Details
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Bug
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Resolution: Fixed
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Major
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Lustre 2.7.0
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3
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17384
Description
# echo XXX > f0 # lfs hsm_archive f0 # lfs hsm_state f0 f0: (0x00000009) exists archived, archive_id:1 # lfs hsm_release f0 # lfs hsm_state f0 f0: (0x0000000d) released exists archived, archive_id:1 # tar --xattr -cf /tmp/f0.tar f0 tar: f0: file changed as we read it # rm f0 # tar --xattr -xf /tmp/f0.tar f0 tar: f0: Cannot write: No data available tar: Exiting with failure status due to previous errors # echo $? 2 # ls f0 # cat f0 cat: f0: No data available
It does not matter if --xattr is used during extraction.
# rm f0 # tar -xf /tmp/f0.tar f0 tar: f0: Cannot write: No data available tar: Exiting with failure status due to previous errors # ls f0 # cat f0 cat: f0: No data available
Extraction is creating the file and giving it a trusted.lov xattr which has a released pattern. From strace:
mknod("f0", 0600) = 0
setxattr("f0", "trusted.hsm", "\x00\x00\x00\x00\x0d\x00\x00\x00\x01\x00\x00\x00\x00\x00\x0
0\x00\x15\x00\x00\x00\x01\x00\x00\x00", 24, 0) = 0
setxattr("f0", "trusted.link", "\xdf\xf1\xea\x11\x01\x00\x00\x00,\x00\x00\x00\x00\x00\x00\
x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x14\x00\x00\x00\x02\x00\x00\x00\x07\x00\x00\x00\x0
1\x00\x00\x00\x00f0", 44, 0) = 0
setxattr("f0", "trusted.lov", "\xd0\x0b\xd1\x0b\x01\x00\x00\x80\x0f\x00\x00\x00\x00\x00\x0
0\x00\x00\x04\x00\x00\x02\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00", 32, 0) = 0
setxattr("f0", "trusted.lma", "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x02\x00\x0
0\x00\x0f\x00\x00\x00\x00\x00\x00\x00", 24, 0) = 0
open("f0", O_WRONLY|O_CREAT, 0600) = 4
write(4, "XXX\n", 4) = -1 ENODATA (No data available)
# lfs getstripe f0 f0 lmm_stripe_count: 1 lmm_stripe_size: 1048576 lmm_pattern: 80000001 lmm_layout_gen: 0 lmm_stripe_offset: 0 # getfattr -d -m- f0 # file: f0 trusted.link=0s3/HqEQEAAAAsAAAAAAAAAAAAAAAAAAAAABQAAAACAAAABwAAAAEAAAAAZjA= trusted.lma=0sAAAAAAAAAAAABAAAAgAAABcAAAAAAAAA trusted.lov=0s0AvRCwEAAIAXAAAAAAAAAAAEAAACAAAAAAAQAAAAAAA=
The same archive works fine when extracting to an ext4 filesystem.
# cd /tmp # tar -xf /tmp/f0.tar f0 # cat f0 XXX