something useable in the non-disk case? >Release-Note: >Audit-Trail: >Unformatted:
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