"git clone" executed as root on solaris 10 shreds UFS (it is possible to create hardlinks for directories as root under solaris)
- From
- Thomas Glanzmann <thomas@glanzmann.de>
- Date
- Jul 16, 2007, 10:08 UTC
- Message-ID
- <20070716100803.GA24036@cip.informatik.uni-erlangen.de>
Hello, when I call "git clone ~adglth0/work/scripts whatever" as user everything works as expected. As soon as I call this command as root it shreds ufs:
(s092942) [~] git version
git version 1.5.3.GIT
(s092942) [~] git clone ~adglth0/work/scripts nonroot
Initialized empty Git repository in /export/home/adglth0/nonroot/.git/
remote: Generating pack...
Done counting 220 objects.
Deltifying 220 objects...
2% (5/220) doneIndexing 220 objects...
100% (220/220) done20) donedonedone
Total 220 (delta 114), reused 181remote: (delta 88)
100% (220/220) done
Resolving 114 deltas...
100% (114/114) done
(s092942) [~] cd nonroot
./nonroot
(s092942) [~/nonroot] git status
# On branch master
nothing to commit (working directory clean)
(s092942) [~/nonroot] fg
sudo ${SHELL} --rcfile ${HOME}/.bash_profile (wd: ~)
(s092942) [~] git clone ~adglth0/work/scripts root
DO *NOT* RUN GIT AS ROOT clone /export/home/adglth0/work/scripts root
(s092942) [~] unalias git
(s092942) [~] git clone ~adglth0/work/scripts root
Initialized empty Git repository in /export/home/adglth0/root/.git/
remote: Generating pack...
remote: Done counting 220 objects.
Deltifying 220 objects...
3% (7/220) doneIndexing 220 objects...
100% (220/220) done20) done0) done
Total 220 (delta 114), reused 181 (delta 88)
100% (220/220) done
Resolving 114 deltas...
100% (114/114) done
(s092942) [~] cd root
(s092942) [~/root] git status
# On branch master
# Changed but not updated:
# (use "git add/rm <file>..." to update what will be committed)
#
# deleted: eclogic/acct_per_host.pl
# deleted: eclogic/check_3ware
# deleted: eclogic/check_ipmi.pl
# deleted: eclogic/check_load.pl
# deleted: eclogic/create_nagios_config.pl
# deleted: eclogic/mailrelay/config-2.6.20
# deleted: eclogic/mailrelay/interfaces
# deleted: eclogic/on_all_hosts.pl
# deleted: lifebook/kernel-config
# deleted: s017241/config-2.6.20
# deleted: s017241/firewall
# deleted: s017241/siemens.conf
# deleted: siemens/aliasupdate-tg
# deleted: siemens/check_raid.sh
# deleted: siemens/create_nagios_config.pl
# deleted: siemens/crontab_client
# deleted: siemens/deploy
# deleted: siemens/generate_password.pl.gpg
# deleted: siemens/mail_verrechnung.pl
# deleted: siemens/oracle_beispiel_client.pl
# deleted: siemens/sar_deploy.pl
# deleted: siemens/t3_check_via_telnet.pl
# deleted: thinkpad/config-2.6.20
# deleted: thinkpad/fglrx.patch
# deleted: thinkpad/network-please
# deleted: thinkpad/xorg/build
# deleted: webfarm/config-2.6.20
#
no changes added to commit (use "git add" and/or "git commit -a")
(s092942) [~/root] git checkout -f HEAD
(s092942) [~/root] git status
# On branch master
# Changed but not updated:
# (use "git add/rm <file>..." to update what will be committed)
#
# deleted: eclogic/acct_per_host.pl
# deleted: eclogic/check_3ware
# deleted: eclogic/check_ipmi.pl
# deleted: eclogic/check_load.pl
# deleted: eclogic/create_nagios_config.pl
# deleted: eclogic/mailrelay/config-2.6.20
# deleted: eclogic/mailrelay/interfaces
# deleted: eclogic/sms.pl
# deleted: lifebook/network-please
# deleted: s017241/config-2.6.20
# deleted: s017241/firewall
# deleted: s017241/xorg.conf
# deleted: siemens/aliasupdate-tg
# deleted: siemens/check_raid.sh
# deleted: siemens/create_nagios_config.pl
# deleted: siemens/crontab_client
# deleted: siemens/deploy
# deleted: siemens/generate_password.pl.gpg
# deleted: siemens/mail_verrechnung.pl
# deleted: siemens/oracle_beispiel_client.pl
# deleted: siemens/sar_deploy.pl
# deleted: siemens/tryserver.sh
# deleted: thinkpad/config-2.6.20
# deleted: thinkpad/fglrx.patch
# deleted: thinkpad/network-please
# deleted: thinkpad/xorg/cleanup
# deleted: webfarm/unsplit.pl
#
no changes added to commit (use "git add" and/or "git commit -a")
(s092942) [~/root] ls
eclogic/ leo* lifebook/ s017241/ siemens/ thinkpad/ webfarm/
(s092942) [~/root] ls siemens/
t3_check_via_telnet.pl*
(s092942) [~/root] cd ..
(s092942) [~] rm -rf root/
rm: Unable to remove directory root/: File exists
(s092942) [~] find root/
root/
(s092942) [~] ls -al root/
total 6
drwxr-xr-x 56 root root 512 Jul 16 11:48 ./
drwxr-xr-x 17 adglth0 root 1536 Jul 16 11:48 ../
(s092942) [~] df -h .
Filesystem size used avail capacity Mounted on
/dev/dsk/c0t0d0s7 75G 9.0G 65G 13% /export/home
(s092942) [~] ls -ali root/
total 6
13657 drwxr-xr-x 56 root root 512 Jul 16 11:48 ./
5829 drwxr-xr-x 17 adglth0 root 1536 Jul 16 11:48 ../
(s092942) [~] gfind /export/home -xdev -inum 13657
/export/home/adglth0/root
(s092942) [~]A few notes and observations I did. Linux _does_ not allow userland to create hardlinks for directories which makes totally sense. Solaris does allow the _root_ user to allow hardlinks for directories. There is even a command that makes that possible:
(faui04a) [/var/tmp] mkdir test
(faui04a) [/var/tmp] /usr/xpg4/bin/link test bla
(faui04a) [/var/tmp] ls -ali
total 13
1639 drwxrwxrwt 4 root sys 9216 Jul 16 11:13 ./
4 drwxr-xr-x 48 root sys 1024 Jan 1 2007 ../
238939 drwx--x--x 3 snalwuer icipguru 512 Jul 5 19:08 1071895580/
238945 drwxr-xr-x 3 root root 512 Jul 16 11:11 bla/
238945 drwxr-xr-x 3 root root 512 Jul 16 11:11 test/
(faui04a) [/var/tmp] find . -inum 238945Whatever. My first impression was that the filesystem of the solaris is broken. So I fscked it. And guess what it corrected the error. But after the reboot I tried it again and you see the result above. So my guess is that git calls the link system call in a way Solaris thinks it should itself shoot in the head. This also happens with _remote_ clones as root:
(s092942) [~] git clone adglth0@157.163.208.106:/home/adglth0/work/scripts second_test_as_root
Initialized empty Git repository in /export/home/adglth0/second_test_as_root/.git/
The authenticity of host '157.163.208.106 (157.163.208.106)' can't be established.
RSA key fingerprint is 72:27:be:82:f7:71:e5:23:a6:b6:57:a9:11:dd:26:26.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '157.163.208.106' (RSA) to the list of known hosts.
remote: Generating pack...
remote: Done counting 220 objects.
remote: Deltifying 220 objects...
remote: 100% (220/220) done
Indexing 220 objects...
remote: Total 220 (delta 115), reused 37 (delta 9)
100% (220/220) done
Resolving 115 deltas...
100% (115/115) done
(s092942) [~] cd second_test_as_root/
./second_test_as_root/
(s092942) [~/second_test_as_root] git status
# On branch master
# Changed but not updated:
# (use "git add/rm <file>..." to update what will be committed)
#
# deleted: eclogic/acct_per_host.pl
# deleted: eclogic/check_3ware
# deleted: eclogic/check_ipmi.pl
# deleted: eclogic/check_load.pl
# deleted: eclogic/create_nagios_config.pl
# deleted: eclogic/mailrelay/config-2.6.20
# deleted: eclogic/mailrelay/interfaces
# deleted: eclogic/on_all_hosts.pl
# deleted: lifebook/kernel-config
# deleted: s017241/config-2.6.20
# deleted: s017241/firewall
# deleted: s017241/siemens.conf
# deleted: siemens/aliasupdate-tg
# deleted: siemens/check_raid.sh
# deleted: siemens/create_nagios_config.pl
# deleted: siemens/crontab_client
# deleted: siemens/deploy
# deleted: siemens/generate_password.pl.gpg
# deleted: siemens/mail_verrechnung.pl
# deleted: siemens/oracle_beispiel_client.pl
# deleted: siemens/sar_deploy.pl
# deleted: siemens/t3_check_via_telnet.pl
# deleted: thinkpad/config-2.6.20
# deleted: thinkpad/fglrx.patch
# deleted: thinkpad/network-please
# deleted: thinkpad/xorg/build
# deleted: webfarm/config-2.6.20
#
no changes added to commit (use "git add" and/or "git commit -a")
(s092942) [~/second_test_as_root] uname -a
SunOS s092942 5.10 Generic_118833-17 sun4u sparc SUNW,Sun-Blade-100So has anyone a idea what is wrong. I have shareded a second machine in a complete different domain. With a complete different git version. Same thing. So it is not the hardware and not the specific git version and not the Solaris version:
(faui04a) [/var/tmp] git clone ~sithglan/work/sc
screen/ scripts/ scripts_ccbank_what_the_hell/
(faui04a) [/var/tmp] git clone ~sithglan/work/repositories/
private/ public/
(faui04a) [/var/tmp] git clone ~sithglan/work/repositories/public/
blastwave.git/ bs.git/ easix.git/ mutt.git/ nzb.git/ ra.git/ watchdog.git/
(faui04a) [/var/tmp] git clone ~sithglan/work/repositories/public/easix.git/
DO *NOT* RUN GIT AS ROOT clone /home/cip/adm/sithglan/work/repositories/public/easix.git/
(faui04a) [/var/tmp] unalias git
(faui04a) [/var/tmp] git clone ~sithglan/work/repositories/public/easix.git/
Initialized empty Git repository in /var/tmp/easix/.git/
remote: Generating pack...
remote: Done counting 317 objects.
remote: Deltifying 317 objects...
remote: emote: 317/317) done: ) done17) done
Indexing 317 objects...
remote: Total 317 (delta 182), reused 278 (delta 157)
100% (317/317) done
Resolving 182 deltas...
100% (182/182) done (faui04a) [/var/tmp] cd easix/
./easix/
(faui04a) [/var/tmp/easix] git status
# On branch master
# Changed but not updated:
# (use "git add/rm <file>..." to update what will be committed)
#
# deleted: profiles/icpc
# deleted: profiles/sithglan
# deleted: sources/boot.msg
# deleted: sources/busybox-config
# deleted: sources/config
# deleted: sources/easix.logo.16
# deleted: sources/easixdm
# deleted: sources/f2
# deleted: sources/home-faumachine.tar.gz
# deleted: sources/home-icpc.tar.gz
# deleted: sources/home-simigern.tar.gz
# deleted: sources/home-sithglan.tar.gz
# deleted: sources/home-sitowert.tar.gz
# deleted: sources/linuxrc
# deleted: sources/rc.local
#
no changes added to commit (use "git add" and/or "git commit -a")
(faui04a) [/var/tmp/easix] cd ..
(faui04a) [/var/tmp] rm -rf easix
rm: Unable to remove directory easix: File exists
(faui04a) [/var/tmp] ls -ali easix/
total 10
238947 drwxr-xr-x 17 root root 512 Jul 16 12:01 ./
1639 drwxrwxrwt 5 root sys 9216 Jul 16 12:01 ../
(faui04a) [/var/tmp] git version
git version 1.5.2
(faui04a) [/var/tmp] uname -a
SunOS faui04a 5.10 Generic_118833-24 sun4u sparc SUNW,Sun-Fire-280R[ I am off the net for 30 mintues ... eating ]
Thomas