Getting some puzzling errors doing the following backup procedure on a root filesystem that's on LVM, when using sparse flag:
lvcreate --snapshot --name baksnap --size 3G /dev/vg0/root mount -o ro /dev/vg0/baksnap /var/tmp/snapmnt rsync -izaHx \ --delete --delete-excluded --delete-after \ --partial --inplace --sparse \ --numeric-ids --bwlimit=640k --rsh=ssh \ /var/tmp/snapmnt \ bakhost:/path/to/backups/root/ This is causing the following errors: .d..t...... etc/lvm/archive/ <f+++++++++ etc/lvm/archive/vg0_01748-450988166.vg <f+++++++++ etc/lvm/archive/vg0_01749-1953687750.vg .d..t...... etc/lvm/backup/ <f..t...... etc/lvm/backup/vg0 <f..t...... root/.bash_history <f..t...... etc/lvm/backup/vg0 ERROR: etc/lvm/backup/vg0 failed verification -- update retained. <f..t...... root/.bash_history ERROR: root/.bash_history failed verification -- update retained. rsync error: some files/attrs were not transferred (see previous errors) (code 23) at main.c(1287) [sender=3.2.2pre2] It repeats the above as many times as I run it. Simply removing the "--sparse" flag makes the error go away. This makes no sense to me in the first place, because I'm mounting the snapshot readonly, so how can it change during the copy (presumably this is why it fails verification)? And in the second place, I don't see how sparse flag would affect anything at all. I'm using --sparse --inplace because I have large VM images on this filesystem, and transfers are sometimes interrupted. However these are only very small text files showing the error (and again, they are in a readonly mount...) I'm using Linux kernel 4.17.8 on this system, glibc 2.27, x86_64 arch. I built 3.2.2pre2 with the following flags: --disable-ipv6 --disable-openssl --disable-xxhash --disable-zstd --disable-lz4 Capabilities: 64-bit files, 64-bit inums, 64-bit timestamps, 64-bit long ints, socketpairs, hardlinks, symlinks, no IPv6, atimes, batchfiles, inplace, append, ACLs, xattrs, optional protect-args, iconv, symtimes, prealloc Checksum list: md5 md4 none Compress list: zlibx zlib none Not sure what is the issue here. I was excited to learn about --sparse --inplace support, but it doesn't seem usable in what seems like an ordinary case. any ideas what I could be doing wrong? Thanks. -- Scott -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html